Segmental beam lifting appliance suitable for different beam types and lifting point arrangements

Abstract

The utility model provides a segmental beam lifting appliance suitable for different beam types and lifting point arrangements, and relates to the technical field of assembly type bridge construction, the segmental beam lifting appliance comprises a carrying pole beam, a plurality of lifting lugs are arranged at the upper end of the carrying pole beam, a plurality of distribution beams are arranged at the lower end of the carrying pole beam, and the distribution beams are perpendicular to the carrying pole beam; the distribution beam is arranged in a sliding mode in the length direction of the carrying pole beam, and a plurality of suspender preformed holes are formed in the distribution beam. According to the utility model, the construction efficiency can be greatly improved in the segmental beam prefabrication and erection construction.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated bridge construction technology, specifically a segmental beam lifting tool suitable for different beam types and lifting point arrangements. Background Technology

[0002] In recent years, with the continuous development of bridge construction technology, segmental box girder prefabrication and assembly technology has gradually gained widespread recognition both domestically and internationally due to its advantages such as high construction quality, short construction period, civilized construction, and reduced impact on existing traffic. During the prefabrication and assembly of segmental girders, lifting equipment is required from the prefabrication yard for hoisting and transportation to the bridge erecting machine for installation. The approach bridges of the Changtai Yangtze River Bridge consist of upper-level highway, lower-level primary highway, and lower-level railway beams. The cross-sectional dimensions and lifting point positions of these three beam types are different. To avoid repeatedly changing lifting equipment, it is necessary to research a lifting equipment applicable to all three beam types to meet construction needs and improve construction efficiency. How to find a lifting equipment suitable for different beam types and different lifting point positions is the challenge we need to solve. Summary of the Invention

[0003] In view of the above-mentioned prior art, this utility model proposes a segmental beam lifting tool applicable to different beam types and lifting point arrangements.

[0004] This utility model provides a segmental beam lifting device suitable for different beam types and lifting point arrangements, including a spreader beam. The upper end of the spreader beam is provided with several lifting lugs, and the lower end of the spreader beam is provided with several distribution beams. The distribution beams are perpendicular to the spreader beams and can be slidably arranged along the length direction of the spreader beams. The distribution beams are provided with several pre-drilled holes for lifting rods.

[0005] Preferably, the lifting lugs are provided in pairs and arranged symmetrically.

[0006] Preferably, there are four distribution beams, which are designated as the first distribution beam, the second distribution beam, the third distribution beam, and the fourth distribution beam from left to right.

[0007] Preferably, the distribution beam is connected to the segmental beam through a hanger rod and a pre-drilled hole in the hanger rod, and the hanger rod is made of precision-rolled threaded steel bar.

[0008] Preferably, the lifting lug is connected to the crane hook via a shackle and a wire rope.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model proposes a segmental beam lifting tool applicable to different beam types and lifting point arrangements. It has a simple structure and clear force transmission. By adjusting the distribution beam, it can be applied to segmental beams with different beam types and lifting point arrangements. It greatly improves construction efficiency in the prefabrication and erection of segmental beams and has great promotion and utilization value in the later construction of prefabricated segmental beams. Attached Figure Description

[0010] Figure 1 This is an elevation view of the hoisting of a segmental beam for a primary highway in an embodiment of this utility model.

[0011] Figure 2 This is an elevation view of the highway segmental beam hoisting in an embodiment of this utility model.

[0012] Figure 3 This is an elevation view of the lower railway segment beam hoisting in an embodiment of this utility model.

[0013] Figure 4 This is a side view of the hoisting of a segmental beam for a Class I highway in an embodiment of this utility model.

[0014] Figure 5 This is an attached view of the hoisting of a segmental beam for a Class I highway in an embodiment of this utility model.

[0015] In the diagram, 1 is the spreader beam; 2 is the lifting lug; 3 is the first distribution beam; 4 is the second distribution beam; 5 is the third distribution beam; 6 is the fourth distribution beam; 7 is the pre-drilled hole for the lifting rod; 8 is the segmental beam; and 9 is the lifting rod. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] Example: Figure 1-5 The section beam lifting device shown is suitable for different beam types and lifting point arrangements. It includes a spreader beam 1, with two lifting lugs 2 symmetrically arranged at the upper end of the spreader beam 1, and four distribution beams arranged at the lower end of the spreader beam 1, namely the first distribution beam 3, the second distribution beam 4, the third distribution beam 5, and the fourth distribution beam 6 from left to right. All four distribution beams are perpendicular to the spreader beam 1 and can be slidably arranged along the length of the spreader beam 1, and each has several pre-drilled holes 7 for lifting rods.

[0018] In practical application, the transverse bridge spacing of the segmental beam 8 is slidable on the spreader beam 1 via four distribution beams, matching the reserved lifting buckle positions of the segmental beam 8. When the lifting target is the lifting point of the segmental beam 8 for a Class I highway, the first distribution beam 3, the second distribution beam 4, the third distribution beam 5, and the fourth distribution beam 6 all participate in the work. When the lifting target is the lifting point of the segmental beam 4 for a highway or railway, the first distribution beam 3 and the fourth distribution beam 6 participate in the work, while the second distribution beam 4 and the third distribution beam 5 do not participate. The longitudinal bridge lifting points of the segmental beam 8 are matched through the reserved holes 7 on the distribution beams for the lifting rods. After the positions of the reserved holes 7 for the lifting rods are precisely matched, finely rolled threaded steel bars are threaded through the lifting points to serve as lifting rods 9, and pre-tensioning is performed. After the lifting rods 9 are installed, the lifting operation can be carried out. The lifting lugs 2 are connected to the crane hook via shackles and wire ropes. In this embodiment, the force transmission path of the lifting device is as follows: the self-weight of the segment beam 8 is transmitted to the distribution beam through the lifting rod 9, then to the spreader beam 1 through the distribution beam, and finally to the crane hook through the lifting lug 2, shackle, and wire rope.

[0019] Because the cross-sectional structures of segmental beams for highways (both Class I and high-speed) and railways differ, the arrangement of lifting points also differs. The lifting device in this embodiment can achieve both 8-point and 4-point lifting conditions, and the spacing between the lifting points can be adjusted. It is suitable for lifting all three types of segmental beams.

[0020] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent solutions made using the contents of this utility model specification, whether directly or indirectly applied to other related technical fields, are also within the patent protection scope of this utility model.

Claims

1. A segmental beam lifting tool suitable for different beam types and lifting point arrangements, characterized in that, The device includes a carrying beam, with several lifting lugs at the upper end and several distribution beams at the lower end. The distribution beams are perpendicular to the carrying beam and can be slidably arranged along the length of the carrying beam. Several pre-drilled holes for lifting rods are provided on the distribution beams.

2. The segmental beam lifting tool applicable to different beam types and lifting point arrangements as described in claim 1, characterized in that, The lifting lugs are provided in pairs and are arranged symmetrically.

3. The segmental beam lifting device applicable to different beam types and lifting point arrangements as described in claim 1 or 2, characterized in that, The distribution beams are configured as four, from left to right as the first distribution beam, the second distribution beam, the third distribution beam, and the fourth distribution beam.

4. The segmental beam lifting tool as described in claim 1 or 2, applicable to different beam types and lifting point arrangements, characterized in that, The distribution beam is connected to the segmental beam through hangers and pre-drilled holes in the hangers, and the hangers are made of precision-rolled threaded steel bars.

5. The segmental beam lifting tool as described in claim 1 or 2, applicable to different beam types and lifting point arrangements, characterized in that, The lifting lugs are connected to the crane hook via shackles and wire ropes.

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