CN115432551A - A hoisting assembly and hoisting method for a steel box girder of a cross-sea bridge - Google Patents

Abstract

The invention discloses a hoisting assembly and a hoisting method for a steel box girder of a cross-sea bridge, wherein two groups of hoisting assemblies are arranged, each group of hoisting assemblies comprises a main hoisting beam body, a rope pulley group and a hoisting part, and the distance between hoisting buckles and the distance between U ribs in a hull structure are correspondingly arranged, so that the influence on the specification of the main hoisting beam body caused by the relative position of webs in the steel box girders with different specifications is avoided, the installation position of transverse partition plates of the hoisting buckles applicable to the steel box girders with different specifications is reached, the applicability of the hoisting assembly is improved, meanwhile, the integral hoisting through a complete steel rope is avoided, the dismounting difficulty is reduced, the stability of the hoisting process is improved, when the hoisting assembly is required to be dismounted, the dismounting can be completed only by operating the hoisting end and the hoisting buckles on the main hoisting beam body, the dismounting difficulty is reduced, and the efficiency of the hoisting operation is improved.

Description

A hoisting component and hoisting method of a steel box girder of a cross-sea bridge

technical field

The present application relates to the technical field of steel box girder hoisting, in particular to a hoisting component and hoisting method of a steel box girder of a cross-sea bridge.

Background technique

The information provided in this section is for the purpose of generally presenting the context of the disclosure. To the extent described in this section, the work of the presently named inventors, and aspects of the description that may not constitute prior art at the time of filing, are neither expressly nor impliedly admitted to be prior art to the present disclosure.

Steel box continuous girders in cross-sea bridges are generally assembled into large sections in the factory, and the large sections are transported to the bridge site as a whole and then installed and connected. After the large sections are manufactured, the loading and unloading operations are difficult and risky. For large-scale construction, in addition to rolling-on-rolling and sliding methods, there is also a method of using large-scale gantry hoisting for large-section loading.

Since the distance between the longitudinal web of the steel box girder is smaller than the minimum distance between the two hooks of the gantry crane, the conventional schemes are: 1. Single hook and single girder scheme, that is, a trolley is used on each of the two gantry cranes, and a whole hoisting beam is connected horizontally under the trolley. The beam is connected with the lifting points arranged on the upper transverse diaphragm of the steel box girder; 2. The double-hook single-girder scheme, each gantry crane uses two trolleys, and the two trolleys are connected to a whole hanging beam, and the steel box girder lifting points are arranged in the mid-belly The upper part of the board is connected with the integral suspension beam.

Judging from the above two schemes, the overall hoisting beam structure is complex and large in size, and the connection operation of the steel box girder before and after hoisting is complicated and difficult, which affects the hoisting efficiency, and the hoisting structure can only meet the needs of a single bridge through customized dimensions, hoisting equipment Poor versatility.

Contents of the invention

Aiming at the defects existing in the prior art, the present application provides a hoisting assembly and hoisting method of a steel box girder of a cross-sea bridge to solve the problem of poor versatility and complicated disassembly and assembly of the hoisting equipment of the steel box girder in the prior art.

Above-mentioned purpose of the present invention is mainly achieved through the following technical solutions:

A hoisting assembly of a steel box girder of a cross-sea bridge, the hoisting assembly is provided with two groups, and each group of the hoisting assembly includes:

The main part of the hanging beam, the top of the main part of the hanging beam is provided with a hoisting end for connecting hoisting equipment;

A sheave set, the sheave set is provided with two groups, and each set of the sheave set includes two runners arranged at intervals, and the runners are rotatably arranged on the main part of the suspension beam;

There are two hanging parts, each of the hanging parts includes a hanging rope and hanging buckles arranged at both ends of the hanging rope, and the middle part of the hanging rope is hung on two of the sheave groups On the running wheel, the lifting buckle is used to be fixed on the diaphragm between two adjacent U ribs of the steel box girder, and the distance between every two adjacent lifting buckles is An integer multiple of the distance between ribs.

Further, the centerlines of different running wheels are parallel to each other.

Further, the hanging rope is in the form of a ring connected end to end, and the two hanging buckles are respectively arranged at two ends of the hanging rope.

Further, the main body of the hanging beam is provided with a rotating shaft, the runner is rotatably sleeved on the rotating shaft, and the outer peripheral surface of the runner is provided with two annular grooves, the hanging The rope hangs in the annular groove.

Further, the hanging buckle includes a hook portion and a fixing rod, the hook portion is provided with an opening, and the fixing rod is movably connected with the hook portion, and can be opened and closed at the opening.

Further, the hanging buckle also includes a mounting seat and two triangular splints, the mounting seat has a lifting hole through which the fixing rod passes, and the two triangular splints are used to clamp on both sides of the diaphragm And it is fixedly connected with the transverse diaphragm through fixing bolts, and the two triangular splints and the mounting seats are used to be clamped on both sides of the top plate and fixedly connected with the top plate through fixing bolts.

Further, the width of the triangular splint is equal to the distance between two adjacent U ribs.

Further, the lifting end is located in the middle of the main body of the hanging beam, and an installation hole is formed through the lifting end.

Based on a same inventive concept, the application also proposes a hoisting method of a steel box girder of a sea-crossing bridge, which includes the following steps:

Take two hoisting components of the steel box girder of the cross-sea bridge as mentioned above, and connect the hoisting ends to the hoisting equipment respectively;

Operate the hoisting equipment to move the main part of the hoisting beam to the upper part of the hoisting position of the steel box girder;

Each of the suspension buckles is fixed on the diaphragm between two adjacent U ribs of the steel box girder;

Operate the hoisting equipment to drive the main part of the hoisting beam to move until the steel box girder moves to the target position.

Further, before the hanging buckle is fixed to the transverse partition, the hoisting device lifts the main body of the hanging beam and keeps the hanging buckle in a natural drooping state, and according to the distance between two adjacent hanging buckles in this state, Operate the hoisting device again until the buckle is correspondingly moved between two adjacent U-ribs, and then fix the buckle to the transverse partition.

Compared with the prior art, the present invention has the advantages of:

The hoisting assembly in the present invention is provided with two groups, each group of hoisting assembly includes the main part of the hanging beam used to connect the hoisting equipment, two groups of sheave sets are arranged on the main part of the hanging beam, and each set of sheave sets includes two The two runners are hung with a sling, and the two ends of the sling are provided with a buckle, which is used to fix the diaphragm between two adjacent U ribs of the steel box girder, and every two The distance between adjacent lifting buckles is an integral multiple of the distance between adjacent U ribs. In the actual hoisting process, by reasonably arranging the relative distance of the runners, the distance between the lifting buckles and the distance between the U ribs in the hull structure can be adjusted. The distance between them is arranged correspondingly, and the lifting points originally connected to the middle web are reasonably arranged on the transverse diaphragm between the U ribs, so as to avoid the relative position of the web in different specifications of the steel box girder from causing the specification of the main part of the hanging beam to be affected. As a result, the lifting buckle can be applied to the installation position of the diaphragm on the steel box girder of different specifications, which improves the applicability of the lifting components. In addition, the middle part of the lifting rope is supported by a rotatable runner, which can further keep the force on each lifting point even, and benefit from the matching relationship between the distance between the hanging buckles and the distance between the U ribs, so that the distance between the running wheel and the hanging buckles The lifting rope is kept vertical to improve the stability of the hoisting process. When it is necessary to disassemble the hoisting components, it only needs to be completed by operating the hoisting end and the hoisting buckle on the main part of the hoisting beam, which reduces the difficulty of disassembly and improves the efficiency of hoisting operations .

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is the front view after installation of the hoisting assembly provided by the embodiment of the present application;

Fig. 2 is a front view of the main part of the suspension beam provided by the embodiment of the present application;

Fig. 3 is a side view of the main part of the suspension beam provided by the embodiment of the present application;

FIG. 4 is a partially enlarged schematic diagram of the mounting seat provided by the embodiment of the present application;

Fig. 5 is a partial cross-sectional view of the mounting seat provided by the embodiment of the present application;

In the figure: 1, the main part of the hanging beam; 11, the hoisting end; 12, the installation hole; 2, the rope wheel group; 21, the runner; 31, the hanging rope; 32, the hanging buckle; 33, the rotating shaft; 41. Hook; 42. Fixed rod; 51. Mounting base; 52. Triangular plywood; 53. Hanging hole; 6. U rib; 7. Transverse partition; 8. Top plate; 9. Hoisting equipment

detailed description

The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. Specific structural and functional details disclosed herein are for purposes of describing example embodiments of the invention only. However, the invention may be embodied in many alternative forms and should not be construed as limited to the embodiments set forth herein.

As shown in Figure 1-5, a hoisting assembly of a steel box girder of a cross-sea bridge, the hoisting assembly is provided with two groups, and each group of the hoisting assembly includes a main part of the hoisting beam, a sheave set and a hoisting part, wherein:

The top of the main part of the hanging beam is provided with a hoisting end for connecting the lifting equipment. The main part of the hanging beam and the lifting equipment are in a detachable connection. The main part of the hanging beam can be driven up or down by the lifting equipment, and The arrangement direction of the gantry crane moves laterally.

Two sets of the sheave sets are provided, and each set of the sheave sets includes two runners arranged at intervals, and the runners are rotatably arranged on the main part of the hanging beam, and each main part of the hanging beam Two sets of sheave sets are arranged on the top, wherein the two running wheels in each set of sheave wheels can rotate independently.

There are two hanging parts, each of which includes a hanging rope and hanging buckles at both ends of the hanging rope, and the middle part of the hanging rope is hung on two runners in one of the sheave sets , that is, each group of sheave groups corresponds to a suspension rope, and two suspension buckles are hung on each suspension rope.

The lifting buckle is used to be fixed on the diaphragm between two adjacent U ribs of the steel box girder, and the distance between every two adjacent lifting buckles is the distance between the adjacent U ribs Integer multiples of , when the buckle is in a natural drooping state, the distance between two buckles is an integer multiple of the distance between two U ribs, since the distances between U ribs in steel box girders of different specifications are equal, the corresponding , the distance between the two slings is such that after one sling is installed between two adjacent U-ribs, the sling at the other end of the sling can also be smoothly installed between two adjacent U-ribs, keeping The suspension rope between the runner and the suspension buckle is in a vertical state, which not only satisfies the requirement that the suspension buckle has a suitable installation position, but also keeps the suspension rope in a vertical and stable hoisting state.

When the hoisting assembly is in operation, two hoisting assemblies corresponding to the main parts of the two hanging beams are arranged at intervals on the upper part of the steel box girder, and four hanging parts are hung on the four sheave groups, including eight lifting buckles in total. The position that can be arranged is more flexible and the coverage is wider. When facing steel box girders of different specifications, different spacing can be set between the main parts of the two hanging beams without adding other structures and without changing the lifting components. On the basis of the above, it is still possible to select a more suitable hoisting position for the hoisting operation of the steel box girder to maintain the stability of the hoisting process of different steel box girders. When facing steel box girders of different specifications, there is no need to consider the steel box girder The position of the middle web is re-customized as a whole hanging beam, which saves cost.

The working principle of this embodiment is: two sets of hoisting assemblies are provided, each set of hoisting assemblies includes a main part of the hanging beam used to connect the hoisting equipment, and two sets of sheave groups are arranged on the main part of the hanging beam, and each set of sheave sets includes Two runners arranged at intervals, hanging ropes are hung on the two runners, the two ends of the hanging ropes are provided with hooks, and the hooks are used to fix on the diaphragm between two adjacent U ribs of the steel box girder, and The distance between every two adjacent buckles is an integer multiple of the distance between adjacent U ribs. In the actual hoisting process, by reasonably arranging the relative distance of the runners, the distance between the buckles and the hull structure can be adjusted. The distance between the U-ribs of the steel box girders is arranged correspondingly, and the lifting points originally connected to the middle web are reasonably arranged on the diaphragm between the U-ribs, so as to avoid the relative position of the webs of steel box girders of different specifications from causing serious damage to the hanging beams. The specifications of the main body are affected, and the hook can be applied to the installation position of the diaphragm on the steel box girder of different specifications, which improves the applicability of the hoisting components. , to reduce the difficulty of disassembly and assembly. In addition, the middle part of the lifting rope is supported by a rotatable runner, which can further keep the force on each lifting point even, and benefit from the matching relationship between the distance between the hanging buckles and the distance between the U ribs, so that the running wheel The sling between the hoisting rope and the buckle is kept vertical to improve the stability of the hoisting process. When it is necessary to disassemble the hoisting components, it only needs to be completed by operating the hoisting end and the hoisting buckle on the main part of the hoisting beam, which reduces the difficulty of disassembly and improves Efficiency of hoisting operations.

Further, on the basis of the above-mentioned embodiment, the centerlines of the different runners are parallel to each other. When the suspension rope moves to balance the stress on different hanging buckles, the suspension rope will be displaced on the runner, and the runner will be moved. It is driven to rotate at a certain angle. During this process, the centerlines of the runners are parallel to each other to maintain the relative positional relationship between the sling and the runners, avoid the deviation of the sling on the runner along the axial direction of the runner, and keep the sling Stability during stress.

Further, on the basis of the above-mentioned embodiments, the sling is ring-shaped end-to-end, the two slings are respectively arranged at both ends of the sling, the middle part of the ring-shaped sling is hung on the runner, and the sling There are two contact positions with the runner, which is convenient for the decomposition of the force, so that the lifting rope can lift heavier steel box girders. Hanging buckle connection points are set on the hanging rope.

Further, on the basis of the above embodiments, the main body of the hanging beam is provided with a rotating shaft, the runner is rotatably sleeved on the rotating shaft, and the outer peripheral surface of the runner is provided with Two annular grooves, the suspension rope is hung in the said annular groove, the movable position of the suspension rope is further restricted by the annular groove, and the axial displacement of the suspension rope along the running wheel is avoided.

Further, on the basis of the above embodiments, the hanging buckle includes a hook and a fixing rod, the hook is provided with an opening, and the fixing rod is movably connected with the hook, and can be opened and closed at the At the above-mentioned opening, the fixing rod can be set to be threadedly connected with the hook, and the rotating operation of the fixing rod can make the opening on the hook open or close, so as to facilitate the disassembly operation of the hanging buckle; it is also possible to connect one end of the fixing rod with the hook The other end is connected with the hook, and the opening on the hook can be kept in different states through the rotation of the fixed rod.

Further, on the basis of the above-mentioned embodiment, the hanging buckle also includes a mounting seat and two triangular splints, the mounting seat has a lifting hole through which the fixing rod passes, and the two triangular splints are used for clamping On both sides of the diaphragm and fixedly connected to the diaphragm through fixing bolts, the two triangular splints and the mounting seat are used to clamp on both sides of the top plate and fixedly connected to the top plate through fixing bolts .

The U-rib in the steel box girder runs through the diaphragm at different positions, and the top of the diaphragm is fixed with a top plate, which is clamped on both sides of the diaphragm by two triangular splints during installation, which can be penetrated and fixedly connected by bolts, and The two triangular splints are located between two adjacent U-ribs, and the installation seat is pressed on the top plate, and is fixedly connected with the triangular splint at the lower part of the top plate through bolts. It is fixedly connected with the top plate, and is also located between two adjacent U ribs, which is convenient for disassembly and assembly without destroying the original structural relationship of the steel box girder, and is not restricted by the installation of the middle web.

Further, on the basis of the above embodiments, the width of the triangular splint is equal to the distance between two adjacent U ribs, which improves the matching degree between the size of the triangular splint and the spacing between the U ribs.

Further, on the basis of the above embodiments, the lifting end is located in the middle of the main body of the hanging beam, the main body of the hanging beam is connected to the lifting equipment through the lifting end, and the lifting end is limited to be located in the middle, so as to maintain the overall shape of the main body of the hanging beam. Balanced left and right, the lifting end is provided with a mounting hole through it, and in the process of connecting the lifting end, a connecting pin can be used to penetrate the mounting hole to achieve fast connection operation with the lifting equipment and improve operating efficiency.

Based on a same inventive concept, the application also proposes a hoisting method of a steel box girder of a sea-crossing bridge, which includes the following steps:

Take two hoisting components of the steel box girder of the cross-sea bridge as mentioned above, and connect the hoisting ends to the hoisting equipment respectively;

Operate the hoisting equipment to move the main part of the hoisting beam to the upper part of the hoisting position of the steel box girder;

Each of the suspension buckles is fixed on the diaphragm between two adjacent U ribs of the steel box girder;

Operate the hoisting equipment to drive the main part of the hoisting beam to move until the steel box girder moves to the target position.

Further, on the basis of the above embodiment, before the hanging buckle is fixed to the diaphragm, the hoisting equipment lifts the main body of the hanging beam and keeps the hanging buckle in a natural drooping state, and according to the two The distance between the adjacent hanging buckles operates the hoisting equipment again until the hanging buckles are correspondingly moved between two adjacent U-ribs, and then the hanging buckles are fixed to the transverse partition.

It should be understood that the terms first, second, etc. are only used for distinguishing descriptions, and cannot be interpreted as indicating or implying relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

It should be understood that the term "and/or" in this article is only an association relationship describing associated objects, indicating that there may be three relationships, for example, A and/or B may mean: A exists alone, B exists alone, and at the same time There are three situations of A and B. The term "/and" in this article describes another associated object relationship, which means that there can be two relationships, for example, A/ and B, which can mean: A exists alone, and A and B exist alone In both cases, in addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be understood that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "vertical", "inner", "outer", etc. is the orientation or positional relationship that the disclosed product is usually placed in use, Or the orientation or positional relationship commonly understood by those skilled in the art is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection or an optional connection. Disassembled connection, or integral connection; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises", "comprises", "comprises", and/or "comprises" when used herein designate the presence of stated features, integers, steps, operations, elements and/or components and does not exclude the existence or addition of one or more other features, quantities, steps, operations, units, components and/or combinations thereof.

In the following description specific details are provided to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that example embodiments may be practiced without these specific details. In other embodiments, well-known processes, structures and techniques may not be shown in unnecessary detail in order not to obscure the example embodiments.

The above are only specific implementation manners of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. A hoisting assembly of a steel box girder of a cross-sea bridge, characterized in that, said hoisting assembly is provided with two groups, and each group of said hoisting assembly includes: The main part of the hanging beam, the top of the main part of the hanging beam is provided with a hoisting end for connecting hoisting equipment; A sheave set, the sheave set is provided with two groups, and each set of the sheave set includes two runners arranged at intervals, and the runners are rotatably arranged on the main part of the suspension beam; There are two hanging parts, each of the hanging parts includes a hanging rope and hanging buckles arranged at both ends of the hanging rope, and the middle part of the hanging rope is hung on two of the sheave groups On the running wheel, the lifting buckle is used to be fixed on the diaphragm between two adjacent U ribs of the steel box girder, and the distance between every two adjacent lifting buckles is An integer multiple of the distance between ribs. 2. The hoisting assembly of the steel box girder of the sea-crossing bridge according to claim 1, wherein the centerlines of different runners are parallel to each other. 3. The hoisting assembly of the steel box girder of the cross-sea bridge according to claim 1, wherein the suspension rope is in the form of an end-to-end ring shape, and the two lifting buckles are respectively arranged at both ends of the suspension rope. 4. The hoisting assembly of the steel box girder of the cross-sea bridge according to claim 3, characterized in that: the main part of the suspension beam is provided with a rotating shaft, and the runner is rotatably sleeved on the rotating shaft, In addition, two annular grooves are arranged on the outer peripheral surface of the runner, and the suspension rope is hung in the annular grooves. 5. The hoisting assembly of the steel box girder of the sea-crossing bridge according to claim 1, wherein the suspension buckle comprises a hook and a fixed rod, the hook is provided with an opening, and the fixed rod and the hook are It is flexibly connected and can be opened and closed at the opening. 6. The hoisting assembly of the steel box girder of the cross-sea bridge according to claim 5, wherein the hoisting buckle also includes a mounting base and two triangular splints, and the mounting base has a lifting hole through which the fixing rod passes The two triangular splints are used to be clamped on both sides of the diaphragm and fixedly connected to the diaphragm by fixing bolts, and the two triangular splints and the mounting seat are used to be clamped on both sides of the top plate. side and fixedly connected with the top plate by fixing bolts. 7. The hoisting assembly of the steel box girder of the sea-crossing bridge according to claim 6, wherein the width of the triangular plywood is equal to the distance between two adjacent U-ribs. 8. The hoisting assembly of the steel box girder of the cross-sea bridge according to claim 1, wherein the hoisting end is located in the middle of the main body of the hoisting beam, and an installation hole is formed through the hoisting end. 9. A hoisting method for a steel box girder of a sea-crossing bridge, characterized in that it comprises the steps of: Get two hoisting components of the steel box girder of the cross-sea bridge as described in any one of claims 1-8, and connect the hoisting end with the hoisting equipment respectively; Operate the hoisting equipment to move the main part of the hoisting beam to the upper part of the hoisting position of the steel box girder; Each of the suspension buckles is fixed on the diaphragm between two adjacent U ribs of the steel box girder; Operate the hoisting equipment to drive the main part of the hoisting beam to move until the steel box girder moves to the target position. 10. The hoisting method of the steel box girder of the cross-sea bridge as claimed in claim 9, characterized in that: before the hook and the diaphragm are fixed, the hoisting equipment lifts the main part of the hanging beam and keeps the buckle in a natural state. drooping state, and operate the hoisting device again according to the distance between two adjacent hanging buckles in this state, until the hanging buckles move correspondingly between two adjacent U-ribs, and then connect the hanging buckles with the The diaphragm is fixed.

Images