Lifting assembly of ship crane

Abstract

The invention relates to the technical field of ship cranes, in particular to a ship crane hoisting assembly which comprises a ship crane, a sling connecting and fixing assembly is arranged below the ship crane, a hoisting frame assembly is arranged below the sling connecting and fixing assembly, and an object fixing frame is arranged below the hoisting frame assembly. The container lifting device has the beneficial effects that the lifting frame assembly is designed to be matched with the gravity center adjusting assembly and the auxiliary buffer frame assembly, and the first position sensor and the second position sensor are carried on the two sides of the object fixing frame, so that when a container is initially lifted, the gravity center adjusting assembly and the auxiliary buffer frame assembly are matched, and the gravity center adjusting assembly and the auxiliary buffer frame assembly are matched; whether the gravity center of the container deviates excessively or not is fed back, the independent sling winding roller set I and the sling winding roller set II are used for controlling the connecting sling to achieve winding or loosening of the winding roller adjusting sliding rail in the displacement process, the gravity center of the container is adjusted in the direction opposite to the deviation direction, and the stability of the container in the lifting process is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship cranes, and particularly relates to a lifting assembly of a ship crane. Background Art

[0002] Ship cranes are used for operations such as loading, unloading, and handling of cargo containers on ships or in ports. Their lifting assemblies are one of the key components, responsible for lifting cargo containers from the deck or the cabin to the required position. Ships are prone to instability in the water environment, and the containers lifted by the crane at the lifting end will swing accordingly. However, in the prior art, most cranes do not have a lifting anti-swing assembly. During lifting, the containers swing, and the internal cargo shifts, resulting in the center of gravity of the container being prone to shift and the container being inclined, which is not conducive to the lifting, handling, and subsequent placement of ship cranes.

[0003] The Chinese patent document with the publication number CN217025074U proposes a lifting anti-swing assembly for a crane. By designing a vertical telescopic rod above the pulley connecting the sling, the telescopic rod expands and contracts as the sling moves up and down to improve the stability of the sling limit to solve the above technical problems. However, when the ship shakes, the lifted object swings on both sides. Relying only on a single vertical limit, it is very likely that the telescopic rod will break and cause danger when swinging occurs on both sides.

[0004] Therefore, the present invention proposes a lifting assembly of a ship crane to solve the problem that the anti-swing and offset design of the lifting assembly of the crane in the prior art is not in place when lifting objects. By installing position sensors on both sides under the lifting fixing frame and designing two independent sling winding assemblies in cooperation above, in the case of the overall inclination of the lifting, according to the change of sensor data caused by the swing on both sides of the lifting fixing frame, it is fed back to the sling winding control assemblies on both sides for center of gravity adjustment to restore the center of gravity offset caused by the inclination during container lifting, so as to achieve the purpose of maintaining stability during the lifting process. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a lifting assembly of a ship crane to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: a hoisting assembly of a ship crane, including a ship crane, a sling connection and fixing assembly is arranged below the ship crane, a hoisting frame assembly is arranged below the sling connection and fixing assembly, an object fixing frame is arranged below the hoisting frame assembly, a center of gravity adjustment assembly and an auxiliary buffer frame assembly are arranged on both sides of the object fixing frame, the hoisting frame assembly includes a hoisting frame, a first sling winding roller group and a second sling winding roller group, a first position sensor and a second position sensor are symmetrically arranged on both sides of the object fixing frame respectively, the center of gravity adjustment assembly includes a first center of gravity moving frame, a second center of gravity moving frame, a first sliding sleeve and a second sliding sleeve, and the auxiliary buffer frame assembly includes a first movable frame and a second movable frame.

[0007] Preferably, winding roller adjustment slide rails are provided on the inner walls on both sides of the hoisting frame assembly. The first sling winding roller group and the second sling winding roller group have the same structure. The first sling winding roller group and the second sling winding roller group are symmetrically and movably installed inside the winding roller adjustment slide rails on both sides respectively. Gear limit guide rails are symmetrically and fixedly installed at the bottom of the inner surface of the hoisting frame. Gears meshing with the gear limit guide rails are fixedly installed at both ends of the first sling winding roller group and the second sling winding roller group respectively.

[0008] Preferably, connecting slings are symmetrically arranged outside the first sling winding roller group and the second sling winding roller group. Sling movement slide rails adapted to the connecting slings are symmetrically provided on the inner wall of the bottom of the hoisting frame. The first sliding sleeve and the second sliding sleeve are symmetrically installed inside the connecting slings respectively. The first sliding sleeve and the second sliding sleeve have the same structure. There are two sets of the first sliding sleeve and the second sliding sleeve respectively. The two sets of the first sliding sleeve are arranged on the same side of the first sling winding roller group, and the two sets of the second sliding sleeve are arranged on the same side of the second sling winding roller group. Rotating protective sleeves adapted to the connecting slings are movably installed inside the first sliding sleeve and the second sliding sleeve respectively.

[0009] Preferably, a first winding drive equipment assembly and a second winding drive equipment assembly for driving the movement of the first sling winding roller group and the second sling winding roller group are respectively arranged inside the hoisting frame. The first winding drive equipment assembly and the second winding drive equipment assembly both include a motor and a threaded rod. The inner wall of the middle part of the first sling winding roller group is threadedly connected with the outer surface of the threaded rod of the first winding drive equipment assembly. The inner wall of the middle part of the second sling winding roller group is threadedly connected with the outer surface of the threaded rod of the second winding drive equipment assembly.

[0010] Preferably, the four corners of the top of the object fixing frame are fixedly connected with the four groups of connecting slings respectively. The first position sensor is arranged on the same side of the first sling winding roller group, and the second position sensor is arranged on the same side of the second sling winding roller group. A fixed hoist hook is fixedly installed at the bottom of the object fixing frame.

[0011] Preferably, one end of the center-of-gravity moving frame I is fixedly connected to the side surface of the sliding sleeve I, one end of the center-of-gravity moving frame II is fixedly connected to the side surface of the sliding sleeve II, and T-shaped limiting sliding grooves adapted to the center-of-gravity moving frame I and the center-of-gravity moving frame II are symmetrically formed on the lower surface of the lifting frame respectively.

[0012] Preferably, the center-of-gravity moving frame I and the center-of-gravity moving frame II have the same structure. Spring telescopic sleeve rods are fixedly installed on the lower surfaces of the other ends of the center-of-gravity moving frame I and the center-of-gravity moving frame II respectively. The spring telescopic sleeve rod includes a square sleeve and a sliding rod slidably installed inside the square sleeve. A spring is sleeved outside the sliding rod, and a bottom cable fixing hook plate is fixedly installed at the bottom of the sliding rod of the spring telescopic sleeve rod.

[0013] Preferably, one end of the movable frame I is fixedly connected to the side surface of the sliding sleeve II, one end of the movable frame II is fixedly connected to the side surface of the sliding sleeve I, and sliding grooves adapted to the movable frame I and the movable frame II are provided at the bottom of the lifting frame respectively.

[0014] Preferably, height adjusting frames are fixedly installed on the lower surfaces of the other ends of the movable frame I and the movable frame II respectively. The height adjusting frame includes a movable sleeve and a movable rod. Bolt locking holes are provided on both the movable rod and the movable sleeve. Buffer frames are rotatably installed on the inner sides of the two groups of movable rods.

[0015] Preferably, a main buffer plate is movably installed inside the buffer frame. Buffer springs are evenly distributed between the side surface of the main buffer plate and the inner surface of the buffer frame. A damper is arranged inside the buffer spring, and side buffer plates are symmetrically hinged on both sides of the buffer frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] By designing the cooperation of the lifting frame assembly, the center-of-gravity adjustment assembly and the auxiliary buffer frame assembly, and installing position sensor I and position sensor II on both sides of the object fixing frame, at the initial stage of container hoisting, feedback is provided on whether the center of gravity of the container deviates too much. By controlling the connection of the sling in the independent sling winding roller set I and the sling winding roller set II to wind or relax the winding roller adjusting slide rail during the displacement process of the sling, the center of gravity of the container is adjusted in the reverse direction of the deviation, ensuring that the container can be adjusted when the hoisting of the container deviates, and guaranteeing the stability of the container during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present invention;

[0019] Figure 2 is the overall structural schematic diagram of the lifting frame assembly of the present invention;

[0020] Figure 3 It is a schematic bottom view of the overall structure of the hanging bracket assembly of the present invention;

[0021] Figure 4 It is a schematic top view of the overall internal structure of the hanging bracket assembly of the present invention;

[0022] Figure 5 It is a schematic internal structure view of one side of the hanging bracket assembly of the present invention;

[0023] Figure 6 It is a schematic internal structure view of the other side of the hanging bracket assembly of the present invention;

[0024] Figure 7 It is a schematic bottom view of the installation positions of the center-of-gravity adjustment assembly and the auxiliary buffer bracket assembly of the present invention;

[0025] Figure 8 It is a schematic top view of the installation positions of the center-of-gravity adjustment assembly and the auxiliary buffer bracket assembly of the present invention;

[0026] Figure 9 It is a schematic bottom view of the overall installation relationship between the first sliding sleeve and the second sliding sleeve of the present invention;

[0027] Figure 10 It is a schematic structural view of the installation relationship between the first sliding sleeve, the first center-of-gravity moving bracket, and the second movable bracket of the present invention;

[0028] Figure 11 It is a schematic overall structural view of the buffer bracket of the present invention.

[0029] In the figure: 1. Ship crane; 11. Sling connection and fixing assembly; 2. Hanging bracket assembly; 21. Hanging bracket; 211. Reel adjusting slide rail; 212. Sling moving slide rail; 213. Gear limit guide rail; 22. First sling reel group; 22A. Second sling reel group; 221. Connecting sling; 23. First winding drive equipment assembly; 23A. Second winding drive equipment assembly; 3. Object fixing bracket; 31. Fixed hoist hook; 32. First position sensor; 32A. Second position sensor; 4. Center-of-gravity adjustment assembly; 41. First center-of-gravity moving bracket; 41A. Second center-of-gravity moving bracket; 42. Spring telescopic rod; 421. Bottom cable fixing hook plate; 43. First sliding sleeve; 43A. Second sliding sleeve; 431. Rotating protection sleeve; 5. Auxiliary buffer bracket assembly; 51. First movable bracket; 51A. Second movable bracket; 52. Height adjustment bracket; 53. Buffer bracket; 531. Main buffer plate; 532. Side buffer plate. Detailed implementation manners

[0030] In order to clearly and completely describe the objectives, technical solutions of the present invention and make its advantages more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only a part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0031] Embodiment 1

[0032] Please refer to Figures 1 to 11, the present invention provides a technical solution: a hoisting assembly for a ship crane, including a ship crane 1, a sling connection and fixing assembly 11 is arranged below the ship crane 1, a lifting frame assembly 2 is arranged below the sling connection and fixing assembly 11, an object fixing frame 3 is arranged below the lifting frame assembly 2, a center of gravity adjustment assembly 4 and an auxiliary buffer frame assembly 5 are arranged on both sides of the object fixing frame 3, the lifting frame assembly 2 includes a lifting frame 21, a first sling winding roller group 22 and a second sling winding roller group 22A, a first position sensor 32 and a second position sensor 32A are symmetrically arranged on both sides of the object fixing frame 3 respectively, the center of gravity adjustment assembly 4 includes a first center of gravity moving frame 41, a second center of gravity moving frame 41A, a first sliding sleeve 43 and a second sliding sleeve 43A, the auxiliary buffer frame assembly 5 includes a first movable frame 51 and a second movable frame 51A, winding roller adjustment slide rails 211 are arranged on the inner walls on both sides of the lifting frame assembly 2, the first sling winding roller group 22 and the second sling winding roller group 22A have the same structure, the first sling winding roller group 22 and the second sling winding roller group 22A are symmetrically and movably installed inside the winding roller adjustment slide rails 211 on both sides respectively, gear limit guide rails 213 are symmetrically and fixedly installed at the bottom of the inner surface of the lifting frame 21, gears meshing with the gear limit guide rails 213 are fixedly installed at both ends of the first sling winding roller group 22 and the second sling winding roller group 22A respectively, connecting slings 221 are symmetrically arranged outside the first sling winding roller group 22 and the second sling winding roller group 22A, sling moving slide rails 212 adapted to the connecting slings 221 are symmetrically arranged on the bottom inner wall of the lifting frame 21, the first sliding sleeve 43 and the second sliding sleeve 43A are symmetrically installed inside the connecting slings 221 respectively, the first sliding sleeve 43 and the second sliding sleeve 43A have the same structure, there are two groups of the first sliding sleeve 43 and the second sliding sleeve 43A respectively, the two groups of the first sliding sleeve 43 are arranged on the same side of the first sling winding roller group 22, the two groups of the second sliding sleeve 43A are arranged on the same side of the second sling winding roller group 22A, rotating protective sleeves 431 adapted to the connecting slings 221 are movably installed inside the first sliding sleeve 43 and the second sliding sleeve 43A respectively, a first winding driving equipment assembly 23 and a second winding driving equipment assembly 23A for driving the first sling winding roller group 22 and the second sling winding roller group 22A to move are arranged inside the lifting frame 21 respectively, the first winding driving equipment assembly 23 and the second winding driving equipment assembly 23A both include a motor and a threaded rod, the inner wall of the middle part of the first sling winding roller group 22 is threadedly connected with the outer surface of the threaded rod of the first winding driving equipment assembly 23, the inner wall of the middle part of the second sling winding roller group 22A is threadedly connected with the outer surface of the threaded rod of the second winding driving equipment assembly 23A, the four corners of the top of the object fixing frame 3 are fixedly connected with the four groups of connecting slings 221 respectively, the first position sensor 32 is arranged on the same side of the first sling winding roller group 22, the second position sensor 32A is arranged on the same side of the second sling winding roller group 22A, a fixed hoist hook 31 is fixedly installed at the bottom of the object fixing frame 3;

[0033] In this embodiment, it should be noted that the sling winding roller set one 22 and the sling winding roller set two 22A mainly include a middle square block and winding round rollers symmetrically and rotatably installed on both sides of the square block. And a gear is provided at one end of the winding round roller. The motor that drives the rotation of the threaded rod of the winding drive device assembly one 23 is installed on the side surface of the lifting frame 21 close to the sling winding roller set one 22. And the inner wall of the middle part of the sling winding roller set two 22A does not contact the outer surface of the threaded rod of the winding drive device assembly one 23. The motor that drives the rotation of the threaded rod of the winding drive device assembly two 23A is installed on the side surface of the lifting frame 21 close to the sling winding roller set two 22A. And the inner wall of the middle part of the sling winding roller set one 22 does not contact the outer surface of the threaded rod of the winding drive device assembly two 23A. The winding drive device assembly two 23A and the winding drive device assembly one 23 are controlled by the ship crane control system and operate independently to drive the sling winding roller set one 22 and the sling winding roller set two 22A to move respectively. The winding roller adjusting slide rail 211 limits the winding round rollers of the sling winding roller set one 22 and the sling winding roller set two 22A. The connecting sling 221 is wound around the outer parts of the winding round rollers of the sling winding roller set one 22 and the sling winding roller set two 22A. And one end of the connecting sling 221 is fixed on the outer surface of the winding round rollers of the sling winding roller set one 22 and the sling winding roller set two 22A to prevent the connecting sling 221 from loosening when it is unreeled to the end. The sliding sleeve one 43 and the sliding sleeve two 43A are mainly movably installed inside the sling moving slide rail 212 to protect and limit the connecting sling 221. As the sling winding roller set one 22 or the sling winding roller set two 22A moves, the gears of the winding round rollers on both sides thereof rotate the winding round rollers under the limiting cooperation of the gear limiting guide rail 213. Taking the sling winding roller set one 22 as an example, the winding and unwinding procedure of the connecting sling 221 is designed as follows: the motor of the winding drive device assembly one 23 drives the threaded rod to rotate, so that the sling winding roller set one 22 moves towards one side of the lifting frame 21 under the limiting cooperation of the winding roller adjusting slide rail 211 and the gear limiting guide rail 213. And during the movement, the winding round rollers of the sling winding roller set one 22 rotate to unwind the connecting sling 221. On the contrary, when the sling winding roller set one 22 moves towards the middle of the lifting frame 21, the connecting sling 221 is wound up. The sling winding roller set two 22A is symmetrically arranged with respect to the sling winding roller set one 22. Similarly, it also unwinds as the sling winding roller set two 22A moves towards the other side of the lifting frame 21, and winds up on the contrary;The fixed hoist hook 31 under the object fixing frame 3 is used to hang and fix the buckle above the lifting container. Specifically, in the lifting process, the container is suspended below the object fixing frame 3 through the fixed hoist hook 31. The ship crane 1 is fixed by connecting the fixed component 11 with the hoist hook in the middle above the lifting frame 21 through a sling to hoist and transport the whole lifting frame assembly 2, the object fixing frame 3 and the container. Here, it should be noted that the lifting and moving of the container mainly rely on the ship crane 1. The lifting frame assembly 2 and the object fixing frame 3 mainly cooperate to play the role of installing the container. In the center of gravity compensation program during the container lifting process, when the container swings and the internal goods move, resulting in the center of gravity of the container shifting, the whole lifting will tilt to a certain extent. For example, during the lifting of the container, the center of gravity shifts towards the side of the position sensor one 32. The object fixing frame 3 and the whole lifting frame assembly 2 will tilt towards the side of the position sensor one 32. At this time, the side of the position sensor two 32A will be higher than the side of the position sensor one 32. There will be a certain change and difference in the heights of the position sensor one 32 and the position sensor two 32A. At this time, the data of the position sensor one 32 and the position sensor two 32A are fed back to the crane control device. After analyzing the data, a control signal is output to the winding drive device assembly one 23 and the winding drive device assembly two 23A, so that the motor of the winding drive device assembly two 23A works, and the sling winding roller set two 22A moves towards the side of the lifting frame 21, relaxing the connecting sling 221 to sink the tilted end of the container. The motor of the winding drive device assembly one 23 works to make the sling winding roller set one 22 move a certain distance closer to the center of the lifting frame 21, assisting in the adjustment in cooperation with the sinking of the other side of the container, so that the overall center of gravity moves towards the side of the position sensor two 32A for adjustment until the height data change of the position sensor one 32 and the position sensor two 32A is within the set error range. At this time, the center of gravity of the object remains stable, and the whole dynamic adjustment mechanism is completed. And it should be noted that the adjustment process should be slow and stable, and the center of gravity deviation of the object during the lifting process should be monitored and adjusted in real time to keep the object stable. Designing this adjustment mechanism can ensure the smoothness of the container during lifting, facilitating the later lifting and unloading of the container.;

[0034] Embodiment 2

[0035] Please refer to Figures 1 to 11, on the basis of the first embodiment, in order to cooperate with the center-of-gravity adjustment during the object hoisting process, this embodiment also proposes that one end of the center-of-gravity moving frame 41 is fixedly connected to the side surface of the sliding sleeve 43, and one end of the center-of-gravity moving frame 41A is fixedly connected to the side surface of the sliding sleeve 43A. T-shaped limiting sliding grooves adapted to the center-of-gravity moving frame 41 and the center-of-gravity moving frame 41A are symmetrically formed on the lower surface of the lifting frame 21. The center-of-gravity moving frame 41 and the center-of-gravity moving frame 41A have the same structure. Spring telescopic rods 42 are fixedly installed on the lower surfaces of the other ends of the center-of-gravity moving frame 41 and the center-of-gravity moving frame 41A respectively. The spring telescopic rod 42 includes a square sleeve and a sliding rod slidably installed inside the square sleeve. A spring is sleeved outside the sliding rod. A bottom cable fixing hook plate 421 is fixedly installed at the bottom of the sliding rod of the spring telescopic rod 42;

[0036] In this embodiment, the sliding sleeve 43 and the sliding sleeve 43 have the same structure. Taking the sliding sleeve 43 as an example, the rotating protective sleeve 431 is wrapped outside the connecting sling 221 and can deflect inside the sliding sleeve 43, which can reduce the friction between the connecting sling 221 and the inside of the sliding sleeve 43. At the same time, the rotating protective sleeve 431 can sleeve and limit the connecting sling 221 to ensure the stability of the connecting sling 221 when it moves inside the sling moving slide rail 212. At the same time, the sliding sleeve 43 is connected to the center-of-gravity moving frame 41, and the sliding sleeve 43A is connected to the center-of-gravity moving frame 41A. On the basis of the example of the first embodiment, for example, when the center of gravity shifts to one side of the position sensor 32, the sling winding roller set 22A moves toward the lifting frame 21 to unwind the connecting sling 221. At this time, the sliding sleeve 43A is driven to move along the sling moving slide rail 212 toward one side of the lifting frame 21, so that the center-of-gravity moving frame 41A drives the spring telescopic rod 42 below to move outward as a whole. The sling winding roller set 1 22 cooperates with the adjustment process of the sling winding roller set 22A to move toward the middle of the lifting frame 21, so that the sliding sleeve 43 is driven to move along the sling moving slide rail 212 toward the middle of the lifting frame 21, so that the center-of-gravity moving frame 41 drives the spring telescopic rod 42 below to move toward the middle as a whole, further promoting the adjustment of the center of gravity toward the side of the position sensor 32A. Such a design can minimize the distance that the sling winding roller set 1 22 and the sling winding roller set 22A need to move during the center-of-gravity adjustment. And the bottom cable fixing hook plate 421 installed below the spring telescopic rod 42 also has a hoist hook, which can play a certain auxiliary traction role through the elastic cable connecting the lower hook of the container during the center-of-gravity adjustment process to help the container maintain stability. And the elastic telescopic design of the spring telescopic rod 42 can avoid shaking. The telescopic length of the spring telescopic rod 42 needs to be designed according to actual data.

[0037] Embodiment Three

[0038] Please refer to Figures 1 to 11 Based on Embodiment 2, in order to provide a limiting and buffering effect when adjusting the center of gravity of the container, the present embodiment further proposes that one end of the first movable frame 51 is fixedly connected to the side surface of the second sliding sleeve 43A, and one end of the second movable frame 51A is fixedly connected to the side surface of the first sliding sleeve 43. The bottom of the lifting frame 21 is respectively provided with sliding grooves adapted to the first movable frame 51 and the second movable frame 51A. The lower surfaces of the other ends of the first movable frame 51 and the second movable frame 51A are both fixedly installed with height adjustment frames 52. The height adjustment frame 52 includes a movable sleeve and a movable rod. Bolt locking holes are provided on both the movable rod and the movable sleeve. A buffer frame 53 is rotatably installed on the inner sides of the two groups of movable rods. A main buffer plate 531 is movably installed inside the buffer frame 53. Buffer springs are evenly distributed between the side surface of the main buffer plate 531 and the inner surface of the buffer frame 53. A damper is provided inside the buffer spring. Side buffer plates 532 are symmetrically hinged on both sides of the buffer frame 53;

[0039] In this embodiment, according to Embodiment 2, when adjusting the center of gravity offset to the side of the first position sensor 32 during the lifting process of the container, as the sling on the side of the second sling winding roller set 22A moves and unwinds, the first sling winding roller set 22 cooperates to move and wind the connecting sling 221, so that the raised end of the container sinks and resets, and the sunken end rises and resets. The second sliding sleeve 43A is driven to move towards one side of the lifting frame 21. At this time, the first movable frame 51 is also driven to move towards the middle of the lifting frame 21, so that the buffer frame 53 approaches the lifting moving direction of the container. At the same time, the first sliding sleeve 43 is driven to move towards the middle of the lifting frame 21. At this time, the second movable frame 51A is driven to move towards one side of the lifting frame 21, so that the buffer frame 53 moves away from the sunken moving direction of the container to avoid interference, and at the same time, it cooperates with the buffer frame 53 on the other side to limit the lifting range of the container to a certain extent. The main buffer plate 531 and the side buffer plate 532 mainly cooperate to buffer the container against limiting and prevent collision during the lifting process, ensuring the stability of the container lifting.

[0040] Embodiment 4

[0041] Please refer to Figures 1 to 11 Based on Embodiment 4, the present embodiment further proposes a method for using a lifting assembly of a ship crane, including the following steps:

[0042] Step 1: fix the upper hook of the container to the fixed hoist hook 31, and then the ship crane 1 works to lift the container to the bottom of the hanging object fixing frame 3, and pull the bottom of the container through the elastic rope and the hoist hook at the bottom of the bottom cable fixing hook plate 421. It is worth noting that before installing the container, it is necessary to adjust the position of the sling winding roller group 1 22 and the sling winding roller group 2 22A, so that the sling winding roller group 1 22 and the sling winding roller group 2 22A are in the middle initial position of the winding roller adjustment slide rail 211, and reserve space for the later adjustment of the center of gravity of the container;

[0043] Step 2: adjusting the center of gravity tilt. If the center of gravity of the container shifts to one side during the lifting process, resulting in tilt, the height difference data between the position sensor 1 32 and the position sensor 2 32A is fed back to the control device of the crane. The control device sends a control signal to make the winding drive device component 1 23 and the winding drive device component 2 23A work independently. By loosening the connecting sling 221 on the side opposite to the center of gravity shift and cooperating with the winding connecting sling 221 on the other side, the center of gravity is adjusted to restore the tilted container.

[0044] Step 3: When the center of gravity is adjusted back to the normal position, the first center of gravity moving frame 41 and the second center of gravity moving frame 41A maintain the same adjustment displacement direction as the sling 221 connected on the same side, further promoting the adjustment of the center of gravity to the other side. The bottom cable fixing hook plate 421 installed below the spring telescopic sleeve rod 42 can be connected to the lower hook of the container through the elastic cable to play a certain auxiliary traction role in the process of center of gravity adjustment;

[0045] Step 4: until the height data of the position sensor 1 32 and the position sensor 2 32A change within the set error range, the center of gravity of the object remains stable, the center of gravity adjustment mechanism is completed, and the ship crane 1 can continue to work to lift and transport the container.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting assembly of a ship crane, comprising a ship crane (1), and a sling connection and fixing assembly (11) is arranged below the ship crane (1), and is characterized in that: Below the sling connection and fixing component (11), there is a lifting frame component (2). Below the lifting frame component (2), there is an object fixing frame (3). On both sides of the object fixing frame (3), there are a center of gravity adjustment component (4) and an auxiliary buffer frame component (5). The lifting frame component (2) includes a lifting frame (21), a first sling winding roller group (22), and a second sling winding roller group (22A). On both sides of the object fixing frame (3), a first position sensor (32) and a second position sensor (32A) are symmetrically arranged respectively. The center of gravity adjustment component (4) includes a first center of gravity moving frame (41), a second center of gravity moving frame (41A), a first sliding sleeve (43), and a second sliding sleeve (43A). The auxiliary buffer frame component (5) includes a first movable frame (51) and a second movable frame (51A).

2. The lifting assembly of a ship crane according to claim 1, characterized in that: On the inner walls on both sides of the lifting frame component (2), there are winding roller adjustment slide rails (211). The first sling winding roller group (22) and the second sling winding roller group (22A) have the same structure. The first sling winding roller group (22) and the second sling winding roller group (22A) are symmetrically and movably installed inside the winding roller adjustment slide rails (211) on both sides respectively. At the bottom inner surface of the lifting frame (21), gear limit guide rails (213) are symmetrically and fixedly installed. At both ends of the first sling winding roller group (22) and the second sling winding roller group (22A), gears meshing with the gear limit guide rails (213) are fixedly installed respectively.

3. The lifting assembly of a ship crane according to claim 2, characterized in that: On the outside of the first sling winding roller group (22) and the second sling winding roller group (22A), connecting slings (221) are symmetrically arranged. At the bottom inner wall of the lifting frame (21), sling movement slide rails (212) adapted to the connecting slings (221) are symmetrically opened. The first sliding sleeve (43) and the second sliding sleeve (43A) are symmetrically installed inside the connecting slings (221) respectively. The first sliding sleeve (43) and the second sliding sleeve (43A) have the same structure. Both the first sliding sleeve (43) and the second sliding sleeve (43A) have two groups. The two groups of the first sliding sleeve (43) are arranged on the same side of the first sling winding roller group (22). The two groups of the second sliding sleeve (43A) are arranged on the same side of the second sling winding roller group (22A). Inside the first sliding sleeve (43) and the second sliding sleeve (43A), rotating protective sleeves (431) adapted to the connecting slings (221) are movably installed.

4. The lifting assembly of a ship crane according to claim 2, characterized in that: Inside the lifting frame (21), there are a first winding drive equipment component (23) and a second winding drive equipment component (23A) for driving the movement of the first sling winding roller group (22) and the second sling winding roller group (22A) respectively. Both the first winding drive equipment component (23) and the second winding drive equipment component (23A) include a motor and a threaded rod. The inner wall in the middle of the first sling winding roller group (22) is threadedly connected to the outer surface of the threaded rod of the first winding drive equipment component (23). The inner wall in the middle of the second sling winding roller group (22A) is threadedly connected to the outer surface of the threaded rod of the second winding drive equipment component (23A).

5. The lifting assembly of a ship crane according to claim 3, characterized in that: The four corners of the top of the object fixing frame (3) are respectively fixedly connected to four groups of the connecting sling ropes (221). The first position sensor (32) is arranged on the same side of the first sling winding roller group (22), and the second position sensor (32A) is arranged on the same side of the second sling winding roller group (22A). A fixed hoist hook (31) is fixedly installed at the bottom of the object fixing frame (3).

6. The lifting assembly of a ship crane according to claim 4, characterized in that: One end of the first center-of-gravity moving frame (41) is fixedly connected to the side surface of the first sliding sleeve (43), and one end of the second center-of-gravity moving frame (41A) is fixedly connected to the side surface of the second sliding sleeve (43A). T-shaped limiting sliding grooves adapted to the first center-of-gravity moving frame (41) and the second center-of-gravity moving frame (41A) are symmetrically formed on the lower surface of the lifting frame (21).

7. A lifting assembly of a ship crane according to claim 1, characterized in that: The first center-of-gravity moving frame (41) and the second center-of-gravity moving frame (41A) have the same structure. Spring telescopic sleeve rods (42) are respectively fixedly installed on the lower surfaces of the other ends of the first center-of-gravity moving frame (41) and the second center-of-gravity moving frame (41A). The spring telescopic sleeve rod (42) includes a square sleeve and a sliding rod slidably installed inside the square sleeve. A spring is sleeved outside the sliding rod. A bottom cable fixing hook plate (421) is fixedly installed at the bottom of the sliding rod of the spring telescopic sleeve rod (42).

8. The lifting assembly of a ship crane according to claim 7, characterized in that: One end of the first movable frame (51) is fixedly connected to the side surface of the second sliding sleeve (43A), and one end of the second movable frame (51A) is fixedly connected to the side surface of the first sliding sleeve (43). Sliding grooves adapted to the first movable frame (51) and the second movable frame (51A) are respectively arranged at the bottom of the lifting frame (21).

9. The lifting assembly of a ship crane according to claim 7, characterized in that: Height adjusting frames (52) are fixedly installed on the lower surfaces of the other ends of the first movable frame (51) and the second movable frame (51A). The height adjusting frame (52) includes a movable sleeve and a movable rod. Bolt locking holes are provided on both the movable rod and the movable sleeve. Buffer frames (53) are rotatably installed on the inner sides of the two movable rods.

10. The lifting assembly of a ship crane according to claim 9, wherein: A main buffer plate (531) is movably installed inside the buffer frame (53). Buffer springs are evenly distributed between the side surface of the main buffer plate (531) and the inner surface of the buffer frame (53). A damping is arranged inside the buffer spring. Side buffer plates (532) are symmetrically hinged on both sides of the buffer frame (53).

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