Shipborne container hoisting system

Abstract

The utility model relates to the technical field of maritime work equipment, provides a shipborne container hoisting system, and aims to improve the port operation efficiency and safety. The system comprises a cart track, a cart, a trolley, a lifting appliance, a winch and a winding drum, eight steel wire ropes are connected with the lifting appliance and the winding drum, and accurate lifting of a container is achieved through a complex winding mode and a pulley mechanism. The system adopts a multi-steel-wire-rope design, stability is improved, deflection and shaking are reduced, the fracture risk of a single steel wire rope is reduced, and maintenance cost is reduced. The hoisting method comprises the steps of cart positioning, trolley accurate alignment, sling winding and hoisting preparation, hoisting operation, container placement and the like, and it is ensured that the container is safely and efficiently hoisted to the designated position. According to the utility model, the adaptability and flexibility of the hoisting system are improved, the logistics cost is reduced, and the transportation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of marine equipment, and particularly relates to a ship-mounted container hoisting system. BACKGROUND

[0002] In modern port operations, a ship-mounted container hoisting system has become an indispensable important equipment, which plays an important role in improving port operation efficiency, reducing cost, and ensuring safety. With the development of technology, a ship-mounted container hoisting system is constantly innovated and improved to meet the growing demand for port operations.

[0003] A ship-mounted container hoisting system refers to a complete set of equipment system installed on a ship for hoisting and handling containers. This system usually includes hoisting machinery such as ship-mounted cranes or gantry cranes, control systems, spreaders for connecting containers, and hoisting equipment such as steel wires and pulley blocks for connecting hoisting machinery and spreaders. A ship-mounted container hoisting system realizes fast and accurate hoisting and handling of containers by precisely controlling the movement of hoisting machinery and spreaders, shortens the loading and unloading time, improves the turnover rate of ports and ships, reduces logistics cost, and improves transportation efficiency.

[0004] Traditional container spreaders are connected to the drum by four steel wires and suspended below the trolley. When the trolley or the car moves, especially in the case of fast movement or sudden start and stop, due to inertia, the container spreader and the container may sway or shake. Although the four steel wires provide stable support, they inevitably cause shaking in bad conditions such as strong winds, affecting the accuracy and safety of loading and unloading. Especially for containers with uneven mass distribution, the tension of the four steel wires may differ during hoisting. Over time, this may cause uneven wear of the steel wires and even risk of steel wire breakage. The four steel wires work simultaneously, and any damage or wear of any one steel wire may affect the safety of the entire hoisting system. Therefore, regular inspection, maintenance, and replacement of the steel wires are required, which increases maintenance cost and downtime.

[0005] In addition, when the winch controls the lifting of the spreader, it is necessary to ensure that the four steel wires can be synchronized to avoid tilting or twisting of the spreader. The control system requires high precision, and if the control accuracy of the winch is insufficient or there is an error in the mechanical structure, the steel wires may not be synchronized, which may affect the stability of the spreader. SUMMARY

[0006] To solve the problems in the background art, the utility model provides a ship-mounted container hoisting system, which comprises:

[0007] The car track is laid on the ship body;

[0008] The trolley is installed on the trolley track, and the trolley is a gantry structure comprising a support beam and a top frame.

[0009] The trolley driving mechanism comprises a motor and a speed reducer, and is used for driving the trolley to move along the trolley track.

[0010] The trolley is installed on the trolley track, and the trolley is a gantry structure comprising a support beam and a top frame.

[0011] The lifting appliance is provided with a lifting beam for connecting the container, and the lifting beam is provided with a pulley mechanism comprising a right pulley mechanism, a middle pulley mechanism, a middle pulley mechanism and a left pulley mechanism.

[0012] The top frame is further provided with a winch and a winding drum, and the winding drum is connected to the pulley mechanism of the lifting appliance through a steel wire rope to drive the lifting appliance to lift.

[0013] The winch is in transmission connection with the winding drum to drive the winding drum to rotate, wind and release the steel wire rope, and control the height of the lifting appliance.

[0014] Eight steel wire ropes are arranged between the winding drum and the lifting appliance, and are respectively marked as L1, L2, …, L8, wherein L1, L2, L3 and L4 are connected to the winding drum from the left side of the winding drum, and the winding mode is from above the winding drum; L5, L6, L7 and L8 are connected to the winding drum from the right side of the winding drum, and the winding mode is from below the winding drum; wherein:

[0015] The leading end of L1 is connected to the leading end of L3 through the left pulley mechanism.

[0016] The leading end of L2 is connected to the leading end of L5 through the middle pulley mechanism.

[0017] The leading end of L4 is connected to the leading end of L7 through the middle pulley mechanism.

[0018] The leading end of L6 is connected to the leading end of L8 through the right pulley mechanism.

[0019] Further, six fixed pulleys are arranged on the top frame on the left side of the winding drum in sequence, and are respectively marked as C1, C2, …, C6; six fixed pulleys are arranged on the top frame on the right side of the winding drum in sequence, and are respectively marked as C7, C8, …, C12, wherein:

[0020] L1 is connected to C2 and C1 in sequence.

[0021] L2 is connected to C3.

[0022] L3 is connected to C4 and C6 in sequence.

[0023] L4 is connected to C5.

[0024] L5 connects C8;

[0025] L6 connects C9 and C7 in turn;

[0026] L7 connects C10;

[0027] L8 connects C11 and C12 in turn.

[0028] In the preferred scheme, C1 is arranged along the plane of X axis and Z axis; C2 is arranged along the plane of X axis and Y axis; C3 is arranged along the plane of Y axis and Z axis; the included angle between C4 and the plane of X axis and Y axis is a; C5 is arranged along the plane of Y axis and Z axis; C6 is arranged along the plane of Y axis and Z axis; C7 is arranged along the plane of X axis and Z axis; C8 is arranged along the plane of Y axis and Z axis; the included angle between C9 and the plane of X axis and Y axis is b; C10 is arranged along the plane of Y axis and Z axis; the included angle between C11 and the plane of X axis and Y axis is g; C12 is arranged along the plane of X axis and Z axis.

[0029] In the preferred scheme, 0≤a≤30°, 0≤b≤30°, 0≤g≤30°.

[0030] The beneficial effects achieved by the utility model are as follows:

[0031] Firstly, the utility model adopts eight steel wire ropes (L1-L8) to connect the lifting appliance and the winding drum, which increases the stability of the hoisting system compared with the traditional four steel wire ropes. The design of multiple steel wire ropes can effectively reduce the inertial deviation and shaking generated during rapid movement or sudden start and stop, and improve the hoisting precision and safety. By setting the right pulley mechanism, the middle pulley mechanism, the left pulley mechanism and the complex winding mode, the tension distribution of the steel wire ropes is more uniform, the tension difference caused by uneven distribution of the container quality is reduced, and the hoisting stability is further improved.

[0032] Secondly, the design of eight steel wire ropes makes the tension borne by each steel wire rope relatively dispersed, reduces the risk of breakage of a single steel wire rope due to excessive tension, improves the safety and reliability of the entire hoisting system, and the tension distribution is more uniform, the wear of each steel wire rope is also more uniform, the premature damage and replacement frequency of the steel wire ropes caused by uneven wear are reduced, the maintenance cost and downtime are reduced.

[0033] Thirdly, through the accurate cooperative work of the large car and the small car and the real-time feedback adjustment of the control host, it is ensured that the lifting appliance can accurately align the lock hole of the container, and the adjustment and waiting time in the hoisting process is reduced. The transmission connection of the winch and the winding drum makes the lifting operation of the lifting appliance more rapid and accurate, and improves the hoisting efficiency.

[0034] Fourth: the setting of the fixed pulley (C1-C12) considers different angles (α, β, γ) to adapt to different hoisting needs and environmental conditions, and enhances the adaptability and flexibility of the hoisting system. In strong wind and other harsh conditions, multiple steel wires and complex winding methods can more effectively resist external interference and maintain the stability of the hoisting system. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is the overall structure diagram of the utility model;

[0036] Figure 2 is the working state schematic diagram of the marine container hoisting system of the utility model;

[0037] Figure 3 is the schematic diagram of the installation structure of the reel and the lifting appliance;

[0038] Figure 4 is Figure 3 is the structure enlarged view of A in Fig. 1;

[0039] Figure 5 is the schematic diagram of the winding method of the reel and the lifting appliance.

[0040] Reference numerals in the drawing:

[0041] 1, trolley; 11, support beam; 12, top frame; 2, trolley; 3, trolley drive mechanism; 4, trolley track; 5, reel; 6, winch; 7, lifting appliance; 71, lifting beam; 72, right pulley mechanism; 73, middle pulley mechanism; 74, middle pulley mechanism; 75, left pulley mechanism; 8, trolley drive mechanism. DETAILED DESCRIPTION

[0042] The technical solutions in the utility model will be described clearly and completely below with reference to the drawings in the utility model, and in addition, the forms of each structure described in the following embodiments are only examples, and the utility model is not limited to each structure described in the following embodiments. All other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0043] With reference to Figures 1-5 A ship-mounted container hoisting system comprises a trolley track 4, which is the basic support structure of the entire hoisting system and is laid on the ship body to provide a moving path for the trolley 1.

[0044] The trolley 1 includes a support beam 11 and a top frame 12. The support beam 11 is connected to the trolley track 4 through rollers below, realizing movement along the track. As one of the main structures of the lifting system, it is responsible for horizontal movement on the hull to adjust the position of the trolley 2 track. The trolley 1 is connected to the trolley track 4 through rollers, realizing movement along the track. The trolley 2 track is provided on the top frame 12 of the trolley 1, providing a horizontal movement path for the trolley 2. The motor, reducer and other components are installed on the trolley 1, and the trolley 1 is driven to move along the track through the transmission device.

[0045] The trolley drive mechanism 3 includes a motor, a reducer and other components. It receives instructions from the control host and drives the trolley 1 to move along the trolley track 4 through the cooperation of the motor and the reducer.

[0046] The trolley drive mechanism 3 is installed on the trolley 1 and connected to the trolley 1 through a transmission device to drive the trolley 1 to move.

[0047] The trolley 2 is installed on the trolley 2 track of the trolley 1 and moves horizontally through the trolley 2 track to achieve precise positioning of the spreader 7 in the horizontal plane. The trolley 2 is installed on the trolley 2 track of the top frame 12 of the trolley 1 and moves along the track through the trolley drive mechanism 8. The trolley drive mechanism 8 is provided on the trolley 2 track and drives the trolley 2 to move horizontally on the track.

[0048] The trolley drive mechanism 8 activates the trolley 2 running device according to the control instructions to drive the trolley 2 to move left and right along the track. It directly drives the trolley 2 to move on the track. It receives control instructions to achieve precise control of the trolley 2.

[0049] The spreader 7 includes a lifting beam 71 for connecting containers and a pulley mechanism. The pulley mechanism includes a right pulley mechanism 72, a middle pulley mechanism 73, a middle pulley mechanism 74 and a left pulley mechanism 75. It is connected to the winch 5 through the pulley mechanism and the steel wire rope to realize the lifting and handling of the container. The spreader 7 is connected to the winch 5 through eight steel wire ropes connected by the pulley mechanism to realize the lifting of the spreader 7. The locking jaw on the lifting beam 71 is connected to the locking hole of the container and locked to fix the container.

[0050] The winch 6 is connected to the winch 5, which drives the winch 5 to rotate through the transmission connection, winding and releasing the steel wire rope to control the height of the spreader 7. The winch 6 is connected to the winch 5 to drive the winch 5 to rotate. The winch 5 is connected to the pulley mechanism of the spreader 7 through eight steel wire ropes to control the lifting of the spreader 7. It receives control instructions and controls the rotation direction and speed of the winch 6 according to the instructions.

[0051] The fixed pulley is installed on the top frame 12 as a fixing and guiding point of the steel wire rope, changes the running direction of the steel wire rope, and ensures that the steel wire rope can run along a predetermined path, thereby realizing accurate control of the lifting device 7. The winding drum 5 and the lifting device 7 are connected by the steel wire ropes, and the running direction of the steel wire ropes is changed. Eight steel wire rope connections are arranged between the winding drum 5 and the lifting device 7, and are respectively denoted as L1, L2, …, L8. L1, L2, L3 and L4 are connected to the winding drum 5 from the left side of the winding drum 5, and are wound from above the winding drum 5; L5, L6, L7 and L8 are connected to the winding drum 5 from the right side of the winding drum 5, and are wound from below the winding drum 5; wherein:

[0052] The leading end of L1 is connected to the leading end of L3 through the left pulley mechanism 75; the leading end of L2 is connected to the leading end of L5 through the middle two pulley mechanism 74; the leading end of L4 is connected to the leading end of L7 through the middle two pulley mechanism 74; and the leading end of L6 is connected to the leading end of L8 through the right pulley mechanism 72. Six fixed pulleys are sequentially arranged on the top frame 12 on the left side of the winding drum 5, and are respectively denoted as C1, C2, …, C6; and six fixed pulleys are sequentially arranged on the top frame 12 on the right side of the winding drum 5, and are respectively denoted as C7, C8, …, C12, wherein:

[0053] L1 is sequentially connected to C2 and C1; L2 is connected to C3; L3 is sequentially connected to C4 and C6; L4 is connected to C5; L5 is connected to C8; L6 is sequentially connected to C9 and C7; L7 is connected to C10; and L8 is sequentially connected to C11 and C12.

[0054] C1 is arranged along the plane where the X axis and the Z axis are located; C2 is arranged along the plane where the X axis and the Y axis are located; C3 is arranged along the plane where the Y axis and the Z axis are located; the included angle between C4 and the plane where the X axis and the Y axis are located is α; C5 is arranged along the plane where the Y axis and the Z axis are located; C6 is arranged along the plane where the Y axis and the Z axis are located; C7 is arranged along the plane where the X axis and the Z axis are located; C8 is arranged along the plane where the Y axis and the Z axis are located; the included angle between C9 and the plane where the X axis and the Y axis are located is β; C10 is arranged along the plane where the Y axis and the Z axis are located; the included angle between C11 and the plane where the X axis and the Y axis are located is γ; and C12 is arranged along the plane where the X axis and the Z axis are located. Wherein, 0≤α≤30°, 0≤β≤30°, and 0≤γ≤30°.

[0055] The ship-mounted container hoisting process of the utility model is carried out according to the following steps:

[0056] I. Preparation stage;

[0057] System initialization: Ensure that all components of a ship-mounted container hoisting system, including the trolley 1, the trolley 2, the winch 6, the drum 5, the spreader 7, etc., are in normal state. Check whether the steel wires (L1-L8) are worn or broken, and ensure that all pulleys (C1-C12) are flexible. Start the control host and perform system self-check to ensure that the control system is error-free. According to the instructions of the control host or the indications of the operator, determine the specific position of the container to be hoisted.

[0058] Secondly, trolley 1 positioning;

[0059] Trolley 1 movement: The trolley drive mechanism 3 receives the instructions of the control host, and the motor and the speed reducer work together to drive the trolley 1 to move along the trolley track 4. Through real-time feedback of the control host, adjust the position of the trolley 1 to ensure that the trolley 2 track is aligned with the container to be hoisted.

[0060] Thirdly, trolley 2 accurate alignment;

[0061] Trolley 2 start: After the trolley 2 track is aligned with the container, the trolley drive mechanism 8 receives the control instructions and starts the trolley 2 walking device. The trolley 2 moves left and right along the track, and adjusts the position according to the real-time feedback of the control host to ensure that the spreader 7 can accurately align with the locking hole of the container.

[0062] Fourthly, spreader 7 winding and preparation for hoisting;

[0063] Spreader 7 winding: according to a specific winding method, connect eight steel wires (L1-L8) correctly between the pulley mechanism of the spreader 7 and the drum 5. The specific winding method is: the outgoing end of L1 is connected with the outgoing end of L3 through the left pulley mechanism 75; the outgoing end of L2 is connected with the outgoing end of L5 through the middle two pulley mechanism 74; the outgoing end of L4 is connected with the outgoing end of L7 through the middle two pulley mechanism 74; the outgoing end of L6 is connected with the outgoing end of L8 through the right pulley mechanism 72. L1 to L8 are also guided through the fixed pulleys (C1-C12) on the top frame 12 to ensure that the steel wires are wound according to the predetermined path. After ensuring that all steel wire connections are correct, pre-tighten the steel wires through the winch 6 to check the state of the spreader 7 and the steel wires.

[0064] Fifthly, hoisting operation;

[0065] Spreader 7 lifting: the winch 6 drives the drum 5 to rotate forward or reverse according to the control instructions, controls the lifting of the spreader 7. When the drum 5 rotates forward, the steel wire is wound on the drum 5, and the spreader 7 rises; when it rotates reversely, the steel wire is released, and the spreader 7 descends.

[0066] Lifting device 7 locks the container: under the control of the control system, the lifting device 7 slowly descends, and the locking jaw of the lifting beam 71 is connected with the locking hole of the container and locked. The winch 6 continues to work, and the lifting device 7 and the container are lifted to a certain height by rotating the drum 5. The cart 1 and the trolley 2 work cooperatively, and according to the control instruction, the container is accurately moved and lifted to the designated position.

[0067] Six, place the container;

[0068] Container positioning: after reaching the designated position, the cart 1 and the trolley 2 are accurately adjusted again to ensure that the container can be placed stably. The lifting device 7 releases the container: the control winch 6 makes the lifting device 7 slowly descend, and the locking jaw of the lifting beam 71 is separated from the locking hole of the container, and the container is released. The lifting device 7 returns to the initial position under the control of the winch 6, and is ready for the next lifting operation.

[0069] Seven, end stage;

[0070] After completing the lifting task, all parts are reset to the initial state, the control host is closed, and the system is maintained and checked.

[0071] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A shipboard container hoisting system, characterized by, It comprises: A large track laid on the hull; A trolley mounted on the large track, the trolley being a gantry structure comprising a support beam and a top frame; the support beam is connected to the large track through rollers below; A trolley driving mechanism comprising a motor and a speed reducer for driving the trolley to move along the large track; A trolley is provided on the top frame, the trolley is mounted on the trolley track of the trolley, and the trolley moves laterally through the trolley track; the trolley track is provided with a trolley driving mechanism for driving the trolley to move laterally on the track; A lifting device is provided with a lifting beam for connecting a container, and a pulley mechanism is provided on the lifting beam, the pulley mechanism comprising a right pulley mechanism, a middle pulley mechanism, a middle pulley mechanism and a left pulley mechanism; A winch and a winding drum are also mounted on the top frame, the winding drum is connected to the pulley mechanism of the lifting device through a steel wire rope, and drives the lifting device to lift; The winch is in transmission connection with the winding drum, drives the winding drum to rotate, winds and releases the steel wire rope, and controls the height of the lifting device; Eight steel wire ropes are provided between the winding drum and the lifting device, and are respectively marked as L1, L2, …, L8, wherein L1, L2, L3 and L4 are connected to the winding drum from the left side of the winding drum, and the winding mode is from above the winding drum; L5, L6, L7 and L8 are connected to the winding drum from the right side of the winding drum, and the winding mode is from below the winding drum; wherein: The leading end of L1 is connected with the leading end of L3 through the left pulley mechanism; The leading end of L2 is connected with the leading end of L5 through the middle pulley mechanism; The leading end of L4 is connected with the leading end of L7 through the middle pulley mechanism; The leading end of L6 is connected with the leading end of L8 through the right pulley mechanism.

2. A shipboard container hoisting system according to claim 1, characterized in that: Six fixed pulleys are sequentially provided on the top frame of the left side of the winding drum, and are respectively marked as C1, C2, …, C6; six fixed pulleys are sequentially provided on the top frame of the right side of the winding drum, and are respectively marked as C7, C8, …, C12, wherein: L1 is connected with C2 and C1 in sequence; L2 is connected with C3; L3 is connected with C4 and C6 in sequence; L4 is connected with C5; L5 is connected with C8; L6 is connected with C9 and C7 in sequence; L7 is connected with C10; L8 is connected with C11 and C12 in sequence.

3. A shipboard container hoisting system according to claim 2, characterised in that: C1 is arranged along the plane of X axis and Z axis; C2 is arranged along the plane of X axis and Y axis; C3 is arranged along the plane of Y axis and Z axis; the included angle between C4 and the plane of X axis and Y axis is α; C5 is arranged along the plane of Y axis and Z axis; C6 is arranged along the plane of Y axis and Z axis; C7 is arranged along the plane of X axis and Z axis; C8 is arranged along the plane of Y axis and Z axis; the included angle between C9 and the plane of X axis and Y axis is β; C10 is arranged along the plane of Y axis and Z axis; the included angle between C11 and the plane of X axis and Y axis is γ; C12 is arranged along the plane of X axis and Z axis.

4. A shipboard container hoisting system according to claim 3, characterised in that: 0≤α≤30°, 0≤β≤30°, 0≤γ≤30°.

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