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CN-224212319-U - Marine crane with pulley abrasion reduction structure

CN224212319UCN 224212319 UCN224212319 UCN 224212319UCN-224212319-U

Abstract

The utility model discloses a marine crane with a pulley abrasion reducing structure, which comprises a crane body for hoisting and transferring objects, wherein a fixed pulley block for guiding a steel wire rope reel Yang Guocheng is arranged on the crane body, an anti-falling rope assembly for limiting the steel wire rope in a certain direction and giving an early warning is arranged on the fixed pulley block, a pulley body is arranged on the fixed pulley block, and an anti-abrasion assembly for buffering the pulley body in a certain direction and preventing the pulley body from deviating in a certain direction is arranged on the fixed pulley block. The utility model not only effectively avoids the abnormal abrasion of the pulley wheel body and the steel wire rope caused by the deviation of the pulley wheel body, prolongs the service life of the steel wire rope and the pulley wheel body, but also effectively avoids the safety accident caused by the rope release of the steel wire rope from the pulley wheel body, and improves the safety.

Inventors

  • XU SHENG
  • SUN RUIRUI
  • CHEN YIFENG
  • QIN QI

Assignees

  • 江苏欧超重工科技有限公司

Dates

Publication Date
20260508
Application Date
20250512

Claims (6)

  1. 1. The marine crane with the pulley abrasion reducing structure comprises a crane body (100) for hoisting and transporting objects, and is characterized in that a fixed pulley block (110) for guiding a steel wire rope reel Yang Guocheng is arranged on the crane body (100), an anti-falling rope assembly (112) for limiting the steel wire rope in a certain direction and giving an early warning is arranged on the fixed pulley block (110), a pulley body (113) is arranged on the fixed pulley block (110), and an anti-abrasion assembly (114) for buffering the pulley body (113) in a certain direction and preventing the pulley body (113) from deviating in a certain direction is arranged on the fixed pulley block (110).
  2. 2. The marine crane with the pulley abrasion reducing structure according to claim 1, wherein the pulley body (113) is arranged on the inner side of the U-shaped mounting plate (111), and connecting shafts on two end walls of the pulley body (113) are respectively arranged in bearings on two outer walls of the U-shaped mounting plate (111).
  3. 3. The marine crane with the pulley abrasion reducing structure according to claim 1, wherein two second L-shaped connecting plates (1123) are arranged on the rope falling preventing assembly (112), the two second L-shaped connecting plates (1123) are respectively arranged on the outer walls of the two sides of the U-shaped mounting plate (111), and a pressure detection sensor (1122) is arranged at one end of the inner side of each second L-shaped connecting plate (1123).
  4. 4. The marine crane with the pulley abrasion reducing structure according to claim 3, wherein the pressure detection sensor (1122) is connected with the buffer damper (1126) through a first mounting plate (1125), the other end of the buffer damper (1126) is mounted at one inner side end of the first L-shaped connecting plate (1121), two adjacent first L-shaped connecting plates (1121) are connected through a limiting rod (1124), and two ends of the limiting rod (1124) are respectively provided with a fastening nut.
  5. 5. The marine crane with the pulley abrasion reducing structure according to claim 1, wherein a second mounting plate (1143) is arranged on the abrasion prevention assembly (114), one side outer wall of the second mounting plate (1143) is connected with the first mounting plate (1125) through a damping cylinder (1145), a spring (1144) is arranged on the outer side of the outer wall of the damping cylinder (1145), the spring (1144) is located between the first mounting plate (1125) and the second mounting plate (1143), and the first mounting plate (1125) and the second mounting plate (1143) are both located on the outer side of the outer wall of the connecting shaft on the pulley body (113).
  6. 6. The marine crane with the pulley abrasion reducing structure according to claim 5, wherein an arc-shaped sliding block (1141) is arranged outside the other side of the second mounting plate (1143), the other end of the arc-shaped sliding block (1141) is arranged on a hollow annular sliding rail (1142), the arc-shaped sliding block (1141) is in sliding connection with the hollow annular sliding rail (1142), the hollow annular sliding rail (1142) is arranged on the inner side wall of the U-shaped mounting plate (111), and the third mounting plate (1146) is arranged on the outer wall of the pulley wheel body (113).

Description

Marine crane with pulley abrasion reduction structure Technical Field The utility model relates to the technical field of marine cranes, in particular to a marine crane with a pulley abrasion reducing structure. Background In modern shipping industry, a marine crane is used as a key loading and unloading device, plays an indispensable role in guaranteeing efficient transportation of cargoes, has complex and severe working environment, and faces many challenges such as sea wave jolts, sea wind erosion, mechanical loss caused by high-strength operation and the like, wherein the running condition of a pulley system has a remarkable influence on the overall performance of the crane. Through searching, patent publication number CN217102819U discloses a marine crane with wave fluctuation self-adaptation function, relates to the technical field of marine cranes. This marine crane with wave fluctuation self-adaptation function, including base, rotation platform, fixing base, davit and lifting hook, the equal fixedly connected with of davit both sides removes the case, it all articulates there is the support arm to rotate the platform both sides, remove the inside sliding connection of case has the slider, remove the inside fixedly connected with dead lever of case, rotate two spacing rails of platform bottom fixedly connected with, the inside rotation of spacing rail is connected with the lead screw, the lead screw outside is through running through nut pair connection with the locating piece, the inside sliding connection of spacing rail has the movable block, the equal fixedly connected with second spring in movable block both sides, movable block one side articulates there is the bracing piece. The marine crane with the wave fluctuation self-adaptation function is beneficial to adapting to different sea surface environments, convenient to adjust and strong in adaptability. When the existing marine crane is used for lifting cargoes, the direction of the steel wire rope is required to be changed frequently through the fixed pulley, in the process, the steel wire rope can generate larger acting force on the fixed pulley due to the gravity of the cargoes and the dynamic load in the lifting process, the acting force can enable the fixed pulley to bear huge radial pressure, the fixed pulley is easy to deviate under the long-term action, once the fixed pulley deviates, the ideal matching state between the fixed pulley and the steel wire rope can be damaged, on one hand, the local abrasion between the pulley and the steel wire rope can be aggravated, the thickness of the wall of the pulley is uneven, the service life of the pulley is reduced, the maintenance cost and the downtime of equipment are increased, on the other hand, the deviation can also cause vibration and noise of the pulley in the running process, the running stability of the crane is influenced, and even the working environment of surrounding operators is disturbed; Meanwhile, when the steel wire rope is wound and unwound under the driving of the winch, the steel wire rope is easy to be separated from the pulley groove of the fixed pulley in the winding process, namely, the rope separation phenomenon occurs, once the rope separation occurs, the lifting of cargoes is directly interrupted, serious safety accidents such as falling of cargoes can be caused when the cargoes are serious, the life safety of personnel on a ship is endangered, serious property loss can be caused to ships and peripheral facilities, in addition, the steel wire rope after the rope separation can be wound on other parts of the crane, secondary damage of equipment is caused, the repairing work is complex and time-consuming, and the operation efficiency of the ship is greatly influenced, so that the ship crane with the structure for reducing the pulley abrasion is designed. Disclosure of utility model Aiming at the defects or shortcomings of the marine crane, the utility model aims to provide the marine crane with the structure for reducing the pulley abrasion, which not only effectively avoids the abnormal abrasion of the pulley wheel body and the steel wire rope caused by the pulley wheel body deflection, but also effectively avoids the safety accident caused by the rope releasing of the steel wire rope from the pulley wheel body. In order to achieve the aim of the utility model, the utility model adopts the following technical scheme: The utility model provides a marine crane with a pulley abrasion reducing structure, which comprises a crane body for hoisting and transferring objects, wherein a fixed pulley block for guiding a steel wire rope reel Yang Guocheng is arranged on the crane body, an anti-falling rope assembly for limiting the steel wire rope in a certain direction and giving an early warning is arranged on the fixed pulley block, a pulley body is arranged on the fixed pulley block, and an anti-abrasion assembly for buffering the pulley body in a certain direction and prev