CN209778086U - Lifting appliance anti-swing system for gantry crane - Google Patents

Abstract

The utility model relates to a hoist anti-swing system for door machine, this anti-swing system installs on cantilever crane (10) to connect gyration hoist (9), anti-swing system include lift wire rope (1), lift balladeur train (2), permanent tension wire rope (3), elevating system (4), permanent tension mechanism (5), head structure (6), substructure (7) and tensioning pulley (11), wherein elevating system (4) and permanent tension mechanism (5) are installed in substructure (7) and are fixed at the root of cantilever crane (10), tensioning pulley (11) are installed in head structure (6) and are fixed at cantilever crane (10) head. Compared with the prior art, the utility model discloses two sets of wire rope devices, lift wire rope and permanent tension wire rope have creatively been adopted. The constant tension steel wire rope can be lifted at any position within the length range of the arm support along with the lifting appliance, so that the rotary motion of the lifting appliance can be realized, and the accurate positioning of goods can be ensured.

Description

Lifting appliance anti-swing system for gantry crane

Technical Field

The utility model relates to a novel hoist anti-swing system for door machine can be used to the hoist of all cantilever crane types stable.

Background

The jib type portal crane is a main device (figure 5) for carrying out hoisting and installation operations in ports and shipyards, the hoisting of a hoisting tool is realized by four steel wire ropes, as shown in figure 6, the four steel wire ropes 8 are wound on a winding drum through a fixed pulley and a bend pulley, and a rotary hoisting tool 9 is hung below the four steel wire ropes 8.

Because the four hoisting steel wire ropes 8 are basically parallel, when the rotary lifting appliance 9 is lifted, the swing is easily generated under the action of wind load or unbalance load. In order to keep the rotary lifting appliance stable, two auxiliary steel wire ropes are fixed on the lifting appliance during field operation, and the auxiliary steel wire ropes are tensioned manually to stabilize the lifting appliance.

Some gantry cranes use rotating spreaders (fig. 7 and 8) to steer the cargo for storage or loading and unloading on special transport equipment, such as steel plates. The upper frame 91 of the rotary lifting appliance is connected with four lifting steel wire ropes to realize the lifting of goods. The lower hanger 94 is connected to the upper frame 91 through a slewing bearing 93, and is driven to slew by a slewing drive mechanism 92. Because the four hoisting steel cables are basically parallel, when the lower part hanger rotates with goods, the upper frame 91 also rotates together, and the four hoisting steel cables above the upper part are wound together, so that the four hoisting steel cables are mutually abraded to cause the damage of the steel cables. Therefore, the operator must fix two auxiliary cables on the upper frame of the spreader, and when the lower hanger rotates, the two auxiliary cables are used for fixing the upper frame so that the upper frame does not rotate along with the rotation of the lower hanger.

Because the fixed wire rope must be operated through manpower, and operating personnel are located the both sides of lifting by crane the goods, therefore the safety problem is a hidden danger all the time. Furthermore, automated unmanned loading and unloading of port and shipyard facilities is a trend. The unmanned stabilization technique of the spreader becomes a problem that must be solved first.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hoist anti-swing system for door machine in order to overcome the defect that above-mentioned prior art exists. The device can be used for stabilizing the lifting appliance of all the arm frame type cranes.

the technology creatively provides a mechanical anti-swing concept for the lifting appliance, so that unmanned operation of the lifting appliance is possible.

The purpose of the utility model can be realized through the following technical scheme: the anti-swing system is characterized by comprising a lifting steel wire rope, a lifting sliding frame, a constant tension steel wire rope, a lifting mechanism, a constant tension mechanism, a head structure, a lower structure and a tensioning pulley, wherein the lifting mechanism and the constant tension mechanism are arranged on the lower structure and fixed at the root of the arm frame, the tensioning pulley is arranged on the head structure and fixed at the head of the arm frame, the lifting steel wire rope is led out from the lifting mechanism and connected with the tensioning pulley after penetrating through the lifting sliding frame, and the constant tension steel wire rope is led out from the constant tension mechanism and connected with the rotary lifting appliance after penetrating through the lifting sliding frame.

The lifting sliding frame comprises a sliding frame structure, and a guide-out pulley, a carrier roller, an upper cable joint and a lower cable joint which are arranged on the sliding frame structure.

The upper cable joint and the lower cable joint are respectively connected with two ends of a lifting steel wire rope, the lifting steel wire rope is driven by a lifting mechanism, and the lifting sliding frame is drawn to travel along the arm support.

The constant tension steel wire rope is driven by a constant tension mechanism and leaves the arm support through a guide pulley arranged on the lifting sliding frame to be connected with the rotary lifting appliance. Therefore, the leading-out point of the constant-tension steel wire rope can be adjusted along with the lifting height of the rotary lifting appliance, so that the stable anti-swing performance can be ensured.

The sliding frame structure is in a tripod shape, the upper cable joint and the lower cable joint are vertically arranged on two corners on the same side of the tripod, the guide pulley is arranged on a third corner, the carrier roller is arranged on one side of the tripod, and the lifting steel wire rope penetrates through the carrier roller and is connected to the tensioning pulley arranged on the head structure, so that the problem of downward winding caused by a long distance between the lifting mechanism and the tensioning pulley of the lifting steel wire rope is solved.

The lifting mechanism and the constant tension mechanism are driven independently and simultaneously; alternatively, the first and second electrodes may be,

in the process of lifting the goods, the lifting mechanism is not driven, namely the lifting carriage keeps the space position motionless, and the constant tension steel wire rope is driven by the constant tension mechanism to lift along with the rotary lifting appliance so as to ensure the goods to lift.

The constant tension mechanism ensures that the tension of the constant tension steel wire rope is a constant value, and the rotary motion of the goods is realized; when the goods need to be stable, the swinging of the goods is quickly attenuated under the action of the tension difference of the two steel wire ropes; meanwhile, the tension of the steel wire rope is not more than a constant value, so that the lifting appliance, the anti-swing system and the arm support are protected from being damaged.

The anti-swing system is self-integrated, and the head structure and the lower structure of the anti-swing system are respectively fixed on the head and the root of the arm support, wherein the head structure comprises a support and tensioning pulleys arranged at two ends of the support; the lower structure comprises a support and pulleys at two ends of the support.

Compared with the prior art, the utility model has the advantages of it is following:

1. the whole anti-swing system is integrated, is easy to install, and can be applied to not only new cranes but also the reconstruction of the existing cranes.

2. two sets of independent driving mechanisms are adopted. On one hand, the lifting carriage can move along with the lifting of the lifting appliance so as to ensure that the constant-tension steel wire rope leaves a lead-out point of the arm support and approaches the lifting appliance; the constant tension steel wire rope is driven by the constant tension mechanism to ensure a certain tension force, and most of the tension force (horizontal component) of the constant tension steel wire rope is used for stabilizing the lifting appliance instead of lifting cargoes. On the other hand, when the goods are lifted and the anti-shaking system does not work, in order to reduce energy consumption, the lifting sliding frame can be static and is driven by the constant tension mechanism. So that the constant tension steel wire rope can be lifted along with the lifting appliance, and the function of the crane can be realized. And the two operation modes can be switched at will, so that the operation of the crane is simpler and more convenient.

3. The anti-shaking system can be used for preventing the goods from shaking, so that the goods can be quickly aligned; the lifting device can be used for stabilizing the upper frame of the lifting device when the lifting device needs to rotate with goods, so that the lifting steel wire ropes are prevented from being wound together to cause damage.

4. The lifting carriage is provided with a carrier roller for reducing the winding of the lifting steel wire rope under the action of self weight. The anti-swing system can be suitable for arm supports with various lengths.

5. The constant tension mechanism can ensure that the maximum tension of the constant tension steel wire rope is a constant value. When the hanger rotates with the goods, the tension can ensure the stability of the upper frame of the hanger. When the hanger swings with the goods, the tension difference of the two steel wire ropes can quickly attenuate the swing of the hanger. Once the tension of one of the steel wire ropes is larger than a constant value, the steel wire rope can move along with the swing of the lifting appliance so as to protect the safety of the lifting appliance, the anti-swing system and the arm support structure.

Drawings

Fig. 1 is a schematic structural view of a sling anti-swing system of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic view of the head and substructure of FIG. 1;

Fig. 4 is a schematic diagram of the sling anti-swing system of the present invention;

FIG. 5 is a drawing showing the lifting operation of the gantry crane equipped with the sling anti-swing system of the present invention;

FIG. 6 is a winding diagram of a gantry crane lifting system;

Fig. 7 is a schematic structural view of a slewing spreader;

Fig. 8 is a side view of a slewing spreader.

Detailed Description

the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1-3, the anti-swing system of the sling for a gantry crane is installed on an arm frame 10 and connected with a rotary sling 9, and comprises a lifting steel wire rope 1, a lifting carriage 2, a constant tension steel wire rope 3, a lifting mechanism 4, a constant tension mechanism 5, a head structure 6, a lower structure 7 and a tensioning pulley 11, wherein the lifting mechanism 4 and the constant tension mechanism 5 are installed on the lower structure 7 and fixed at the root of the arm frame 10, the tensioning pulley 11 is installed on the head structure 6 and fixed at the head of the arm frame 10, the lifting steel wire rope 1 is led out from the lifting mechanism 4 and connected with the tensioning pulley 11 after passing through the lifting carriage 2, the constant tension steel wire rope 3 is led out from the constant tension mechanism 5 and connected with the rotary sling 9 after passing through the lifting carriage 2, and the rotary sling 9 is connected with the arm frame 10 through a lifting. The swing system is self-integrated, a head structure 6 and a lower structure 7 of the swing system are respectively fixed at the head and the root of an arm support 10, wherein the head structure 6 comprises a support and tensioning pulleys 11 arranged at two ends of the support; the lower structure 7 comprises a bracket and pulleys at two ends of the bracket.

The lifting carriage 2 comprises a carriage structure 25, and a guide-out pulley 24, a carrier roller 22, an upper cable joint 23 and a lower cable joint 21 which are arranged on the carriage structure 25. As shown in fig. 4, the carriage structure 25 is in a tripod shape, the upper cable joint 23 and the lower cable joint 21 are vertically arranged at two corners of the same side of the tripod, the guide pulley 24 is arranged at the third corner, the idler roller 22 is arranged at one side of the tripod, and the lifting steel wire rope 1 passes through the idler roller 22 and is connected to the tension pulley 11 arranged on the head structure 6. The upper cable joint 23 and the lower cable joint 21 are respectively connected with two ends of a lifting steel wire rope 1, the lifting steel wire rope 1 is driven by a lifting mechanism 4, and the lifting carriage 2 is drawn to travel along the arm support 10. The constant tension steel wire rope 3 is driven by a constant tension mechanism 5 and leaves the arm support 10 through a guide pulley 24 arranged on the lifting carriage 2 to be connected with the rotary lifting appliance 9.

The lifting mechanism 4 and the constant tension mechanism 5 are driven independently and simultaneously; or, in the process of lifting the goods, the lifting mechanism 4 is not driven, namely the lifting carriage 2 keeps the space position still, and the constant tension steel wire rope 3 is driven by the constant tension mechanism 5 to lift along with the rotary lifting appliance 9 so as to ensure the goods to be lifted. As shown in fig. 5.

The constant tension mechanism 5 ensures that the tension of the constant tension steel wire rope 3 is a constant value, and realizes the rotary motion of the goods; when the goods need to be stable, the swinging of the goods is quickly attenuated under the action of the tension difference of the two steel wire ropes; meanwhile, the tension of the steel wire rope is not more than a constant value, so that the lifting appliance, the anti-swing system and the arm support are protected from being damaged.

Claims (8)

1. A sling anti-swing system for a gantry crane is arranged on an arm support (10) and is connected with a rotary sling (9), it is characterized in that the anti-swing system comprises a lifting steel wire rope (1), a lifting carriage (2), a constant tension steel wire rope (3), a lifting mechanism (4), a constant tension mechanism (5), a head structure (6), a lower structure (7) and a tensioning pulley (11), wherein the lifting mechanism (4) and the constant tension mechanism (5) are arranged on the lower part structure (7) and fixed at the root part of the arm support (10), the tension pulley (11) is arranged on the head part structure (6) and fixed at the head part of the arm support (10), the lifting steel wire rope (1) is led out from the lifting mechanism (4), passes through the lifting carriage (2) and then is connected with the tensioning pulley (11), the constant tension steel wire rope (3) is led out from the constant tension mechanism (5) and penetrates through the lifting carriage (2) to be connected with the rotary lifting appliance (9).

2. The spreader anti-swing system for gantry cranes according to claim 1, characterized in that the lifting carriage (2) comprises a carriage structure (25), as well as a lead-out pulley (24), a carrier roller (22), an upper cable knot (23) and a lower cable knot (21) arranged on the carriage structure (25).

3. The sling anti-swing system for gantry cranes according to claim 2, characterized in that the upper knuckle (23) and the lower knuckle (21) are connected to two ends of a lifting wire rope (1) respectively, the lifting wire rope (1) is driven by a lifting mechanism (4), and a lifting carriage (2) is pulled to run along the boom (10).

4. the sling anti-swing system for gantry cranes according to claim 2, characterized in that the constant tension wire rope (3) is driven by a constant tension mechanism (5) and leaves the boom (10) to connect with the slewing sling (9) through a lead-out pulley (24) mounted on the lifting carriage (2).

5. A spreader anti-swing system for a gantry crane according to claim 2, wherein the carriage structure (25) is in the shape of a tripod, the upper cable knuckle (23) and the lower cable knuckle (21) are arranged up and down at two corners of the same side of the tripod, the lead-out pulley (24) is arranged at the third corner, the carrier roller (22) is mounted at one side of the tripod, and the lifting wire rope (1) is connected to the tension pulley (11) mounted on the head structure (6) through the carrier roller (22).

6. The sling anti-swing system for gantry cranes according to claim 1, characterized in that the lifting mechanism (4) and the constant tension mechanism (5) are driven independently and simultaneously; alternatively, the first and second electrodes may be,

In the process of lifting the goods, the lifting mechanism (4) is not driven, namely the lifting carriage (2) keeps the spatial position motionless, and the constant tension steel wire rope (3) is driven by the constant tension mechanism (5) to lift along with the rotary lifting appliance (9) so as to ensure the goods to lift.

7. The sling anti-swing system for gantry cranes according to claim 1, wherein the constant tension mechanism (5) ensures that the tension of the constant tension steel wire rope (3) is constant, thus realizing the rotary motion of the cargo.

8. The sling anti-swing system for gantry cranes according to claim 1, characterized in that it is self-contained, with a head structure (6) and a substructure (7) fixed to the head and the root of the boom (10), respectively, wherein the head structure (6) comprises a frame and tensioning pulleys mounted on both ends of the frame; the lower structure (7) comprises a bracket and pulleys at two ends of the bracket.