A shoulder beam for hoisting a main beam component and a main beam component hoisting method

Abstract

The present invention relates to the technical field of bridge engineering, and provides a shoulder pole beam for hoisting a main beam component and a main beam component hoisting method, wherein the shoulder pole beam for hoisting the main beam component comprises a cross beam; a rotating joint, the rotating joint comprises a first connection part and a second connection part, the first connection part can rotate relative to the second connection part, the first connection part is connected to the middle part of the cross beam, and the second connection part is used to connect with the main beam component; a first support, the first support is connected to one end of the cross beam, and the end of the first support away from the cross beam is used to abut the main beam component; a hoisting structure, the hoisting structure is connected to the other end of the cross beam, and the hoisting structure is used to connect with a crane. The present invention can overcome the shortcomings of the prior art that the shoulder pole beam is a large component, the disassembly and assembly process is complicated and difficult, and it is easy to interfere with the middle structure of the bridge, resulting in low hoisting efficiency of the main beam component.

Description

Technical Field

[0001] The invention relates to the technical field of bridge engineering, and in particular to a shoulder beam for hoisting a main beam component and a main beam component hoisting method. Background Art

[0002] When installing the main beam components of existing bridges, cable cranes are often used to lift the main beam components. Cable cranes can be divided into transversely movable cable cranes and fixed cable cranes according to whether their main cables can move along the transverse direction of the bridge. When the transversely movable cable crane lifts the steel beams on the bridge deck without obstruction, the main cables can be moved transversely so that the lifting carriage is located directly above the lifting point of the main beam component, and there is no need to directly lift and install it through a shoulder pole beam device. However, when lifting and obstructing the main beam component, direct lifting is impossible due to the obstruction between the lifting carriage and the lifting point of the main beam component, and the lifting position needs to be changed by setting a shoulder pole beam device for lifting and installation. Fixed cable cranes cannot move transversely, so the lifting of the main beam components needs to be converted by a shoulder pole beam device, and then lifted and installed. The lifting of the bridge deck steel beams needs to be lifted synchronously by the four hooks of the left and right lifting carriages of the cable crane.

[0003] Since the shoulder pole beam is used to change the lifting position of the lifting carriage, the shape and size of the shoulder pole beam need to be customized according to the weight and shape of the main beam component, as well as the specifications of the crane and the left and right movement range, and its versatility is poor; and the shoulder pole beam in the prior art is often arranged along the transverse bridge direction relative to the main beam component, that is, the shoulder pole beam spans the entire main beam component along the transverse bridge direction, and the size of the shoulder pole beam along the transverse bridge direction is greater than or equal to the size of the main beam component along the transverse bridge direction. When the working space is limited, especially when installing the mid-span main beam components on both sides, its transportation and disassembly process are extremely complicated and the installation period is very long; and the shoulder pole beam arranged along the transverse bridge direction is easy to interfere with the middle structure of the bridge or the main beam component. For example, when installing the mid-span main beam component of a mid-span arch bridge, the hanger will block the shoulder pole beam, requiring secondary disassembly, which will further reduce the lifting efficiency of the main beam component. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art that the shoulder pole beam is a large component, the disassembly and assembly process is complicated and difficult, and it is easy to interfere with the middle structure of the bridge, resulting in low efficiency in lifting the main beam component, and to provide a shoulder pole beam for lifting the main beam component and a main beam component lifting method.

[0005] In a first aspect, the present invention provides a shoulder beam for hoisting a main beam component, comprising:

[0006] beam;

[0007] A rotary joint, the rotary joint comprises a first connection part and a second connection part, the first connection part can rotate relative to the second connection part, the first connection part is connected to the middle part of the cross beam, and the second connection part is used to connect to the main beam component;

[0008] A first support, the first support is connected to one end of the cross beam, and an end of the first support away from the cross beam is used to abut against the main beam component;

[0009] The hoisting structure is connected to the other end of the beam and is used to connect with the crane.

[0010] The movable angle of the rotary joint includes but is not limited to less than 360° or greater than or equal to 360°, as long as the bending moment transfer between the first connection part and the second connection part can be prevented; the rotary joint is connected to the middle part of the beam, and can be set exactly at the midpoint of the beam or offset from the midpoint of the beam.

[0011] The specific form of the first support includes but is not limited to a block-shaped, seat-shaped, or column-shaped structure.

[0012] The specific forms of the lifting structure include but are not limited to lifting ears, lifting rings, and lifting hooks.

[0013] When it is necessary to use the shoulder pole beam of the present solution to lift the main beam component, the second connecting part is connected to the predetermined position (lifting point) on the main beam component, so that the crossbeam, the rotating joint, the first support and the lifting structure can form a lever between the crane and the main beam component; when the upward lifting force is applied by the lifting structure, since the middle part of the crossbeam is provided with a rotating joint, the end of the crossbeam with the first support will drop and abut against the main beam component, thereby also generating an upward support reaction force on the crossbeam to balance the bending moment of the lifting force; therefore, in order to balance the force on the crossbeam, a downward support reaction force will be generated at the rotating joint, and its value is equal to the sum of the lifting force and the support reaction force of the support, thereby generating an equal upward reaction force on the main beam component, so that the main beam component can rise upward.

[0014] As can be seen from the above, this scheme realizes the force balance of the shoulder pole beam at a single hanging point through the lever principle, without the need to set the shoulder pole beam along the transverse length of the bridge to connect the hanging points on both sides of the main beam component as in the existing scheme; when lifting the main beam component, multiple shoulder pole beams of this scheme for lifting the main beam component can be dispersedly arranged at various hanging points on both sides of the main beam component, thereby reducing the size of the shoulder pole beam and avoiding interference between the shoulder pole beam and the middle structure of the main beam component or the middle structure of the bridge, thereby reducing the size and cost of the shoulder pole beam and improving the transportation efficiency of the shoulder pole beam, the installation efficiency of the shoulder pole beam and the lifting efficiency of the main beam component.

[0015] Preferably, a second support is also connected to the crossbeam, and the second support is located on a side of the rotary joint away from the first support, and an end of the second support away from the crossbeam is used for abutting against the main beam component.

[0016] The specific form of the second support includes but is not limited to a block-shaped, seat-shaped, or column-shaped structure.

[0017] When the first support is assembled on site or in a workshop, the present solution can use the second support to provide temporary support for the crossbeam, thereby facilitating the alignment of the first support and the crossbeam; and when the rotary joint is disassembled and assembled on site or in a workshop, the present solution also uses the first support and the second support to provide support for the crossbeam, so that the rotary joint is in a stress-free state, thereby making it easier to disassemble and assemble the pin shaft in the rotary joint.

[0018] Preferably, the second support comprises at least two sections, the section closest to the crossbeam is connected to the crossbeam, the section farthest from the crossbeam is used to abut against the main beam component, and the angle between two adjacent sections is adjustable.

[0019] The angle between two adjacent segments can be adjusted in various ways, including but not limited to hinged connection, hinge connection, setting a plurality of installation holes at different angles, etc.

[0020] According to the present solution, the second support includes a plurality of segments, and the angles of two adjacent segments are adjustable, so that the total length of the second support can be changed. For example, if the number of segments is two, when the angle between the two segments reaches 180°, the length of the second support can reach the maximum; when the angle between the two segments gradually decreases, the length of the second support will also gradually decrease; therefore, according to the present solution, when the second support is needed, such as when the first support and the rotating joint are disassembled, the second support can be extended to abut the main beam member; and when the second support is not needed, such as when the first support and the rotating joint are assembled, the second support can be retracted to avoid damage to the second support.

[0021] Preferably, a locking structure is provided between two adjacent segments, and the locking structure is used to lock the angle between the two adjacent segments.

[0022] The locking structure can take various forms, for example, respectively providing sockets on two adjacent segments, and the two sockets can be aligned when the segments are rotated to a specific angle, and inserting a pin therein can lock the angle of the two segments; respectively providing a male buckle and a female buckle on two adjacent segments, and the male buckle and the female buckle can be fastened to each other when the segments are rotated to a specific angle, thereby locking the angle of the two segments.

[0023] This solution can lock the length of the second support by locking the angle between the segments, thereby preventing the second support from being unexpectedly retracted when the second support is needed, or unexpectedly extended when the second support is not needed.

[0024] Preferably, the position of the first support along the length direction of the beam is adjustable, and / or the position of the lifting structure along the length direction of the beam is adjustable.

[0025] The adjustable position of the first support along the length direction of the beam can be achieved through a variety of mechanisms, for example, slide rails, screw rods, cables, travel wheels, cylinders, etc. are set between the first support and the beam; the adjustable position of the lifting structure along the length direction of the beam can also be achieved through a variety of mechanisms, for example, slide rails, screw rods, cables, travel wheels, cylinders, etc.

[0026] This solution can adjust the distance between the first support and the rotating joint, and / or adjust the distance between the lifting structure and the rotating joint. On the one hand, when the specifications of the main beam component do not match the specifications of the crane, resulting in an offset between the lifting point of the main beam component and the lifting position of the crane, the offset can be adapted by adjusting the position of the first support and / or the lifting structure, thereby eliminating the need to design separate shoulder pole beams for different main beam components and crane specifications, which is conducive to the standardization and generalization of shoulder pole beams and reducing the use cost of shoulder pole beams.

[0027] On the other hand, adjusting the position of the first support and / or the lifting structure is actually adjusting their lever arms in the lever action, thereby being able to adjust the reaction force at the first support and the lifting force at the lifting structure to adapt to main beam components of different sizes and weights, as well as cranes of different sizes, further improving the versatility of this solution.

[0028] Preferably, at least two mounting structures are provided on the crossbeam, and the mounting structures are distributed at intervals along the length direction of the crossbeam, and the mounting structures are used to install the first support or lifting structure.

[0029] The specific forms of the mounting structure include but are not limited to through holes or threaded holes for connecting threaded connectors, mortise and tenon structures, locks, and latches.

[0030] In this solution, multiple mounting structures are arranged at intervals along the length direction of the beam. The position of the first support can be adjusted by mounting the first support at mounting structures at different positions; or the position of the lifting structure can be adjusted by mounting the lifting structure at mounting structures at different positions. Compared with the use of movable mechanisms such as slide rails, this solution can ensure the stability of the connection between the first support or the lifting structure and the beam, avoiding unexpected sliding when lifting the main beam component, thereby causing lifting accidents.

[0031] Preferably, a rubber pad is provided at one end of the first support away from the crossbeam.

[0032] On the one hand, this solution can prevent the first support from directly contacting the main beam component when abutting against the main beam component, causing wear on the surface of the main beam component; on the other hand, it can increase the friction coefficient between the first support and the main beam component, thereby preventing the first support from slipping.

[0033] In a second aspect, the present invention provides a main beam component hoisting method, comprising the following steps:

[0034] S1. Install at least two shoulder pole beams for hoisting the main beam components of the present invention on both sides of the main beam component along the transverse direction of the bridge, and the shoulder pole beams for hoisting the main beam component are spaced apart along the longitudinal direction of the bridge;

[0035] S2. Connect the crane to the lifting structure, lift the main beam component and move it to the designated position.

[0036] This scheme adopts a shoulder pole beam of the present invention for lifting the main beam component to lift the main beam component. The shoulder pole beam for lifting the main beam component can be respectively arranged on both sides of the main beam component along the transverse direction of the bridge, without the need to use a shoulder pole beam arranged along the transverse direction of the bridge as in the existing scheme. Therefore, it is possible to avoid interference between the shoulder pole beam and the middle structure of the main beam component or the middle structure of the bridge, thereby improving the installation efficiency of the shoulder pole beam and the lifting efficiency of the main beam component.

[0037] Preferably, the shoulder beams used for hoisting the main beam components are all arranged at the positions where the main beam components have transverse partitions.

[0038] The main beam component has higher strength and rigidity at the part with the cross-part than other parts. Therefore, this scheme connects the shoulder beam used to lift the main beam component to the position of the main beam component with the cross-part, which can avoid damage to the main beam component or deformation of the main beam component caused by excessive lifting force.

[0039] Preferably, the crane is a cable crane.

[0040] This solution uses a cable crane as the crane, which can adapt to construction sites with large spans and high heights.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 1. The present invention provides a shoulder pole beam for hoisting a main beam component. A lever is formed between a crane and the main beam component by a cross beam, a rotating joint, a first support and a hoisting structure, thereby realizing force balance of the shoulder pole beam at a single hoisting point by utilizing the lever principle. Unlike the existing scheme, there is no need to use a shoulder pole beam arranged along the entire length of the transverse bridge. Therefore, the size of the shoulder pole beam can be reduced, and interference between the shoulder pole beam and the middle structure of the main beam component or the middle structure of the bridge can be avoided. This can reduce the size and cost of the shoulder pole beam, and improve the transportation efficiency of the shoulder pole beam, the installation efficiency of the shoulder pole beam and the hoisting efficiency of the main beam component.

[0043] 2. A shoulder pole beam for hoisting main beam components of the present invention can further configure the position of the first support along the length direction of the beam and the position of the hoisting structure along the length direction of the beam to be adjustable, so that when the specifications of the main beam components do not match the specifications of the crane, the positions of the first support and the hoisting structure can be adjusted to adapt to the offset of the lifting point and the lifting position. At the same time, the reaction force at the first support and the lifting force at the hoisting structure can be adjusted to adapt to main beam components of different sizes and weights, as well as cranes of different sizes. There is no need to design separate shoulder pole beams for different main beam components and crane specifications, which is conducive to the standardization and generalization of shoulder pole beams and reduces the use cost of shoulder pole beams.

[0044] 3. The present invention provides a method for hoisting a main beam component. By using a shoulder pole beam for hoisting a main beam component of the present invention to hoist the main beam component, interference between the shoulder pole beam and the middle structure of the main beam component or the middle structure of the bridge can be avoided, thereby improving the installation efficiency of the shoulder pole beam and the hoisting efficiency of the main beam component. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a side view structural schematic diagram of a shoulder beam for hoisting a main beam component of the present invention;

[0046] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of section Ⅰ-Ⅰ;

[0047] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle II-II section;

[0048] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure of section III-III;

[0049] Figure 5 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle IV-IV section;

[0050] Figure 6 This is a partial enlarged structural diagram of a shoulder beam for hoisting a main beam component of the present invention at the second support Figure 1 ;

[0051] Figure 7 This is a partial enlarged structural diagram of a shoulder beam for hoisting a main beam component of the present invention at the second support Figure 2 ;

[0052] Figure 8 It is a side view structural schematic diagram of a state in which a shoulder pole beam for hoisting a main beam component of the present invention is connected to the main beam component;

[0053] Fig. 9This is a working diagram of a main beam component hoisting method of the present invention. Figure 1 ;

[0054] Fig.10 This is a working diagram of a main beam component hoisting method of the present invention. Figure 2 ;

[0055] Fig.11 It is a schematic diagram of the working process of a main beam component hoisting method of the present invention;

[0056] Icons: 1-crossbeam; 2-rotating joint; 21-first connection part; 22-second connection part; 23-pin shaft; 3-first support; 31-rubber pad; 4-lifting structure; 41-installation card plate; 5-second support; 51-section; 52-pin; 6-main beam member; 61-cross partition; 62-lifting point; 63-bridge deck crossbeam; 7-crane; 8-threaded connector; 9-pin. DETAILED DESCRIPTION

[0057] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0058] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0059] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0060] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0061] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0062] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0063] Example 1

[0064] like Figures 1 to 8 As shown, a shoulder pole beam for lifting a main beam component comprises a cross beam 1, a rotating joint 2, a first support 3 and a lifting structure 4; the rotating joint 2 comprises a first connection part 21 and a second connection part 22, the first connection part 21 can rotate relative to the second connection part 22, the first connection part 21 is connected to the middle part of the cross beam 1, and the second connection part 22 is used to connect with the main beam component 6; the first support 3 is connected to one end of the cross beam 1, and the end of the first support 3 away from the cross beam 1 is used to abut against the main beam component 6; the lifting structure 4 is connected to the other end of the cross beam 1, and the lifting structure 4 is used to connect with a crane 7.

[0065] In an optional embodiment, if Figures 1 to 5 As shown, the cross beam 1 and the first support 3 are both steel box components, and the thickness of the steel plate constituting the cross beam 1 and the first support 3 is greater than or equal to 16 mm to ensure the strength and rigidity of the cross beam 1 and the first support 3; the first support 3 is specifically connected to the cross beam 1 as shown in Figure 1 The lower right side shown.

[0066] In an optional embodiment, if Figure 1 As shown, the lifting structure 4 specifically adopts a lifting lug and is connected to the crossbeam 1 as shown in FIG. Figure 1 The upper left side shown.

[0067] In an optional embodiment, if Figure 1 and Figure 3 As shown, the first connection part 21 of the rotary joint 2 includes two left and right side plates, and the second connection part 22 includes a side plate. When connecting the first connection part 21 and the second connection part 22, the second connection part 22 can be clamped by the first connection part 21 to achieve rapid positioning, as well as the limitation of the crossbeam 1 relative to the main beam member 6 along the longitudinal bridge direction; and an arc-shaped limiting clamp is also arranged between the two side plates of the first connection part 21, the bottom of which is an arc-shaped arc surface, and the size matches the top arc surface of the second connection part 22, so as to help the first connection part 21 and the second connection part 22 to be positioned and assembled more quickly; the first connection part 21 and the second connection part 22 are rotatably connected by a pin shaft 23; and the pin shaft 23 and the crossbeam 1 are also connected by a wire rope to prevent the pin shaft 23 from falling and being lost.

[0068] In an optional embodiment, the component of the distance from the centroid of the bottom surface of the first support 3 to the axis of the rotary joint 2 along the length direction of the cross beam 1 should be greater than or equal to the component of the distance from the lifting structure 4 to the axis of the rotary joint 2 along the length direction of the cross beam 1, thereby avoiding the pin 23 of the rotary joint 2 from being subjected to a lifting force that is more than twice that of the lifting structure 4, thereby optimizing the forces between the first connection part 21 and the second connection part 22, between the rotary joint 2 and the main beam member 6, and between the first support 3 and the main beam member 6 to avoid excessive stress.

[0069] In an optional embodiment, a second support 5 is further connected to the cross beam 1 . The second support 5 is located on a side of the rotary joint 2 away from the first support 3 . An end of the second support 5 away from the cross beam 1 is used to abut against the main beam component 6 .

[0070] In an optional embodiment, the second support 5 includes at least two segments 51, the segment 51 closest to the cross beam 1 is connected to the cross beam 1, and the segment 51 farthest from the cross beam 1 is used to abut against the main beam member 6, and the angle between two adjacent segments 51 is adjustable. Figure 6 and Figure 7As shown, this embodiment specifically includes two segments 51, wherein the top of the segment 51 located on the upper side is connected to the bottom surface of the cross beam 1, and the bottom surface of the segment 51 located on the lower side is used to abut against the top surface of the main beam member 6, and the two segments 51 are connected by hinges; Figure 6 As shown in FIG. 1 , when the angle between the two segments 51 is 180°, the length of the second support 5 reaches the maximum and can abut against the top surface of the main beam member 6; Figure 7 As shown, when the angle between the two segments 51 is 0°, the length of the second support 5 reaches the minimum and can be separated from the abutment with the top surface of the main beam member 6.

[0071] In an optional embodiment, a locking structure is further provided between two adjacent segments 51, and the locking structure is used to lock the angle between the two adjacent segments 51. Specifically, Figure 6 As shown, a limit plate is provided at the bottom of the upper segment 51 and the top of the lower segment 51. The limit plate is provided with a plug hole. When the angle between the two segments 51 is 180°, the plug holes on the limit plate can be aligned, and the angle between the two segments 51 can be locked by inserting the latch 52 therein; Figure 7 As shown, a limit plate is provided at the upper part of the upper segment 51 and at the bottom of the lower segment 51 , and a socket is provided on the limit plate. When the angle between the two segments 51 is 0°, the sockets on the limit plate can be aligned, and the angle between the two segments 51 can be locked by inserting the pin 52 therein.

[0072] In an optional embodiment, the position of the first support 3 along the length direction of the beam 1 is adjustable, and / or the position of the hoisting structure 4 along the length direction of the beam 1 is adjustable.

[0073] In an optional embodiment, at least two mounting structures are provided on the crossbeam 1, and the mounting structures are spaced apart along the length direction of the crossbeam 1, and the mounting structures are used to mount the first support 3 or the hanging structure 4. Specifically, Figure 1 As shown, the first support 3 and the lifting structure 4 of this embodiment are both connected to the beam 1 through the threaded connector 8. Therefore, correspondingly, in this embodiment, a plurality of groups of through holes for installing the threaded connector 8 are arranged at intervals at both ends of the beam 1 as mounting structures, and the spacing of each through hole in the mounting structure at both ends of the beam 1 matches the spacing of the through holes on the first support 3 and the spacing of the through holes on the lifting structure 4, respectively, so that by changing the installation positions of the first support 3 and the lifting structure 4, their dimensions along the length direction of the beam 1 can be adjusted; at the same time, it is also convenient to disassemble and replace the beam 1, the first support 3 and the lifting structure 4, which is conducive to changing the lifting capacity by replacing the beam 1, the first support 3 and the lifting structure 4 of different sizes, specifications and strengths, thereby forming a standardized solution for a variety of different lifting weights.

[0074] In the above implementation, more specifically, Figure 1 and Figure 4 As shown, in addition to the threaded connector 8, a bayonet 9 is also provided between the first support 3 and the crossbeam 1; the bayonet 9 is also connected to the through hole of the mounting structure for mounting the first support 3, and the diameter of the bayonet 9 is 2 mm smaller than the diameter of the threaded connector 8. When assembling the first support 3, it can be more easily inserted into the mounting structure than the threaded connector 8, thereby helping the first support 3 to be aligned with the mounting structure on the crossbeam 1 more quickly, thereby increasing the assembly speed of the first support 3.

[0075] In the above embodiment, more specifically, the threaded connector 8 adopts an 8.8-grade ordinary bolt that is not less than M24; correspondingly, the diameter of the threaded hole for installing the threaded connector 8 is not less than 27 mm; the through hole of the mounting structure for installing the lifting structure 4 is at least 40 cm away from the edge of the beam 1, and the spacing between the through holes is preferably between 40 cm and 50 cm; the through hole of the mounting structure for installing the first support 3 is at least 20 cm away from the edge of the beam 1, and the spacing between the through holes is preferably between 30 cm and 40 cm.

[0076] In an optional embodiment, if Figure 1 and Figure 2 As shown, a mounting clamp 41 is also provided on the top surface of one end of the crossbeam 1 for mounting the lifting structure 4; a groove whose shape and size match the lifting structure 4 is provided in the middle of the mounting clamp 41. When assembling the lifting structure 4, the lifting structure 4 is placed in the groove of the mounting clamp 41, which can help the lifting structure 4 to align with the mounting structure on the crossbeam 1 more quickly, thereby improving the assembly speed of the lifting structure 4.

[0077] In an optional embodiment, a strip hole is further provided on the side wall of one end of the beam 1 for installing the lifting structure 4, and the position and spacing of the strip holes match the position and spacing of the through holes for installing the lifting structure 4, thereby facilitating the operator to insert the threaded connector 8 at the corresponding position; the size of the strip hole along the length direction of the beam 1 is preferably between 20cm and 40cm, and the size along the height direction of the beam 1 is preferably between 10cm and 20cm.

[0078] In an optional embodiment, a rubber pad 31 is provided at one end of the first support 3 away from the cross beam 1. The rubber pad 31 is preferably made of a material with high tensile strength, corrosion resistance, good buffering performance and good adhesion, so as to better bond with the bottom of the first support 3 and be used as a compression and shear resistance material.

[0079] In an optional embodiment, the cross beam 1, the first connection portion 21 and the second connection portion 22 of the rotating joint 2, the first support 3, and the hoisting structure 4 should all be able to meet the load-bearing capacity under the current design lifting weight, and should have a safety factor of not less than 4 times the rated lifting weight. The local part where the main beam component 6 contacts the first support 3 and the second connection portion 22 should be subjected to force inspection, and the maximum stress should not exceed the allowable stress value of the material of the main beam component 6.

[0080] In an optional embodiment, the pin 23 of the rotary joint 2 is preferably made of 45# steel, and the remaining components are preferably made of Q235 or Q345 steel;

[0081] In an optional embodiment, welding is used to connect the crossbeam 1 to the first connection portion 21 of the rotating joint 2 and the crossbeam 1 to the second support 5, and the welding is full penetration welding, and the weld height should not be less than the thickness of the parent material.

[0082] Example 2

[0083] like Fig.11 As shown, a main beam component hoisting method comprises the following steps:

[0084] S1, at least two shoulder beams for hoisting the main beam members according to Embodiment 1 are installed on both sides of the main beam member 6 along the transverse direction of the bridge, and the shoulder beams for hoisting the main beam member are distributed at intervals along the longitudinal direction of the bridge;

[0085] S2. Connect the crane 7 to the hoisting structure 4, lift the main beam member 6 and move it to a designated position.

[0086] In an optional implementation, step S1 includes:

[0087] S11, according to the weight of the main beam component 6 and the left and right widths of the crane 7, suitable components are selected from the standardized components such as the cross beam 1, the first support 3, the hoisting structure 4 and other standardized components of various specifications that have been designed, and they are combined into a shoulder pole beam for hoisting the main beam component 6;

[0088] S12, welding the second connection part 22 of the rotary joint 2 at the predetermined hanging point 62 on the main beam member 6, and the axis of the second connection part 22 is parallel to the longitudinal bridge direction; the arrangement of the hanging point 62 relative to the main beam member 6 is as follows: Fig.10 As shown, at least two suspension points 62 are provided on both sides of the main beam member 6 along the transverse direction of the bridge, and the suspension points 62 on one side are distributed at intervals along the longitudinal direction of the bridge; this step is preferably prefabricated in a factory;

[0089] S13, transport the remaining components of the shoulder beam used for hoisting the main beam member to the site, unfold the second support 5 so that the second support 5 can abut against the top surface of the main beam member 6, and insert the latch 52 to lock the length of the second support 5; lift the cross beam 1 by the truck crane so that the mounting structure for connecting the first support 3 on the cross beam 1 is roughly aligned with the first support 3, then insert the bayonet 9 to completely align the first support 3 and the mounting structure, release the hook of the truck crane, and install the threaded connector 8 between the first support 3 and the cross beam 1; lift the hoisting structure 4 by the truck crane, put the hoisting structure 4 into the groove of the mounting clamp 41, and install the threaded connector 8 between the hoisting structure 4 and the cross beam 1;

[0090] S14, hoist the shoulder pole beam for hoisting the main beam member assembled in S13 to the top of the main beam member 6 by means of a car crane, and align the first connection portion 21 and the second connection portion 22 of the rotary joint 2, and release the hook of the car crane; at this time, the first support 3 and the second support 5 jointly support the cross beam 1 on the main beam member 6, and the rotary joint 2 is not subjected to force, so the pin 23 can be installed relatively easily, and the pin 23 is connected to the cross beam 1 by means of a steel wire rope; repeat this step until the shoulder pole beam for hoisting the main beam member is installed at all the lifting points 62;

[0091] Step S2 specifically includes:

[0092] S21, such as Fig. 9 As shown, the lower hook of the crane 7 is connected to the hoisting structure 4 through a wire rope and a shackle, and then each lifting point 62 is simultaneously suspended and lifted, and the reaction force provided by the first support 3 and the pin 23 is balanced to make the main beam component 6 rise, and then the main beam component 6 is moved to the specified position, and the suspension rod is connected to complete the installation of the main beam component 6; during this process, the second support 5 can be retracted so that the second support 5 cannot abut against the top surface of the main beam component 6, and the pin 52 is inserted to lock the length of the second support 5;

[0093] S22, unfold the second support 5 so that the second support 5 can abut against the top surface of the main beam member 6, and insert the pin 52 to lock the length of the second support 5; the crane 7 releases the hook; at this time, the first support 3 and the second support 5 jointly support the crossbeam 1 on the main beam member 6, and the rotating joint 2 is not subjected to force, so the pin 23 can be removed relatively easily, and the part of the shoulder pole beam used for lifting the main beam member except the second connecting part 22 is separated from the main beam member 6; the shoulder pole beam used for lifting the main beam member is lifted back to the lifting position, waiting for the next lifting of the main beam member 6.

[0094] In an optional embodiment, the shoulder beams used to hoist the main beam components are all arranged at the position where the main beam component 6 has the diaphragm 61, such as Fig.10As shown, the four hanging points 62 are all arranged at the position where the main beam component 6 has the cross-partition 61, so that the four second connection parts 22 welded thereon are also located above the cross-partition 61; and correspondingly, when the first support 3 is set, the first support 3 is located above the bridge deck crossbeam 63, so that the load applied to the main beam component 6 by this embodiment acts on the position where the strength and stiffness of the main beam component 6 are greater.

[0095] In an optional embodiment, in step S2, the crane 7 adopts a cable crane; and further, the cable crane adopted in this embodiment includes a cableway that can move along the transverse direction of the bridge, so that the lifting sports car under the cableway can be driven to move along the transverse direction of the bridge, so that the hook under the sports car can be more easily aligned with the lifting structure 4, thereby improving the efficiency of the lifting operation.

[0096] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shoulder beam for hoisting a main beam member, characterized in that: Include: Beam (1); A rotary joint (2), the rotary joint (2) comprising a first connecting portion (21) and a second connecting portion (22), the first connecting portion (21) and the second connecting portion (22) being rotatably connected via a pin (23), the first connecting portion (21) being connected to a middle portion of the crossbeam (1), and the second connecting portion (22) being used to be connected to a main beam component (6); a first support (3), the first support (3) being connected to one end of the crossbeam (1), and an end of the first support (3) away from the crossbeam (1) being used for abutting against the main beam component (6); a second support (5), the second support (5) being connected to the crossbeam (1), the second support (5) being located on a side of the rotary joint (2) away from the first support (3), and an end of the second support (5) away from the crossbeam (1) being used for abutting against the main beam component (6); A lifting structure (4), the lifting structure (4) being connected to the other end of the crossbeam (1), the lifting structure (4) being used to be connected to a crane (7), the lifting structure (4) comprising at least one of a lifting lug, a lifting ring, and a lifting hook.

2. A shoulder beam for hoisting a main beam member according to claim 1, characterized in that: The second support (5) comprises at least two sections (51), the section (51) closest to the crossbeam (1) is connected to the crossbeam (1), and the section (51) farthest from the crossbeam (1) is used to abut against the main beam component (6), and the angle between two adjacent sections (51) is adjustable.

3. A shoulder beam for hoisting a main beam member according to claim 2, characterized in that: A locking structure is also provided between two adjacent segments (51), and the locking structure is used to lock the angle between the two adjacent segments (51); The locking structure comprises sockets respectively arranged on two adjacent segments (51); the two adjacent segments (51) can be relatively rotated to a specific angle so that the two adjacent sockets can be aligned; and the angle between the two adjacent segments (51) can be locked by inserting a pin into the socket; Alternatively, the locking structure comprises a male buckle and a female buckle respectively arranged on two adjacent segments (51), and the male buckle and the female buckle can be fastened to each other when the two adjacent segments (51) are rotated relative to each other to a specific angle, thereby locking the angle between the two adjacent segments (51).

4. A shoulder beam for hoisting a main beam member according to any one of claims 1 to 3, characterized in that: The position of the first support (3) along the length direction of the beam (1) is adjustable, and / or the position of the lifting structure (4) along the length direction of the beam (1) is adjustable.

5. A shoulder beam for hoisting a main beam member according to claim 4, characterized in that: At least two mounting structures are provided on the crossbeam (1), the mounting structures are spaced apart along the length direction of the crossbeam (1), the mounting structures are used to mount the first support (3) or the hanging structure (4), and the mounting structures include at least one of a through hole, a threaded hole, a mortise and tenon structure, a lock buckle, and a latch.

6. A shoulder beam for hoisting a main beam member according to any one of claims 1 to 3, characterized in that: A rubber pad (31) is provided at one end of the first support (3) away from the crossbeam (1).

7. A main beam component hoisting method, characterized in that: The following steps are included: S1. Install at least two shoulder pole beams for hoisting the main beam member as claimed in any one of claims 1 to 6 on both sides of the main beam member (6) along the transverse direction of the bridge, and the shoulder pole beams for hoisting the main beam member on each side are spaced apart along the longitudinal direction of the bridge; S2. Connect the crane (7) to the lifting structure (4), lift the main beam component (6) and move it to a designated position.

8. A main beam component hoisting method according to claim 7, characterized in that: In step S1, the shoulder beams used to hoist the main beam components are all arranged at positions where the main beam components (6) have transverse partitions (61).

9. A main beam component hoisting method according to any one of claims 7 to 8, characterized in that: The crane (7) is a cable crane.

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