A steel box girder hoisting device

Abstract

The application relates to a steel box girder hoisting device, which comprises a hanging frame arranged on a crane, a longitudinal adjusting assembly and two longitudinal clamping assemblies arranged on the hanging frame, the two longitudinal clamping assemblies are arranged on the two length direction sides of the hanging frame respectively, the longitudinal clamping assembly comprises a connecting plate slidably connected to the hanging frame, the connecting plate is provided with an insertion plate inserted into the inside of the steel box girder, and the longitudinal adjusting assembly adjusts the spacing between the two connecting plates. The application has the effects of improving the convenience of steel box girder hoisting and reducing the construction period of the bridge.

Claims

1. A hoisting device for steel box girders, comprising a lifting frame (1) mounted on a crane, characterized in that, The hanger (1) is provided with a longitudinal adjustment assembly (3) and two longitudinal clamping assemblies (4). The two longitudinal clamping assemblies (4) are respectively provided on both sides of the hanger (1) along the length direction. The longitudinal clamping assembly (4) includes a connecting plate (41) slidably connected to the hanger (1). The connecting plate (41) is provided with an insert plate (42) that is inserted into the steel box girder (01). The longitudinal adjustment assembly (3) adjusts the distance between the two connecting plates (41). The hanger (1) is provided with transverse clamping assemblies (5) on both sides along the width direction. The transverse clamping assembly (5) includes a component hinged to the hanger (1). The outer surface of the connecting seat (51) is provided with an electric push rod (52) at the end of the connecting seat (51). The output end of the electric push rod (52) is provided with a hook plate (53) that hooks and engages with the edge of the steel box girder (01). Multiple transverse clamping components (5) are provided. Multiple transverse clamping components (5) are evenly distributed at equal intervals along the length direction of the hanger (1). The hanger (1) is provided with a mounting seat (2). The mounting seat (2) is provided with a transverse adjustment component (6). The transverse adjustment component (6) is used to drive the connecting seats (51) located on both sides of the hanger (1) to rotate synchronously in opposite directions.

2. The hoisting device for steel box girders according to claim 1, characterized in that, The bottom end of the hanger (1) is provided with a sliding groove (101). The two connecting plates (41) are slidably connected inside the sliding groove (101). The longitudinal adjustment component (3) includes a bidirectional lead screw (31) rotatably connected inside the sliding groove (101). The two connecting plates (41) are respectively threaded to two sections of the bidirectional lead screw (31) with opposite thread directions. A guide rod (32) and a first motor are fixedly provided on the hanger (1). The ends of the two connecting plates (41) away from the bidirectional lead screw (31) are slidably sleeved on the guide rod (32). The first motor drives the bidirectional lead screw (31) to rotate.

3. The steel box girder hoisting device according to claim 1, characterized in that, The lateral adjustment assembly (6) includes a drive plate (61) slidably connected in the mounting base (2). Each connecting base (51) has a movable block (63) hinged at the end away from the electric push rod (52). The drive plate (61) has a limiting groove (611) that slides with the movable block (63). The limiting groove (611) is parallel to the width direction of the hanger (1). The top of the mounting base (2) is provided with a plurality of drive cylinders (62), and the piston rod of the drive cylinder (62) is provided on the drive plate (61).

4. The steel box girder hoisting device according to claim 3, characterized in that, The mounting base (2) includes a top plate (21) and multiple vertically arranged guide columns (22). The guide columns (22) connect the top plate (21) and the hanger (1). The drive plate (61) is slidably sleeved on the outer surface of the multiple guide columns (22).

5. A hoisting device for steel box girders according to claim 1, characterized in that, Both the hook plate (53) and the insert plate (42) have rubber pads on their fixing surfaces.

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