European style double-beam crane

Abstract

The utility model particularly relates to a European style double-beam crane which comprises a crane body, end beams, a main beam, a track and a frame, a connecting plate is arranged between two trolley frames, two winches are arranged at the top of the connecting plate, steel wire ropes of the winches vertically penetrate through the connecting plate, the bottoms of the steel wire ropes are arranged on pulley seats, and a buffer device is arranged at the bottom of the connecting plate. The bottom of the pulley seat is installed on the lifting appliance, the buffering device comprises a damping buffer, the impact force of the lifting appliance on the connecting plate is reduced, and the safety performance is improved.

Description

Technical Field

[0001] The utility model relates to the field of cranes, in particular to a European double-girder crane. Background Art

[0002] The European double-girder crane is a gantry crane with a trolley traveling mechanism and a lifting mechanism set on the bridge to achieve the lifting and transportation of materials. When the rising of the material stops, it will continue to move upward due to inertia, causing the spreader to collide with the trolley frame. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the utility model provides a European-style double-girder crane.

[0004] The technical solution of the utility model is achieved as follows: a European double-girder crane comprises two end beams arranged at intervals, two main beams arranged at intervals are connected between the end beams, a track is installed on the top of the main beam, a trolley frame travels on the track, a connecting plate is installed between the two trolley frames, two winches are installed on the top of the connecting plate, the steel wire rope of the winch passes vertically through the connecting plate, the bottom of the steel wire rope is installed on the pulley seat, the bottom of the connecting plate is installed with a buffer device, the bottom of the pulley seat is installed on the sling, the buffer device comprises a damping buffer, the fixed end of the damping buffer is fixedly connected to the top of the base plate, and the damping buffer The free end is fixedly connected to the bottom of the connecting plate, and a spring 1 is sleeved on the outside of the free end of the damping buffer, and a moving ring is installed on the outside of the free end of the damping buffer and on the top of the spring 1. Two hinged arms are evenly distributed on the circumference of the moving ring, and the other end of the hinged arm is hinged to the slider. The slider is sleeved on the outside of the slide rod, and the two ends of the slide rod are fixedly connected in the slide groove. The slide groove is a box-shaped structure with a cavity, and the top of the slide groove is an open structure. A spring 2 is sleeved on the outside of the slide rod, and one end of the spring 2 is connected to the slider and one end away from the damping buffer, and the other end of the spring 2 is connected to the inner side of one side wall of the slide groove.

[0005] The sling includes a top plate, the bottom of which is connected to a sling beam through a rotating mechanism. The sling beam is a box-type structure with openings at both ends. Multiple double-headed hydraulic cylinders are fixedly connected to the cavity of the sling beam. The two ends of the double-headed hydraulic cylinders are fixedly connected to a moving beam. The bottom of the moving beam is fixedly connected to two L-shaped clamps set at intervals.

[0006] The rotating mechanism includes a slewing bearing, the top of the inner ring of the slewing bearing is fixedly connected to the bottom of the top plate, the outer ring of the slewing bearing is engaged with a driving gear, the driving gear is installed on the rotating shaft of the drive motor, and the bottom of the outer ring of the slewing bearing is fixedly connected to the spreader beam.

[0007] The technical solution of the present invention has the following positive effects: the present invention has a double-beam structure, and a buffer structure is installed at the bottom of the connecting plate. When the spreader moves upward, the bottom plate is compressed upward, the damping buffer is compressed, the spring 1 is compressed, the articulated arm moves along the slide rod, and the spring 2 is compressed, thereby reducing the impact force of the spreader on the connecting plate and improving safety performance; the spreader drives the moving beam to move through the telescopic double-headed hydraulic cylinder, so that the L-shaped clamping teeth move toward the middle, thereby clamping the wooden pallet for transportation; the rotating mechanism can drive the spreader to rotate, thereby driving the rotation of the goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is the structural front view of the utility model.

[0009] Figure 2 Schematic diagram of the structure of the buffer device.

[0010] Figure 3 Schematic diagram of the connection between the spreader beam and the double-head hydraulic cylinder. DETAILED DESCRIPTION

[0011] like Figure 1-3 As shown, a European double-girder crane comprises two spaced end beams 1, two spaced main beams 2 are connected between the end beams 1, a track 3 is installed on the top of the main beam 2, a trolley 4 travels on the track 3, a connecting plate 5 is installed between the two trolleys 4, two winches 6 are installed on the top of the connecting plate 5, the wire rope 7 of the winch 6 passes through the connecting plate 5 vertically, the bottom of the wire rope 7 is installed on the pulley seat, a buffer device is installed at the bottom of the connecting plate 5, and the bottom of the pulley seat is installed on the sling, the buffer device comprises a damping buffer 8, the fixed end of the damping buffer 8 is fixedly connected to the top of the bottom plate 24, the bottom plate 24 is located between the two main beams 2, the free end of the damping buffer 8 is fixedly connected to the bottom of the connecting plate 5, the outside of the free end of the damping buffer 8 is sheathed with a spring 9, and a moving ring 10 is installed on the outside of the free end of the damping buffer 8 and on the top of the spring 9. Two hinged arms 11 are evenly distributed on the outside of the dynamic ring 10, and the other end of the hinged arm 11 is hinged to the slider 12, and the slider 12 is sleeved on the outside of the slide rod 13, and the two ends of the slide rod 13 are fixedly connected in the slide groove 14. The slide groove 14 is a hollow box-shaped structure, and the top of the slide groove 14 is an open structure. A spring 2 15 is sleeved on the outside of the slide rod 13, and one end of the spring 2 15 is connected to the slider 12 and one end away from the damping buffer 8, and the other end of the spring 2 15 is connected to the inner side of one side wall of the slide groove 14; specifically, the winch 6 starts to drive the wire rope 7 to rise and fall, and the sling follows the rise and fall. When the sling is lifted to the top, it presses against the bottom plate 24, and the bottom plate 24 continues to move upward to compress the damping buffer 8. The hinged arm 11 moves with the slider 12, and the slider 12 moves along the slide rod 13. The spring 2 15 is compressed, thereby reducing the impact force of the sling on the lifting trolley and preventing the lifting trolley from derailing.

[0012] The sling includes a top plate 16, the bottom of which is connected to a sling beam 17 through a rotating mechanism. The sling beam 17 is a box-type structure with openings at both ends. A plurality of double-headed hydraulic cylinders 18 are fixedly connected in the cavity of the sling beam 17. The two ends of the double-headed hydraulic cylinders 18 are fixedly connected to a moving beam 19, and the bottom of the moving beam 19 is fixedly connected to two L-shaped clamps 20 set at intervals. Specifically, this sling is mainly used to lift wooden pallets. When the double-headed hydraulic cylinders 18 are started, the moving beams 19 at both ends are driven to move outward, and the L-shaped clamps 20 connected to the moving beam 19 also move outward, and then move inward, insert the L-shaped clamps 20 into the wooden pallet, clamp it, and then rise with the sling to carry out cargo handling.

[0013] The rotating mechanism includes a slewing bearing 21. The top of the inner ring of the slewing bearing 21 is fixedly connected to the bottom of the top plate 16. The outer ring of the slewing bearing 21 is engaged with a driving gear 22. The driving gear 22 is mounted on the rotating shaft of the driving motor 23. The bottom of the outer ring of the slewing bearing 21 is fixedly connected to the spreader beam 17. Specifically, when the driving motor 23 is started, the driving gear 22 is driven to rotate, and the outer ring of the slewing bearing 21 engaged with the driving gear 22 is driven to rotate, thereby driving the spreader beam 17 and the devices below it to rotate, thereby realizing the rotation of the goods.

Claims

1. A European double-girder crane, comprising two spaced end beams, two spaced main beams connected between the end beams, a track mounted on top of the main beams, a trolley running on the track, a connecting plate mounted between the two trolleys, two winches mounted on top of the connecting plate, the wire ropes of the winches passing vertically through the connecting plate, the bottoms of the wire ropes mounted on pulley seats, characterized in that: A buffer device is installed at the bottom of the connecting plate, and the bottom of the pulley seat is installed on the sling. The buffer device includes a damping buffer, the fixed end of the damping buffer is fixedly connected to the top of the base plate, and the free end of the damping buffer is fixedly connected to the bottom of the connecting plate. The outside of the free end of the damping buffer is covered with a spring 1, and a movable ring is installed on the outside of the free end of the damping buffer and on the top of the spring 1. Two hinged arms are evenly distributed on the circumference of the movable ring, and the other end of the hinged arm is hinged to the slider. The slider is covered on the outside of the slide rod, and the two ends of the slide rod are fixedly connected in the slide groove. The slide groove is a box-type structure with a cavity, and the top of the slide groove is an open structure. The outside of the slide rod is covered with a spring 2, one end of the spring 2 is connected to the slider and one end away from the damping buffer, and the other end of the spring 2 is connected to the inner side of one side wall of the slide groove.

2. A European double-girder crane according to claim 1, characterized in that: The sling includes a top plate, the bottom of which is connected to a sling beam through a rotating mechanism. The sling beam is a box-type structure with openings at both ends. Multiple double-headed hydraulic cylinders are fixedly connected to the cavity of the sling beam. The two ends of the double-headed hydraulic cylinders are fixedly connected to a moving beam. The bottom of the moving beam is fixedly connected to two L-shaped clamps set at intervals.

3. A European double-girder crane according to claim 1, characterized in that: The rotating mechanism includes a slewing bearing, the top of the inner ring of the slewing bearing is fixedly connected to the bottom of the top plate, the outer ring of the slewing bearing is engaged with a driving gear, the driving gear is installed on the rotating shaft of the drive motor, and the bottom of the outer ring of the slewing bearing is fixedly connected to the spreader beam.

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