一种自适应轨道的变跨式门式起重机
By designing an adaptive track variable-span gantry crane, the problem of inconvenient movement of existing equipment between bridge formwork and segmental bridges has been solved, achieving stable movement under different track pitches and height differences, thus improving construction efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN HUAYAN CRANE CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing lifting equipment is not convenient for moving precast steel cages back and forth between bridge segments and bridge formwork when moving them along the length of the bridge formwork, resulting in low construction efficiency.
An adaptive track variable span gantry crane was designed, which adopts a horizontally set main beam and detachable outrigger structure, combined with electric hoist and trolley traveling mechanism. By laying suitable traveling tracks on bridge formwork and segmental bridges, the track can be variable span and adaptive movement can be achieved. The cooperation of traveling wheels and guide wheels can ensure stable movement of the equipment under different track gauges and height differences.
It enables gantry cranes to move flexibly between bridge formwork and segmental bridges, adapting to different track pitches and height differences, improving construction efficiency and stability, and is suitable for the construction needs of on-site cast-in-place bridges.
Smart Images
Figure CN224513044U_ABST
Abstract
Claims
1. An adaptive track variable span gantry crane, comprising a horizontally arranged main beam, a leg structure is arranged at both ends of the main beam, and an electric hoist is slidingly connected on the main beam, characterized in that: The bottom of each support leg structure is equipped with a horizontally arranged lower crossbeam. The lower crossbeam is perpendicular to the main beam in the horizontal direction, and horizontally distributed traveling beams are installed at the four corners of the bottom surface of the lower crossbeam. Each traveling beam is equipped with a trolley traveling mechanism. The traveling beam located inside the lower crossbeam is the first traveling beam, and the traveling beam located outside the lower crossbeam is the second traveling beam. Both the second traveling beam and the lower crossbeam are detachably and fixedly connected to vertically distributed support columns.
2. A self-adapting span-shifting gantry crane according to claim 1, characterized in that: The trolley traveling mechanism includes traveling wheels with flanges that are rotatably connected to the traveling beam. The axial lines of the traveling wheels are horizontally distributed. The first traveling beam is rotatably connected to the lower crossbeam through a slewing bearing, and the second traveling beam is also rotatably connected to the support column through a slewing bearing.
3. A portal crane with variable span and self-adapting rails according to claim 1 or 2, characterized in that: One set of support legs is the left support leg structure, and the other set of support legs is the right support leg structure. The top of the right support leg structure is slidably connected to the main beam.
4. A self-adapting track-changing gantry crane according to claim 3, characterized in that: The top of the right support leg structure is equipped with two rectangular frames that are arranged opposite each other and fitted onto the main beam. Each of the four corners of the two rectangular frames is equipped with a connecting beam that is parallel to the main beam. Both ends of the connecting beam are rotatably connected to rollers that are parallel to the main beam in the direction of travel. The rollers are connected to the main beam by rolling through guide rails installed on the main beam.
5. A variable-span gantry crane with adaptive track according to claim 2, characterized in that: Each set of trolley traveling mechanisms includes two traveling wheels, which are arranged opposite each other at both ends of the traveling beam. One of the traveling wheels is connected to a traveling motor mounted on the traveling beam.
6. A self-adapting track-changing gantry crane according to claim 5, characterized in that: Each traveling beam is equipped with guide wheels at its four corners, and the axial lines of the guide wheels are all vertically distributed.
7. A self-adapting track-changing gantry crane according to claim 1, characterized in that: The top four corners of the lower crossbeam are detachably and fixedly connected to the leg structure, and vertically distributed height adjustment components are detachably and fixedly connected to the top four corners of one set of lower crossbeams and the leg structure. A level is installed on the main beam.
8. A self-adapting span-shifting gantry crane according to claim 1, characterized in that: Polyurethane buffers are installed at both ends of each traveling beam.