CN216471828U

CN216471828U - Marine crane

Info

Publication number: CN216471828U
Application number: CN202023298255.0U
Authority: CN
Inventors: 王辉
Original assignee: Worldhoists Tianjin Co ltd
Current assignee: Worldhoists Tianjin Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-05-10
Anticipated expiration: 2030-12-30

Abstract

The utility model provides a marine crane, which comprises: the lifting mechanism comprises a lifting steel wire rope, a lifting motor, a speed reducer and a lifting winding drum, the lifting hook group is provided with a movable pulley, the lifting trolley is provided with a lifting fixed pulley, a traction pulley, a running wheel and a horizontal guide wheel, and the trolley traction mechanism comprises a traction winding drum and a traction steel wire rope; the hoisting mechanism is fixedly connected with the tail part of the crane arm support; one end of a hoisting steel wire rope is fixed on the hoisting drum, and the other end of the hoisting steel wire rope sequentially passes through the guide pulley, the hoisting fixed pulley, the movable pulley and the hoisting fixed pulley and then is connected with the fixed end of the steel wire rope; the guide pulley is fixedly connected with the end part of the crane arm support; the two traction steel wire ropes are wound and released in opposite directions; the crane trolley is suspended on a lower edge wing plate of the crane. The utility model has the following beneficial effects: simple structure, simple to operate satisfy boats and ships complex operating mode user demand.

Description

Marine crane

Technical Field

The utility model relates to the technical field of hoisting equipment, in particular to a marine crane.

Background

At present, most of marine cranes use standard electric hoists as hoisting and trolley running mechanisms, the standard electric hoists are designed according to general working conditions of workshops, the working level of the standard electric hoists can only reach M5 at the highest level, the standard electric hoists can meet the requirements of common factory environments, and when the standard electric hoists are used in special occasions (such as ships), the traditional standard electric hoists cannot meet the use requirements of the working conditions. When the ship runs on the river or sea surface, the crane can shake greatly due to large waves generated on the water surface, so that on one hand, the running mechanism of the crane bears large ramp resistance, the running mechanism of the trolley slips and is difficult to run normally; under this kind of operating mode of on the other hand, the contained angle between hoisting mechanism's reel and the wire rope can be big time spent along with rocking of hull, leads to hoisting mechanism in the course of the work indiscriminate rope, and huge impact load also can be born to whole dolly.

Therefore, the crane capable of meeting the use requirements of the ship under complex working conditions is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a marine crane, which solves the problem that the traditional lifting operation mechanism in the prior art cannot meet the use requirements of special complex working conditions such as ships and the like.

The technical scheme of the utility model is realized as follows:

a marine crane comprising: the lifting mechanism comprises a lifting steel wire rope, a lifting motor, a speed reducer and a lifting winding drum, the lifting hook group is provided with a movable pulley, the lifting trolley is provided with a lifting fixed pulley, a traction pulley, a running wheel and a horizontal guide wheel, and the trolley traction mechanism comprises a traction winding drum and a traction steel wire rope; the hoisting mechanism is fixedly connected with the tail part of the crane arm support; one end of the lifting steel wire rope is fixed on the lifting winding drum, and the other end of the lifting steel wire rope sequentially penetrates through the guide pulley, the lifting fixed pulley, the movable pulley and the lifting fixed pulley and then is connected with the fixed end of the steel wire rope; the guide pulley is fixedly connected with the end part of the crane arm support; the number of the traction steel wire ropes is two, one of the traction steel wire ropes goes out of the upper end of the traction drum and sequentially passes through the guide pulley and one of the traction pulleys, the other traction steel wire rope goes out of the lower end of the traction drum and passes through the other traction pulley, and the winding and releasing directions of the two traction steel wire ropes are opposite; the trolley is suspended on a lower edge wing plate of the crane.

Preferably, the hoisting mechanism is fixedly connected with the tail part of the crane boom through a bolt.

Preferably, the number of the guide pulleys is 2, the number of the lifting fixed pulleys is 3, and the number of the traction pulleys is 2.

Preferably, the fixed end of the steel wire rope is fixedly connected with the crane boom structure.

Preferably, the hoisting mechanism is a hoisting mechanism with a C-shaped structure.

The utility model has the beneficial effects that:

simple structure, simple to operate satisfy boats and ships complex operating mode user demand, reduce hoist routine maintenance work load, improve its operating efficiency and life.

The hoisting mechanism is fixed at the tail part of the relatively-swaying smaller arm support of the crane, so that the crane cannot move along with the trolley, the self weight of the trolley is reduced, the bearing capacity of the structure is optimized, and adverse effects on the hoisting mechanism caused by swaying of a ship can be reduced.

Through setting up dolly drive mechanism, can pull the trolley and come and go the operation along the dolly track, traction force can reach five tons, satisfies the traction force demand when boats and ships slope 10 to overcome the problem that the dolly drive power is not enough because of jolting of boats and ships and cause, avoid taking place the phenomenon of skidding.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the marine crane according to the present invention;

FIG. 2 is a schematic top view of the hoist mechanism of FIG. 1;

fig. 3 is a schematic structural view of a trolley traction mechanism.

In the figure:

1. the lifting mechanism comprises a lifting mechanism 2, a lifting steel wire rope 3, a guide pulley 4, a hook group 5, a steel wire rope fixed end 6, a lifting trolley 7, a lifting fixed pulley 8, a movable pulley 9, a lifting motor 10, a speed reducer 11, a lifting winding drum 12, a traction winding drum 13, a traction steel wire rope 14 and a traction pulley.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As can be seen from the embodiments shown in fig. 1 to 3, the crane for a ship according to the present invention includes: the lifting mechanism 1 comprises a lifting steel wire rope 2, a lifting motor 9, a speed reducer 10 and a lifting winding drum 11, the lifting hook group 4 is provided with a movable pulley 8, the lifting trolley 6 is provided with a lifting fixed pulley 7, a traction pulley 14, a running wheel and a horizontal guide wheel, and the trolley traction mechanism comprises a traction winding drum 12 and a traction steel wire rope 13; the hoisting mechanism 1 is fixedly connected with the tail part of the crane arm support; one end of a hoisting steel wire rope 2 is fixed on a hoisting drum 11, and the other end of the hoisting steel wire rope passes through a guide pulley 3, a hoisting fixed pulley 7, a movable pulley 8 and the hoisting fixed pulley 7 in sequence and then is connected with a steel wire rope fixing end 5; the guide pulley 3 is fixedly connected with the end part of the crane arm support; the number of the traction steel wire ropes 13 is two, one traction steel wire rope 13 is led out from the upper end of the traction drum 12 and sequentially passes through the guide pulley 3 and one traction pulley 14, the other traction steel wire rope 13 is led out from the lower end of the traction drum 12 and passes through the other traction pulley 14, and the winding and releasing directions of the two traction steel wire ropes 13 are opposite; the lifting trolley 6 is suspended on a lower flange plate of the crane.

The hoisting mechanism 1 is fixedly connected with the tail part of the crane arm support through bolts.

The number of the guide pulleys 3 is 2, the number of the lifting fixed pulleys 7 is 3, and the number of the traction pulleys 14 is 2. The steel wire rope fixing end 5 is fixedly connected with a crane boom structure.

The hoisting mechanism 1 is a C-shaped hoisting type hoisting mechanism, and compared with the highest M5 working level of the traditional hoist type hoisting mechanism, the working level of the hoisting mechanism can reach M7.

The hoisting steel wire rope 2 is wound and unwound through the positive and negative rotation of the hoisting drum 11, so that the hoisting and descending of the hook group 4 are controlled.

The guide pulley 3 is used for changing the direction of the steel wire rope, is fixed at the end part of the crane arm support and cannot move along with the movement of the hoisting mechanism.

As shown in fig. 3, when the traction drum 12 rotates, one of the two traction cables 13 is reeved while the other is reeved, and vice versa. The hoisting trolley 6 suspended on the lower flange plate of the crane moves back and forth along the track of the crane by the traction of the hoisting steel wire rope 13.

The traction sheave 14 is mounted on the trolley 6, acts as a travelling sheave, and travels with the trolley 6 along the trolley track under the tension of the traction cable 14.

The guide pulley 3 is fixed on the crane arm support and mainly used for changing the direction of the pulling force of the steel wire rope, and after the traction steel wire rope 13 passes through the guide pulley 3, the direction of the pulling force is changed by 180 degrees.

Because the trolley 6 does not comprise a hoisting mechanism, the self weight of the trolley is only 1/3 of the self weight of the traditional hoisting trolley, and the load of a steel structure of the crane is greatly reduced.

The lifting hook group 4 is a special lifting hook group for preventing seawater corrosion, can bear the water pressure below 30 meters of the seawater plane, and ensures that the lifting hook and the bearing are not corroded.

In conclusion, the crane has the advantages of simple structure and convenience in installation, meets the use requirements of ships under complex working conditions, reduces the daily maintenance workload of the crane, and improves the operation efficiency and the service life of the crane.

Through setting up dolly drive mechanism, can pull trolley 6 and come and go the operation along the dolly track, traction force can reach five tons, satisfies the traction force demand when boats and ships slope 10 to overcome the problem that the dolly drive power is not enough because of jolting of boats and ships and avoid taking place the phenomenon of skidding.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.

Claims

1. A marine crane, comprising: the lifting trolley comprises a lifting mechanism (1), a guide pulley (3), a hook group (4), a steel wire rope fixing end (5), a lifting trolley (6) and a trolley traction mechanism, wherein the lifting mechanism (1) comprises a lifting steel wire rope (2), a lifting motor (9), a speed reducer (10) and a lifting winding drum (11), a movable pulley (8) is arranged on the hook group (4), a lifting fixed pulley (7), a traction pulley (14), a running wheel and a horizontal guide wheel are arranged on the lifting trolley (6), and the trolley traction mechanism comprises a traction winding drum (12) and a traction steel wire rope (13); the hoisting mechanism (1) is fixedly connected with the tail part of the crane arm support; one end of the lifting steel wire rope (2) is fixed on the lifting winding drum (11), and the other end of the lifting steel wire rope sequentially penetrates through the guide pulley (3), the lifting fixed pulley (7), the movable pulley (8) and the lifting fixed pulley (7) and then is connected with the steel wire rope fixing end (5); the guide pulley (3) is fixedly connected with the end part of the crane arm support; the number of the traction steel wire ropes (13) is two, one of the traction steel wire ropes (13) is led out from the upper end of the traction drum (12) and sequentially passes through the guide pulley (3) and one of the traction pulleys (14), the other traction steel wire rope (13) is led out from the lower end of the traction drum (12) and passes through the other traction pulley (14), and the winding and releasing directions of the two traction steel wire ropes (13) are opposite; the hoisting trolley (6) is suspended on a lower flange plate of the crane.

2. Marine crane according to claim 1, characterised in that the hoisting mechanism (1) is fixedly connected to the tail of the crane boom by means of bolts.

3. Marine crane according to claim 1, characterised in that the number of guide pulleys (3) is 2, the number of hoisting sheaves (7) is 3 and the number of traction sheaves (14) is 2.

4. Marine crane according to claim 1, characterised in that the wire rope securing end (5) is fixedly connected to the crane jib structure.

5. A crane for ships according to claim 1, characterized in that the hoisting mechanism (1) is a hoisting mechanism of C-type construction.