一种地铁预制件吊装专用起重机
By designing a special crane for hoisting subway precast components, and utilizing a combination of clamps and a traveling mechanism, the problems of swaying and position adjustment during the hoisting of arched precast components were solved, achieving stable hoisting and cost savings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN HENGYUAN HENGSHAN IND CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, arched subway prefabricated components are prone to swaying during hoisting and transportation, and their placement is difficult to adjust, resulting in unstable hoisting.
A special crane for lifting subway precast components was designed. It uses a clamp to adjust the distance between the jaws via a screw motor, and combines a trolley travel mechanism with a trolley travel mechanism to achieve precise position adjustment and stable clamping of the lifting device.
It improves the stability and safety of hoisting precast subway components, reduces swaying, saves production costs, and has a compact structure.
Smart Images
Figure CN224513063U_ABST
Abstract
Claims
1. A subway prefabricated part hoisting special crane, comprising a crane body, a movable crane trolley is equipped on the top end of the crane body, a lifting mechanism is arranged on the top end of the crane trolley, characterized in that: The lifting trolley is equipped with a lifting device for hoisting precast subway components. The device includes a horizontally positioned upper support beam, with two symmetrically arranged pulley blocks fixed to its top. These pulley blocks are connected to the lifting mechanism via wire ropes. Below the lower support beam is a lower support beam parallel to the upper support beam. Two symmetrically arranged connecting rods connect the upper and lower support beams. The upper end of each connecting rod is hinged to the bottom of the upper support beam, and the bottom end is hinged to the top of the lower support beam. The bottom of the lower support beam has several evenly spaced lifting chains, and a clamping mechanism is located in the middle of the bottom of the lower support beam. The fixture for holding precast subway components includes a slide rail fixed to the bottom of a lower support beam. The slide rail is longitudinally positioned at the bottom of the lower support beam and has a groove. Two sliders are slidably connected in the groove, and the two sliders have opposite internal threads. Vertical support plates are fixed to the bottom of both ends of the slide rail, and a lead screw is provided between the two support plates. The two ends of the lead screw are rotatably mounted on the support plates, and the two sliders are threadedly connected to the lead screw. A lead screw motor is fixed to one end of the slide rail, and the power output shaft of the lead screw motor is connected to the lead screw drive. Vertical L-shaped grippers are fixed to the bottom of each slider.
2. A metro precast element hoisting special crane according to claim 1, characterized in that: The cross-section of the groove is convex, and the slider matches the groove.
3. A special-purpose hoist for metro precast element lifting according to claim 2, characterized in that: A pad that matches the subway prefabricated component is fixed on the support surface at the lower end of the gripper.
4. The metro precast element hoisting special crane according to claim 1, characterized in that: The crane body includes two horizontally arranged main beams and two upper beams arranged between the main beams. The two upper beams are fixed to the ends of the main beams. The top of each main beam is fixed with a trolley travel track. The bottom of each upper beam is provided with a crane outrigger that provides support. The bottom of each crane outrigger is provided with a lower beam, on which the trolley travel mechanism is mounted.
5. A special-purpose metro-precast hoisting crane according to claim 4, characterised in that: The trolley traveling mechanism includes rotatably mounted trolley traveling wheels on the lower end beam, a trolley traveling motor fixed on the lower end beam, and the power output shaft of the trolley traveling motor is connected to the trolley traveling wheels via a transmission.
6. A special-purpose metro-precast hoisting crane according to claim 4, characterised in that: The crane trolley includes a horizontally arranged trolley frame, and a trolley traveling mechanism is installed at each of the four corners of the bottom of the trolley frame. The trolley traveling mechanism can move left and right and is mounted on the trolley traveling track at the top of the main beam.
7. A special-purpose metro-precast hoisting crane according to claim 6, characterised in that: The trolley's traveling mechanism includes trolley wheels and a trolley motor. The trolley wheels are rotatably mounted on the trolley frame, and the power output of the trolley motor is connected to the drive of the trolley wheels.
8. The metro precast element hoisting special crane according to claim 1, characterized in that: The lifting mechanism includes two lifting drums arranged coaxially, with a connecting shaft between the two lifting drums. A lifting motor is fixed on the trolley frame behind the lifting drums, and a reducer is provided between the lifting motor and the lifting drums. The power output shaft of the lifting motor is connected to the lifting drums through the reducer.