A connecting spreader for a ship lift platform

Abstract

This utility model discloses a connecting lifting device for a ship lift platform, relating to the field of marine machinery and equipment. It includes a lifting device body with mounting boxes connected to both ends. Each mounting box contains an adjustment mechanism, which includes a main drive component and a passive drive component. The main drive component is connected to the output end of a drive motor, and its output end is connected to or disconnected from the passive drive component via a sliding component. When the output end of the main drive component is connected to the passive drive component, the main drive component drives the passive drive component to lift the load-bearing plate. This utility model, by providing a disengaging sliding component between the main drive component and the passive drive component, allows the tilt state of the load-bearing plate to be adjusted synchronously or independently at both ends of the lifting device body. This ensures that the load-bearing plate quickly reaches and maintains balance in complex environments such as wind and waves, significantly improving the safety, efficiency, and automation of lifting ultra-large load-bearing plates.

Description

Technical Field

[0001] This utility model relates to the field of marine machinery and equipment, specifically to a connecting lifting device for a ship lift platform. Background Technology

[0002] As a large-scale water conservancy engineering facility that enables the lifting, transfer, and maintenance of ships, the ship lift platform, its core component, plays a crucial role in directly supporting the ships. Existing ship lift platforms are typically constructed by splicing together multiple large support plates and their auxiliary structures. During the construction of a ship lift platform, the transportation and installation of the support plates are critical steps.

[0003] Currently, the transfer of large load-bearing plates from land to the ship lift platform generally adopts a combination of "SPMT" modular transport vehicles for land transport, floating crane vessel hoisting and transfer, and barge-assisted transport. Specifically, the load-bearing plates are first transported at low speed to the dock along a specific path using 2×26 axle SPMT modular transport vehicles. Then, a floating crane vessel equipped with a special lifting system hoists the load-bearing plates onto a barge. Finally, the barge, with the assistance of the floating crane, hoists the load-bearing plates to the designated position on the ship lift platform. During this process, to ensure the stability of the load-bearing plates during hoisting and transport, two methods are typically used for balancing and adjustment: adjusting the length of the steel wire rope with shackles or using counterweight ballast.

[0004] However, existing load-bearing plate balancing adjustment technologies have significant drawbacks: First, when using shackles to adjust the wire rope length, the calculation of the load-bearing plate's tilt requires comprehensive consideration of complex mechanical factors such as the plate's shape, weight distribution, and actual stress, making precise calculation extremely difficult and prone to adjustment deviations. Furthermore, frequent shackle adjustments are not only time-consuming but also exacerbate shackle wear, reducing safety. Simultaneously, in the face of load-bearing plate swaying caused by sea waves, the shackle adjustment method cannot respond quickly enough to eliminate the safety hazards caused by the load-bearing plate's imbalance. Second, the counterweight ballast method requires precise calculation of the load-bearing plate's center of gravity offset to determine the counterweight weight and placement. This is not only complex to operate, reliant on professional technicians and complex calculations, but also increases the load on the lifting equipment by adding counterweight, posing a risk of exceeding the floating crane's safe lifting range. Utility Model Content

[0005] The purpose of this utility model is to provide a connecting lifting device for a ship lift platform. This device, by setting a sliding component that can be disengaged and engaged between the main drive component and the passive drive component, allows the two ends of the lifting device body to adjust the tilt state of the bearing plate synchronously or independently, ensuring that the bearing plate can quickly reach and maintain balance in complex environments such as wind and waves, and significantly improving the safety, efficiency and automation of lifting ultra-large bearing plates.

[0006] This utility model is achieved through the following technical solution: A connecting spreader for a ship lift platform includes a spreader body, with mounting boxes connected to both ends of the spreader body, and each mounting box is provided with an adjustment mechanism. The adjustment mechanism includes a main drive component and a passive drive component. The main drive component is connected to the output end of the drive motor. The output end of the main drive component is connected to or disconnected from the passive drive component through a sliding component. When the output end of the main drive component is connected to the passive drive component, the main drive component drives the passive drive component to lift the bearing plate.

[0007] In this design, the mounting boxes at both ends of the spreader body provide integrated installation space for the adjustment mechanism. The connection between the main drive component and the drive motor enables active power input and transmits power to the passive drive component. The sliding component, through a disengageable connection, allows the power of the main drive component to be transmitted to the passive drive component when needed, thereby driving the sling to extend and retract to adjust the level of the load-bearing plate. This design completely changes the inefficient and high-risk operation mode of traditional manual adjustment of shackles or counterweight ballast. It enables the spreader to respond in real time to the tilt state of the load-bearing plate during the lifting process through precise control of the drive motor and disengagement of the sliding component, and automatically complete the synchronous or independent adjustment of the sling length. This ensures that the load-bearing plate can quickly reach and maintain balance in complex environments such as wind and waves, significantly improving the safety, efficiency and automation of lifting ultra-large load-bearing plates.

[0008] As a further embodiment of the connecting spreader, multiple sets of passive drive components are provided, and each set of passive drive components is connected to the output end of the main drive component through a sliding component.

[0009] In this solution, a single main drive component can simultaneously control the actions of multiple passive components. It can achieve coordinated adjustment of multiple slings through the synchronous connection of sliding components, ensuring that the load-bearing plate is subjected to uniform force and has a stable posture during lifting. It can also independently drive specific passive components by disconnecting some sliding component connections, precisely adjusting the length of local slings to correct the tilt or uneven load of the load-bearing plate. This allows the lifting device to dynamically distribute power output according to the actual weight distribution of the load-bearing plate, the lifting height, and the external environment, achieving more precise balance control in dual-point or multi-point lifting scenarios.

[0010] As a further embodiment of the connecting lifting device, the main drive assembly includes a power shaft, a first gear, and a second gear, and the passive drive assembly includes a transmission shaft; One end of the power shaft is connected to the output end of the drive motor, and the other end of the power shaft is connected to the second gear; The first gear is sleeved on the drive shaft and can rotate around the drive shaft. One end of the first gear is provided with a first engagement part that matches the sliding component. The sliding component is sleeved on the drive shaft, the sliding component can slide along the drive shaft, and the drive shaft is provided with a second engagement part that matches the sliding component; The second gear meshes with the first gear, and when the sliding assembly is connected to the first joint and the second joint respectively, the transmission shaft drives the bearing plate to be lifted.

[0011] In this design, the power shaft acts as the link between the drive motor and the transmission gears, transmitting the torque output by the motor to the second gear. The gear meshing then drives the first gear, which is mounted on the transmission shaft, to rotate, forming the basic power link. The sliding component's slidable design on the transmission shaft allows for selective connection with both the first and second engagement parts, enabling power on / off control. When the sliding component engages with both, the rotation of the first gear is transmitted to the transmission shaft via the sliding component, causing the transmission shaft to drive the rollers to raise and lower the slings to lift the load-bearing plate. Conversely, the power transmission is cut off, achieving independent locking of the transmission shaft. This design ensures the stability and accuracy of power transmission through gear drive while providing the system with flexible adjustment capabilities through the clutch mechanism of the sliding component. The same drive motor can selectively drive one or more transmission shafts as needed, enabling synchronous or independent adjustment of multiple slings and meeting the complex control requirements for attitude adjustment and center of gravity balance during load-bearing plate lifting.

[0012] As a further solution for connecting the lifting device, in order to further optimize the power transmission and adjustment mechanism of the connecting lifting device, the transmission shaft is fixedly sleeved with a second synchronous gear, and the side end of the first gear is correspondingly provided with a first synchronous gear; The sliding component includes a synchronous internal gear, which is splined to the first synchronous gear and the second synchronous gear. When the synchronous internal gear reciprocates along the transmission shaft, it engages or disengages with the first synchronous gear / second synchronous gear.

[0013] In this scheme, by setting a second synchronous gear and a first synchronous gear on the drive shaft and the first gear respectively, and specifying the sliding component as a synchronous internal gear, a more precise and efficient transmission control is achieved by using a spline connection. The spline connection between the synchronous internal gear and the two synchronous gears allows for precise control of the connection and disconnection of power between the first gear and the drive shaft when the synchronous internal gear reciprocates along the drive shaft.

[0014] As a further embodiment of the connecting lifting device, the sliding assembly also includes an electromagnetic actuation structure, which includes an electromagnet fixed to the drive shaft and a magnet disposed on the synchronous internal gear. When the electromagnet is energized, it generates a magnetic force with the magnet to drive the synchronous internal gear to slide.

[0015] In this solution, an electromagnetic propulsion structure is introduced into the sliding assembly to achieve automated control of the sliding of the synchronous internal gear. The electromagnetic propulsion structure consists of an electromagnet fixed to the drive shaft and a magnet set on the synchronous internal gear. The magnetic force generated by energizing the electromagnet drives the sliding of the synchronous internal gear, converting electricity into mechanical displacement. During the lifting of the ship lift platform's support plate, when the system detects an imbalance in the support plate requiring adjustment, it can quickly energize the electromagnet. The electromagnet interacts with the magnet on the synchronous internal gear, and the resulting magnetic force pushes the synchronous internal gear to slide along the drive shaft, thereby quickly achieving engagement or disengagement with different synchronous gears, precisely controlling power transmission, and enabling each sling to be adjusted synchronously or independently according to the actual situation.

[0016] As a further solution for connecting the lifting device, to further enhance the adaptability of the lifting device to complex working environments, the drive shaft is equipped with a brake, which is an electromagnetic brake or a hydraulic brake, to limit the rotation of the drive shaft.

[0017] As a further solution for the connecting lifting device, in order to enable the connecting lifting device to achieve stable load transfer and attitude control within a limited space, the outer end of the mounting box is bent downward to form a curved section, and multiple through holes are opened on the bottom side of the curved section. The passive drive component includes a roller around which a sling is wound, and the sling extends through the through holes and is connected to a bearing plate.

[0018] As a further embodiment of the connecting lifting device, the lifting device body also includes a steel truss. The mounting boxes are symmetrically arranged at both ends of the steel truss. Lifting lugs are respectively provided at both ends of the upper side of the steel truss. The lifting lugs are connected to the lifting structure of the floating crane by steel wire ropes, providing strong support for the entire lifting device and ensuring that the lifting device will not deform or be damaged due to excessive force when lifting ultra-large load-bearing plates.

[0019] As a further solution for connecting the lifting device, to create a convenient maintenance channel for the connecting lifting device, the installation box is provided with a maintenance opening. The maintenance opening is connected to a sealing cover plate by multiple bolt groups, which significantly reduces operation and maintenance costs while ensuring the sealing and safety of the equipment.

[0020] As a further solution for connecting the lifting device, to avoid the lag and error of traditional manual adjustment, the adjustment mechanism also includes a control component. The control component adjusts the connection or disconnection between the sliding component and the passive drive component, so that all the passive drive components move synchronously, or drive any one of the passive drive components to move individually. This not only improves the efficiency of lifting operations, but also enhances the safety of operations, effectively reduces the safety risks caused by the imbalance of the bearing plate, and enables the connecting lifting device to better adapt to complex and changing lifting conditions.

[0021] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. This utility model can automatically adjust the length of one or more sets of slings through the adjustment mechanism, making the balance adjustment of the bearing plate more diversified and automated; 2. This utility model uses a double-sling double-point connection in conjunction with a drive shaft brake to directly adjust the center of gravity of the bearing plate by changing the length of the slings, eliminating the need for external counterweights and thus eliminating the risk of counterweight imbalance. 3. This utility model allows for the independent disassembly and replacement of internal components in a short time through the maintenance opening of the mounting box, facilitating the maintenance and repair of the automatic adjustment mechanism. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the transmission component structure of this utility model.

[0023] The attached diagram shows the markings and corresponding component names: 1- Mounting box, 2- Wire rope, 3- Steel truss, 4- Sealing cover, 5- Lifting sling, 6- Lifting lug, 7- Drive motor, 8- Transmission shaft, 9- Power shaft, 10- Electromagnet, 11- Magnet, 12- Synchronous internal gear, 13- Roller, 14- Brake, 15- Second gear, 16- First gear, 17- First synchronous gear, 18- Second synchronous gear. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0025] Example This embodiment provides a connecting lifting device for a ship lift platform, such as... Figures 1-2 As shown, the lifting device includes a lifting frame body, which includes a steel truss 3. The steel truss 3 has a robust structure that can withstand various loads from the bearing plate and during the lifting process, providing stable support for the entire lifting device. Connecting lugs 6 are stacked at both ends of the upper side of the steel truss 3. These lugs are connected to the lifting structure of the floating crane vessel through steel wire ropes 2, providing strong support for the entire lifting device.

[0026] Meanwhile, installation boxes 1 are connected to both ends of the steel truss 3. The outer end of the installation box 1 is bent downward to form a curved part. Multiple through holes are opened on the bottom side of the curved part. These through holes are used for the slings 5 ​​to pass through and are the channels for the slings 5 ​​to connect with the bearing plate. Each installation box 1 is provided with a maintenance opening. The maintenance opening is detachably connected to a sealing cover 4 by multiple bolt groups. This makes it convenient for staff to open the sealing cover 4 to inspect, repair and maintain the equipment inside the installation box 1. At the same time, during non-maintenance periods, the sealing cover can ensure the stability of the internal environment of the installation box and prevent external dust, moisture and other impurities from entering and affecting the performance of the equipment.

[0027] Please refer to Figure 2 As shown, each of the above-mentioned mounting boxes 1 is equipped with an adjustment mechanism, and each adjustment mechanism includes a main drive component, a passive drive component, a sliding component, and a control component.

[0028] The main drive assembly includes a power shaft 9, a first gear 16, and a second gear 15. One end of the power shaft 9 is connected to the output end of the drive motor 7, and the other end is connected to the second gear 15. The passive drive assembly includes a transmission shaft 8 and a roller 13 connected to the output end of the transmission shaft 8. The first gear 16 is sleeved on the transmission shaft 8 and can rotate around it. One end of the first gear 16 has a first synchronous gear 17 that matches the sliding assembly. The transmission shaft 8 is also provided with a second synchronous gear 18 that matches the sliding assembly. The sliding assembly includes a synchronous inner gear 12 and an electromagnetic drive structure. Gear 12 is splinedly connected to the second synchronous gear 18 on the transmission shaft 8 and the first synchronous gear 17 on the side of the first gear 15. The synchronous internal gear 12 is sleeved on the transmission shaft 8 and can reciprocate along the transmission shaft 18 under the action of the electromagnetic drive structure, so as to engage or disengage with the two synchronous gears. When the synchronous internal gear 12 engages with the first synchronous gear 17 and the second synchronous gear 18 at the same time, the rotation of the first gear 16 is transmitted to the transmission shaft 8 through the synchronous internal gear 12, so that the transmission shaft 8 drives the roller 13 to raise and lower the sling 5 to lift the bearing plate.

[0029] The aforementioned electromagnetic propulsion structure consists of an electromagnet 10 fixed to the transmission shaft 8 and a magnet 11 disposed at the end of the synchronous internal gear 12. When the system detects that the bearing plate is unbalanced and needs adjustment, it can quickly energize the electromagnet 10. The electromagnet 10 interacts with the magnet 11 on the synchronous internal gear 12, and the generated magnetic force pushes the synchronous internal gear 12 to slide along the transmission shaft 8, thereby quickly achieving engagement or disengagement with different synchronous gears. Of course, in some other embodiments, the propulsion structure can also be a reciprocating hydraulic telescopic structure, a reciprocating pneumatic telescopic structure, or a reciprocating electric push rod structure.

[0030] In some embodiments, the passive drive components are configured in multiple groups, such as Figure 2As shown, in this embodiment, two sets of passive drive components are set up, located on both sides of the main drive component. Multiple sets of passive drive components are connected to the output end of the main drive component through sliding components. In this way, the two rollers 13 correspond to the two slings 5 ​​respectively, realizing a two-point connection at one end of the bearing plate, which greatly improves the stability during the lifting process and effectively avoids problems such as tilting and shaking of the bearing plate during lifting.

[0031] Meanwhile, the control component adjusts the connection or disconnection between the sliding component and the passive drive component by changing the polarity of the electromagnet 10 to adjust the engagement or disengagement of the synchronous internal gear 12 with the first synchronous gear 17 and the second synchronous gear 18, thereby enabling all passive drive components to operate synchronously or individually. When actually lifting a large load-bearing plate, if the load-bearing plate remains in a balanced state, the control component can adjust the sliding component to make all passive drive components operate synchronously, ensuring that the load-bearing plate rises or falls smoothly. If the load-bearing plate tilts, the control component can react quickly, individually driving specific passive drive components to operate, precisely adjusting the length of the corresponding sling, and quickly correcting the tilt of the load-bearing plate.

[0032] In this embodiment, to further enhance the adaptability of the lifting device to complex working environments, a brake 14 is connected to the drive shaft 8. The brake 14 is an electromagnetic brake or a hydraulic brake, used to limit the rotation of the drive shaft 8.

[0033] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A connecting spreader for a ship lift platform, characterized in that, Includes a lifting device body, both ends of which are connected to a mounting box (1), and each mounting box (1) is provided with an adjustment mechanism; The adjustment mechanism includes a main drive component and a passive drive component. The main drive component is connected to the output end of the drive motor (7). The output end of the main drive component is connected to or disconnected from the passive drive component through a sliding component. When the output end of the main drive component is connected to the passive drive component, the main drive component drives the passive drive component to lift the bearing plate.

2. A connecting lifting device for a ship lift platform according to claim 1, characterized in that, The passive drive component is provided in multiple groups, and each group of passive drive components is connected to the output end of the main drive component through a sliding component.

3. A connecting lifting device for a ship lift platform according to claim 2, characterized in that, The main drive assembly includes a power shaft (9), a first gear (16) and a second gear (15), and the passive drive assembly includes a transmission shaft (8). One end of the power shaft (9) is connected to the output end of the drive motor (7), and the other end of the power shaft (9) is connected to the second gear (15). The first gear (16) is sleeved on the transmission shaft (8) and can rotate around the transmission shaft (8). One side end of the first gear (16) is provided with a first engagement part that matches the sliding component. The sliding component is sleeved on the transmission shaft (8), the sliding component can slide along the transmission shaft (8), and the transmission shaft (8) is provided with a second engagement part that matches the sliding component; The second gear (15) meshes with the first gear (16). When the sliding assembly is connected to the first joint and the second joint respectively, the transmission shaft (8) drives the bearing plate to be lifted.

4. A connecting lifting device for a ship lift platform according to claim 3, characterized in that, The transmission shaft (8) is fixedly sleeved with a second synchronous gear (18), and the side end of the first gear (16) is correspondingly provided with a first synchronous gear (17). The sliding assembly includes a synchronous internal gear (12), which is splined to the first synchronous gear (17) and the second synchronous gear (18). When the synchronous internal gear (12) reciprocates along the transmission shaft (8), the synchronous internal gear (12) engages or disengages from the first synchronous gear (17) / second synchronous gear (18).

5. A connecting lifting device for a ship lift platform according to claim 4, characterized in that, The sliding assembly also includes an electromagnetic drive structure, which includes an electromagnet (10) fixed to the transmission shaft (8) and a magnet (11) disposed on the synchronous internal gear (12). When the electromagnet (10) is energized, it generates a magnetic force with the magnet (11) to drive the synchronous internal gear (12) to slide.

6. A connecting lifting device for a ship lift platform according to claim 4, characterized in that, The drive shaft (8) is equipped with a brake (14), which is an electromagnetic brake or a hydraulic brake, used to limit the rotation of the drive shaft (8).

7. A connecting lifting device for a ship lift platform according to any one of claims 1-6, characterized in that, The outer end of the mounting box (1) is bent downward to form a curved part. Multiple through holes are opened on the bottom side of the curved part. The passive drive assembly includes a roller (13) around which a sling (5) is wound. The sling (5) extends through the through holes and is connected to the bearing plate.

8. A connecting lifting device for a ship lift platform according to claim 7, characterized in that, The lifting device body also includes a steel truss (3), the installation box (1) is symmetrically arranged at both ends of the steel truss (3), and lifting lugs (6) are respectively provided at both ends of the upper side of the steel truss (3). The lifting lugs (6) are connected to the lifting structure of the floating crane ship through steel wire rope (2).

9. A connecting lifting device for a ship lift platform according to claim 7, characterized in that, The mounting box (1) has a maintenance opening, which is connected to a sealing cover plate (4) by multiple bolt groups.

10. A connecting lifting device for a ship lift platform according to claim 7, characterized in that, The adjustment mechanism further includes a control component, which adjusts the connection or disconnection between the sliding component and the passive drive component to make all the passive drive components operate synchronously, or to drive any one of the passive drive components to operate individually.

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