Lifting appliance structure of bridge girder erection machine

Abstract

The utility model relates to a lifting appliance structure of a bridge girder erection machine, which comprises a lifting appliance cross beam, a plurality of movable pulley groups arranged at the upper part of the lifting appliance cross beam and a lifting rod assembly arranged at the lower part of the lifting appliance cross beam, connecting bases used for being connected with the suspender assemblies are arranged on the two sides, in the length direction, of the bottom of the suspender cross beam, the connecting bases comprise the first connecting base and the second connecting base which are arranged on the two sides, in the width direction, of the suspender cross beam correspondingly, and the first connecting base is provided with one suspender assembly. And two groups of lifting rod assemblies are symmetrically mounted on the second connecting seat in the width direction of the lifting appliance cross beam. The lifting appliance structure of the bridge girder erection machine is simple in structure, strong in applicability, high in safety, uniform in stress of each lifting point, capable of lifting different types of high-speed rail precast beams, especially suitable for lifting large-tonnage precast beams, and capable of greatly improving the working efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bridge lifting equipment technology, and in particular to a bridge erecting machine lifting equipment structure. Background Technology

[0002] In modern bridge construction, bridge erecting machines are key pieces of equipment, responsible for the hoisting and installation of precast beams. However, the traditional lifting device structure of bridge erecting machines has revealed a series of problems in practical applications, limiting their efficiency and safety.

[0003] First, traditional lifting equipment is highly complex to operate. Frequent adjustments to mechanical components to accommodate precast beams of different specifications not only increase operational difficulty but also extend the construction period. Second, safety is also a significant issue. The lifting equipment used for typical 900t ordinary railway precast beams typically employs a four-point lifting structure. Traditionally designed lifting equipment is not sufficiently stable and is prone to shifting or instability when lifting large or heavy precast beams, increasing construction risks and making it unsuitable for the six-point lifting requirements of current high-speed railway precast beams weighing 1000t and above. Utility Model Content

[0004] The purpose of this utility model is to provide a bridge erecting machine lifting device structure, which is not only simple in structure but also highly applicable.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a bridge erecting machine lifting device structure, including a lifting device crossbeam, a movable pulley group disposed on the upper part of the lifting device crossbeam, and a lifting rod assembly disposed on the lower part of the lifting device crossbeam;

[0006] The top of the lifting beam is provided with multiple sets of movable pulleys spaced apart along its length, and the bottom of the lifting beam is provided with connecting seats on both sides along its length for connecting the lifting rod assembly.

[0007] The connecting seat includes a first connecting seat and a second connecting seat respectively arranged on both sides along the width direction of the lifting beam. The first connecting seat is equipped with a set of lifting rod assemblies, and the second connecting seat is symmetrically equipped with two sets of lifting rod assemblies along the width direction of the lifting beam.

[0008] Furthermore, the boom assembly includes a boom, a nut, and a tray. One end of the boom is fixed to the connecting seat by the nut, and the tray is connected to the other end of the boom to support the precast beam to be hoisted.

[0009] Furthermore, the side of the pallet that contacts the precast beam is configured as an inclined surface or a flat surface.

[0010] Furthermore, the lifting beam has a box-shaped structure.

[0011] Furthermore, the movable pulley block is mounted on the beam of the lifting device via a crossbeam hinge seat. The movable pulley block and the crossbeam hinge seat are connected by a pin. Pin baffles are provided at both ends of the pin, and the pin baffles are fixed to the crossbeam hinge seat by bolts.

[0012] Furthermore, both the first connecting seat and the second connecting seat are connected to the lifting beam via a lifting shaft.

[0013] Furthermore, the first connecting seat is connected inside the spreader beam via a first lifting shaft, and the second connecting seat is connected to the bottom of the spreader beam via a second lifting shaft.

[0014] The beneficial effects of the bridge erecting machine lifting device structure provided by this utility model are as follows:

[0015] Compared with existing technologies, the bridge erecting machine lifting device structure of this utility model features multiple sets of movable pulleys at the top of the lifting device's crossbeam. This ensures uniform force distribution during lifting, reduces local stress concentration, and enhances the system's load-bearing capacity. Each set of movable pulleys shares the lifting force, reducing the load pressure on individual pulley sets, extending the equipment's service life, and reducing the risk of mechanical failure.

[0016] Furthermore, the first connecting seat is equipped with one set of lifting rod assemblies, while the second connecting seat symmetrically installs two sets of lifting rod assemblies. This asymmetrical design ensures lifting stability while providing greater flexibility, making it suitable for precast beams of different sizes and shapes. The first and second connecting seats are respectively positioned on both sides of the width of the lifting beam, forming a robust support structure that enhances the lateral stability of the entire system and effectively prevents offset or tilting. This design is particularly suitable for lifting large or heavy precast beams, significantly improving the system's stability and safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a bridge erecting machine lifting device provided in an embodiment of the present utility model;

[0019] Figure 2 A side view of the bridge erecting machine lifting device structure provided in an embodiment of this utility model;

[0020] Figure 3 for Figure 2Cross-sectional view at point AA;

[0021] Figure 4 This is a front view of the lifting beam provided in an embodiment of the present utility model;

[0022] Figure 5 A top view of the lifting beam provided in an embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the boom assembly provided in an embodiment of the present utility model.

[0024] In the diagram: 1. Lifting beam; 2. Pulley block; 3. Beam hinge; 4. First connecting seat; 5. Second connecting seat; 6. Lifting rod assembly; 61. Lifting rod; 62. Nut; 63. Pallet; 64. Spherical washer; 7. Pin; 71. Pin baffle; 8. Lifting shaft; 81. Lifting shaft baffle. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this embodiment clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this embodiment and are not intended to limit this embodiment.

[0026] Please refer to the following: Figures 1 to 6 The following describes a bridge erecting machine lifting device structure provided in this embodiment. This embodiment includes a lifting device crossbeam 1, a movable pulley block 2 disposed on the upper part of the lifting device crossbeam 1, and a lifting rod assembly 6 disposed on the lower part of the lifting device crossbeam 1.

[0027] The top of the lifting beam 1 is provided with multiple sets of movable pulleys 2 at intervals along its length. The bottom of the lifting beam 1 is provided with connecting seats for connecting the lifting rod assembly 6 on both sides along its length. In addition, the connecting seats include a first connecting seat 4 and a second connecting seat 5 respectively provided on both sides along the width direction of the lifting beam 1. A set of lifting rod assemblies 6 is installed on the first connecting seat 4, and two sets of lifting rod assemblies 6 are symmetrically installed on the second connecting seat 5 along the width direction of the lifting beam 1.

[0028] This embodiment of a bridge erecting machine lifting device structure includes multiple sets of movable pulley blocks 2 installed at the top of the lifting device's crossbeam 1. This ensures uniform force distribution during lifting, reduces local stress concentration, and enhances the system's load-bearing capacity. Each set of movable pulley blocks 2 shares the lifting force, reducing the load pressure on a single movable pulley block 2, extending the equipment's service life, and reducing the risk of mechanical failure.

[0029] Furthermore, the first connecting seat 4 is equipped with one set of lifting rod assemblies 6, while the second connecting seat 5 is symmetrically equipped with two sets of lifting rod assemblies 6. This asymmetrical design provides greater flexibility while ensuring lifting stability, making it suitable for precast beams of different sizes and shapes. The first connecting seat 4 and the second connecting seat 5 are respectively located on both sides of the width direction of the lifting beam 1, forming a stable support structure, enhancing the lateral stability of the entire system, and effectively preventing offset or tilting. This design is particularly suitable for lifting large or heavy precast beams, significantly improving the stability and safety of the system.

[0030] Based on the overall description of the above structure, an exemplary structure of a bridge erecting machine lifting device structure in this embodiment is as follows: Figure 1 , Figure 4 and Figure 5 As shown, two sets of movable pulleys 2 are spaced apart at the top of the lifting beam 1 to keep the lifting beam 1 horizontal. At the same time, lifting rod assemblies 6 are respectively installed at both ends of the bottom of the lifting beam 1 for lifting the precast beam.

[0031] The preferred design for the lifting beam 1 is a box-type structure, which enhances overall rigidity and load-bearing capacity. Compared to traditional open structures, the box-type structure is more stable and can remain undeformed under heavy loads, improving the reliability and safety of the entire lifting system. This design is particularly suitable for heavy lifting tasks, ensuring safety and efficiency during construction.

[0032] Furthermore, in this example, two sets of movable pulley blocks 2 are installed at the top of the lifting beam 1 to hoist the lifting beam 1. It can be understood that multiple sets of movable pulley blocks 2 are spaced apart along the length of the top of the lifting beam 1 to accommodate different length requirements, thus facilitating flexible handling of precast beams of varying lengths. Also, by installing movable pulley blocks 2 on the upper part of the lifting beam 1, the load can be effectively distributed, reducing the pressure on individual components and extending the service life of the equipment.

[0033] Preferably, the movable pulley block 2 is mounted on the lifting beam 1 via a crossbeam hinge seat 3. The movable pulley block 2 and the crossbeam hinge seat 3 are connected by a pin 7, with pin baffles 71 at both ends of the pin 7. The pin baffles 71 are fixed to the crossbeam hinge seat 3 by bolts. This installation method not only ensures the smooth operation of the movable pulley block 2 but also increases the adjustability of the system. In this way, operators can flexibly adjust the position of the movable pulley block 2 according to actual needs to achieve the best lifting effect, while reducing maintenance difficulty.

[0034] The side structure of the lifting device structure, such as Figure 2As shown, connecting seats are respectively provided on both sides of the width direction of the lifting beam 1. In this embodiment, the connecting seat on the rear side of the lifting beam 1 is called the first connecting seat 4, and the connecting seat on the front side of the lifting beam 1 is called the second connecting seat 5. The first connecting seat 4 and the second connecting seat 5 are respectively provided on both sides of the width direction of the lifting beam 1, forming a stable support structure. This layout not only enhances the lateral stability of the entire lifting system, but also effectively prevents deviation or tilting during the lifting process.

[0035] In this embodiment, a set of lifting rod assemblies 6 is installed on the first connecting seat 4, and two sets of lifting rod assemblies 6 are installed on the second connecting seat 5. This ensures that the load borne by the first connecting seat 4 is half that borne by the second connecting seat 5. Moreover, the asymmetrical design can provide greater flexibility while ensuring hoisting stability, adapting to precast beams of different sizes and shapes.

[0036] The first connecting seat 4 and the second connecting seat 5 are both connected to the lifting beam 1 via a lifting shaft 8. Similarly, each end of the lifting shaft 8 is equipped with a lifting shaft baffle 81. The lifting shaft baffle 81 is bolted to the first connecting seat 4, and the lifting shaft baffle 81 is bolted to the second connecting seat 5. This connection method not only enhances the stability of the entire system but also allows the lifting beam 1 to withstand greater lateral forces, avoiding potential displacement or instability during lifting. Through reasonable distribution and design, the reliability and safety of the lifting system under complex working conditions are ensured.

[0037] Furthermore, still refer to Figure 2 and Figure 3 As shown, the first connecting seat 4 is connected to the lifting beam 1 via the first lifting shaft 8, and the second connecting seat 5 is connected to the bottom of the lifting beam 1 via the second lifting shaft 8. This arrangement allows each connecting seat to be flexibly adjusted in position according to actual needs, thereby improving the flexibility and adaptability of the entire lifting system. Especially when lifting large or heavy precast beams, this design can significantly improve the stability and safety of the system, ensuring the smooth completion of the lifting operation.

[0038] In this embodiment, refer to Figure 3 and Figure 6As shown, the preferred structure of the lifting rod assembly 6 includes a lifting rod 61, a nut 62, and a tray 63. One end of the lifting rod 61 is fixed to the connecting seat by the nut 62, and the tray 63 is connected to the other end of the lifting rod 61 to support the precast beam to be lifted. Preferably, a spherical washer 64 is provided between the nut 62 and the lifting rod 61 to increase friction between them and enhance the stability of the connection. This overall design not only simplifies the installation process but also ensures a secure connection between the lifting rod assembly 6 and the precast beam. The design of the tray 63 can be adjusted according to the specific shape of the precast beam to ensure optimal contact and improve the safety and stability of the lifting operation.

[0039] And as a further preferred option, such as Figure 1 As shown, the side of the pallet 63 that contacts the precast beam is designed as a planar structure, such as a sloping or horizontal plane, to form a larger support surface and improve the overall load-bearing capacity of the lifting device structure. The sloping design is suitable for irregularly shaped precast beams, while the horizontal design is suitable for regularly shaped precast beams. This flexible design can better adapt to different precast beams, ensuring the stability and safety of the precast beams during lifting and reducing the risk of displacement or slippage.

[0040] In this embodiment, a bridge erecting machine lifting device structure is used by first removing the tray 63 from the lifting rod 61, inserting the lifting rod 61 into the insertion hole on the precast beam to be connected, and then pushing it out. Next, the tray 63 is installed on the lifting rod 61 and pressed against the precast beam again to ensure the stability of the precast beam. After installation, the lifting device structure transports the precast beam to the designated location for assembly.

[0041] During operation, the lifting rod assembly 6 hooks onto the precast concrete beam of the high-speed railway, and the bridge erecting machine drives the pulley block 2 to move the lifting beam 1 up or down. It is not only simple in structure, but also highly applicable and safe. It can lift 900t four-point lifting beams and 1000t six-point lifting beams of the high-speed railway, which greatly improves work efficiency.

[0042] The bridge erecting machine's lifting device structure in this embodiment significantly improves the system's adaptability, load distribution capability, ease of operation, and applicability under complex working conditions by optimizing the design of the lifting device's crossbeam, the arrangement of the movable pulley block 2, and the configuration of the connecting seats. These improvements not only enhance construction efficiency and safety but also provide an efficient, safe, and flexible solution for modern bridge construction, ensuring the smooth progress of projects. This design enables the lifting device system to provide reliable lifting support in various complex construction environments, greatly promoting technological advancements in bridge construction.

[0043] The above description is only a preferred embodiment of this embodiment and is not intended to limit this embodiment. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this embodiment should be included within the protection scope of this embodiment.

Claims

1. A bridge girder launching machine spreader structure, characterized by, The crane beam (1), the movable pulley block (2) arranged on the upper part of the crane beam (1), and the boom assembly (6) arranged on the lower part of the crane beam (1); A plurality of movable pulley blocks (2) are arranged on the top of the crane beam (1) along the length direction, and a connecting seat for connecting the boom assembly (6) is arranged on the bottom of the crane beam (1) along the two sides of the length direction; The connecting seat includes a first connecting seat (4) and a second connecting seat (5) arranged on the two sides along the width direction of the crane beam (1), a group of boom assemblies (6) are installed on the first connecting seat (4), and two groups of boom assemblies (6) are symmetrically installed on the second connecting seat (5) along the width direction of the crane beam (1).

2. The crane structure of the bridge erecting machine according to claim 1, wherein The boom assembly (6) includes a boom (61), a nut (62), and a tray (63), one end of the boom (61) is fixed on the connecting seat through the nut (62), and the tray (63) is connected to the other end of the boom (61) and used for supporting the precast beam to be hoisted.

3. The crane structure of the bridge erecting machine according to claim 2, wherein The side of the tray (63) in contact with the precast beam is arranged as an inclined plane or a flat surface.

4. The crane structure of the bridge erecting machine according to claim 1, wherein The crane beam (1) is a box-shaped structure.

5. The crane structure of the bridge erecting machine according to claim 1, wherein The movable pulley block (2) is installed on the crane beam (1) through a beam hinge seat (3), the movable pulley block (2) and the beam hinge seat (3) are connected through a pin shaft (7), the two ends of the pin shaft (7) are respectively provided with pin shaft baffle plates (71), and the pin shaft baffle plates (71) are fixed on the beam hinge seat (3) through bolts.

6. The crane structure of the bridge erecting machine according to claim 1, wherein The first connecting seat (4) and the second connecting seat (5) are connected to the crane beam (1) through a hoisting shaft (8).

7. The crane structure of the bridge erecting machine according to claim 6, wherein The first connecting seat (4) is connected to the crane beam (1) through a first hoisting shaft (8), and the second connecting seat (5) is connected to the bottom of the crane beam (1) through a second hoisting shaft (8).

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