CN1086358C - Swing-proof device for crane slings - Google Patents

Abstract

The invention relates to an anti-swing device of a crane spreader. It includes: motor, brake, reducer, drum, fixed pulley, guide wheel, movable pulley connected by wire rope winding, balance arm, and spreader beam. The drum is two sets of double drums, fixed pulley, guide wheel There are four sets arranged on both sides of the drum, four sets of movable pulleys, symmetrically arranged on the spreader beam, and two balance arms, symmetrically arranged on both sides of the spreader beam, and located between the movable pulleys. The invention not only has the advantages of economy and practicability, but also has good anti-swing effect.

Description

Anti-swing device for crane spreader

The invention belongs to crane transportation machinery, and in particular relates to a hoisting mechanism of a crane, a hoisting sling and a wire rope cross winding method.

The following two devices are commonly used for the anti-swing mode of the spreaders of existing cranes (including bridge or gantry cranes): rigid guide rods and anti-sway devices for container spreaders. Among them, the rigid guide rod type anti-swing device is to forcibly connect the hoisting sling and the carrying trolley through the rigid guide frame. The reciprocating motion of the rigid guide frame requires a larger space on the rail, and the height of the factory building should be high, which increases the cost of the factory building and equipment itself, and the economy is poor. The anti-sway device of the container spreader is a separate anti-sway mechanism. Its working principle is: there is an angle between the symmetrical anti-sway ropes. When the spreader swings to one side, the tension of the anti-sway rope on the other side will increase. , and then through the action of the torque motor (or friction clutch or hydraulic cylinder), this tension becomes the braking force to prevent shaking. This anti-sway way is because the included angle between the anti-sway ropes is small, and the anti-swing effect is not ideal, and a set of independent mechanism will be added, so that the overall size of the trolley is increased, and the economy is relatively poor.

The purpose of the present invention is to overcome the disadvantages of the prior art and provide an anti-swing device for a crane spreader. It not only has the advantages of being economical and practical, but also has a good anti-swing effect.

The purpose of the present invention is achieved through the following technical solutions. An anti-swing device for a crane spreader, comprising: a motor installed on a frame, a brake, a reducer, and a reel driven by it; , the movable pulley and the balance arm connected with the fixed pulley and the guide wheel through the wire rope, and the spreader beam connected with the movable pulley and the balance arm. The groups are respectively arranged on both sides of the reel, and the positions of each group of fixed pulleys and guide wheels can be parallel or perpendicular to each other. There are four sets of movable pulleys, which can be symmetrically arranged on the spreader beam respectively, or can be arranged on both sides of the spreader beam collectively. It can also be dispersedly arranged on the four corners of the spreader beam. There are two balance arms with locking devices, which are symmetrically arranged on both sides of the spreader beam and located between the movable pulleys. The balance arms can also be arranged in the same direction or perpendicular to the pulley axis. In order to prevent the swing of the crane spreader, the winding connection method of the wire rope is: one wire rope starts from the left (or right) A end of the drum, passes through the movable pulley, fixed pulley, and B-C-D-E-F-G-H-I in the guide wheel, and ends at one end of the balance arm Take in the rope, and the other one starts from the right (or left) a end of the reel, passes through the b-c-d-e-f-g-h-i in the movable pulley, the fixed pulley, and the guide wheel, and then reaches the other end of the balance arm to draw the rope.

Advantages and effects of the present invention: Since two sets of double-connected reels are used, and the fixed pulley and the guide pulley of the upper pulley device are respectively arranged on both sides of the reel, the movable pulleys of the lower pulley device can be arranged in a centralized or decentralized manner, which can be conveniently realized The cross-winding of steel wire ropes, and through the cross-winding of steel wire ropes, the angle between the steel wire ropes is increased, so as to achieve the anti-swing effect of the spreader, shorten the time for the spreader to lift objects at fixed points, and greatly improve the productivity of the crane. Due to this arrangement, the stress is uniform, the section of the trolley frame can be reduced, and the cost of the crane is reduced. Since the anti-swing effect is realized by winding the steel wire rope itself, compared with the prior art, a set of anti-sway mechanism is reduced, so that the overall size of the trolley is reduced. Compared with the rigid guide rod structure, it reduces a set of rigid guide frame devices, which can greatly save the materials used in the equipment itself and the workshop space, and is economical. In a word, the present invention has the advantages of being economical and practical, and has better anti-swing effect. It is a new type of anti-swing device for crane spreaders. It can be widely used in bridge and gantry cranes, especially suitable for metallurgical cranes that require high efficiency for positioning and lifting. It can meet the requirements of efficient operation of production lines. need.

Description of drawings:

Fig. 1 is a front view of an anti-swing device of a crane spreader.

Fig. 2 is a left side view of Fig. 1 .

FIG. 3 is a top view of FIG. 1 .

Fig. 4 is a schematic structural diagram of the hoisting spreader with the lower pulley devices distributed and the balance buttocks in the same direction as the pulley axis.

Fig. 5 is a schematic structural diagram of the hoisting spreader with lower pulley devices arranged collectively.

Fig. 6 is a schematic structural diagram of the hoisting spreader with the lower pulley devices distributed and the balance arm perpendicular to the pulley axis.

Fig. 7 is a winding diagram of the wire rope of the hoisting mechanism in which the lower pulley device is distributed and the balance arm is in the same direction as the pulley axis, and the guide wheel is perpendicular to the fixed pulley. Winding diagram of silk rope.

Fig. 9 is a winding diagram of the wire rope of the hoisting mechanism in which the lower pulley device is distributed and the balance hip is perpendicular to the pulley axis, and the guide wheel is parallel to the fixed pulley.

Below in conjunction with accompanying drawing, the present invention is described in further detail by embodiment:

As shown in Fig. 1, Fig. 2 and Fig. 3, an anti-swing device of a crane spreader includes: a motor 7 installed on a vehicle frame 1, a brake 5, a reducer 4 and a reel 6 driven by it, through The steel wire rope 8 is wound and connected with the reel 6 and is installed on the fixed pulley 2 and the guide wheel 3 on the vehicle frame, the movable pulley 9 and the balance arm 10 are wound and connected with the fixed pulley and the guide pulley through the wire rope, and the crane connected with the movable pulley and the balance arm It has a beam 12, and its reel 6 is two sets of double-connected reels, and its fixed pulley 2 and guide wheel 3 have four sets respectively arranged on both sides of the reel, and the positions of each set of fixed pulley and guide pulley can be parallel to each other or mutually Vertical, this arrangement not only reduces the cross-sectional size of the vehicle frame 1, but also facilitates the cross-winding of the wire ropes.

As shown in Fig. 4, Fig. 5 and Fig. 6, there are four sets of movable pulleys 9, which can be distributed symmetrically on the four corners of the spreader beam 12, and can also be concentrated on both sides of the spreader beam 12. Distributed on the four corners of the spreader beam 12. There are two balance arms 10, on which there is a locking device 11, which is used to adjust the length of the wire rope. The balance arms are symmetrically arranged on both sides of the spreader beam 12, and are located between the movable pulleys. The balance arms 10 can be aligned with the pulley axis Or arranged perpendicular to the axis of the pulley.

As shown in Figure 7, Figure 8, and Figure 9, in order to prevent the swing of the crane spreader, the winding connection method of the wire rope is: one wire starts from the left (or right) A end of the drum 6, passes through the movable pulley 9, fixed After the B-C-D-E-F-G-H-I in the pulley 2 and the guide wheel 3, go to one end of the balance arm 10 to draw the rope, and the other starts from the 6 right (or left) a end of the reel, and passes through the movable pulley 9, the fixed pulley 2, and the guide wheel 3 After b-c-d-e-f-g-h-i in, go to the other end of the balance arm 10 to draw the rope.

Claims (7)

1, a kind of antiswing device of crane hanger, comprise: be installed in the motor (7) on the vehicle frame (1), drg (5), reductor (4) and by the reel (6) of its transmission, be intertwined and connected and be installed in fixed pulley (2) on the vehicle frame by steel rope (8) and reel, track adjusting wheel (3), by steel rope and fixed pulley, the movable pulley that track adjusting wheel is intertwined and connected (9), equilibrium arm (10), and and movable pulley, equilibrium arm bonded assembly suspender beam (12), it is characterized in that described reel (6) is two cover double crosslinking drums, its fixed pulley (2), track adjusting wheel (3) has four groups of both sides that are arranged in reel respectively, described movable pulley (9) has four groups to be arranged in respectively symmetrically on the suspender beam (12), described equilibrium arm (10) has two, be arranged in the both sides of suspender beam (12) symmetrically, and between movable pulley.

2, according to the antiswing device of the described a kind of crane hanger of claim 1, the method of being intertwined and connected that it is characterized in that described steel rope is: the Left-wing Federation from reel (6) (or right connection) A end, behind the B-C-D-E-F-G-H-I in movable pulley (9), fixed pulley (2), the track adjusting wheel (3), end to equilibrium arm (10) is received rope, another root is from right side connection (or Left-wing Federation) a end of reel (6), through movable pulley (9), fixed pulley (2), track adjusting wheel (3) in b-c-d-e-f-g-h-i after, receive rope to the other end of equilibrium arm (10).

3,, it is characterized in that described equilibrium arm (10) is provided with blocking device (11) according to the antiswing device of the described a kind of crane hanger of claim 1.

4,, it is characterized in that the position of described every group of fixed pulley and track adjusting wheel can be parallel to each other or orthogonal according to the antiswing device of the described a kind of crane hanger of claim 1.

5,, it is characterized in that described equilibrium arm can be in the same way in the pulley axis or perpendicular to the pulley axis arranged according to the antiswing device of the described a kind of crane hanger of claim 1.

6, according to the antiswing device of the described a kind of crane hanger of claim 1, it is characterized in that described four groups of movable pulleys (9) but dispersed placement on four jiaos of suspender beam (12).

7, according to the antiswing device of the described a kind of crane hanger of claim 1, it is characterized in that described four groups of movable pulleys (9) but centralized arrangement in the both sides of suspender beam (12).

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