Anti-swing gunwale rotary folding and unfolding device

Abstract

An anti-swing gunwale rotary retracting and releasing device comprises a base arranged on a deck, a rotary support arranged on the base, a rotary driving device for driving the rotary support to rotate relative to the base, a suspension arm connected to the rotary support, a corner pulley arranged on the suspension arm and a head pulley arranged on the front portion of the extension direction of the suspension arm. The anti-swing cylinder is connected to the head pulley, and the hydraulic winch is arranged on the suspension arm. According to the utility model, stable, rapid and safe ship retracting and releasing operation under a high sea condition is realized.

Description

Technical Field

[0001] The utility model belongs to the field of boat folding and launching, and in particular relates to an anti-swaying side boat rotating folding and launching device. Background Art

[0002] With the rapid development of the global shipping industry and the increasing complexity of maritime activities, various special-purpose ships have put forward higher requirements on the launching and retrieving capabilities of supporting work boats. Especially when performing scientific research, maritime rescue, offshore oil and gas development and other tasks, work boats need to be able to be deployed and recovered quickly and safely in severe sea conditions (such as sea conditions reaching level 4 and above), which poses unprecedented challenges to boat launching and retrieving technology.

[0003] The retrieval and launching of surface boats is a basic and critical operation in marine operations. It not only affects the safe transfer of personnel and materials, but is also directly related to the marine emergency response speed and mission execution capabilities. Traditional methods of launching and retrieving small boats rely on fixed cranes, rail pulley systems or simple boom devices. These methods are relatively easy to operate on calm seas, but in high sea conditions (such as strong winds and waves, strong surge conditions), the retrieval and launching operations become extremely difficult and dangerous due to the violent shaking of the ship and the instability of the waves.

[0004] Traditional launching and retracting devices have difficulty maintaining the balance of boats when facing the impact of large waves, which can easily cause violent shaking and increase operational risks. Existing wave compensation technologies are mostly concentrated on large cranes or offshore platforms. For the launching and retracting devices of small work boats, the constant tension control and dynamic adjustment capabilities are insufficient, and it is difficult to effectively alleviate the tension fluctuations caused by waves. The launching and retracting devices are not responsive enough to environmental changes, lack intelligent prediction and adjustment strategies, and operations rely on manual judgment, which reduces work efficiency and safety. Most device designs focus on operational performance in still water, and do not fully consider the special needs of side launch and retracting, such as space limitations, deck interference and other factors. Utility Model Content

[0005] The utility model aims to provide a sway-proof side boat rotating and launching device to solve the technical problems of safety and efficiency of boat launching and launching under high sea conditions.

[0006] In order to achieve the above-mentioned purpose, the specific technical scheme of the anti-sway side boat rotating and retracting device of the utility model is as follows:

[0007] An anti-sway side boat rotating and releasing device comprises a base arranged on a deck, a rotating support arranged on the base, a rotating driving device driving the rotating support to rotate relative to the base, a boom connected to the rotating support, an angle pulley arranged on the boom, a head pulley arranged at the front of the boom in the extension direction, an anti-sway cylinder connected to the head pulley, a hydraulic winch arranged on the boom, and a hydraulic control system;

[0008] The head pulley is connected to the boom via a first rotating shaft, the rotating surface of the head pulley relative to the boom is perpendicular to the first rotating shaft, a first oil cylinder is connected between the head pulley and the boom, and the first oil cylinder buffers the swing of the head pulley relative to the boom;

[0009] The anti-sway cylinder is connected to the head pulley via a second rotating shaft, the rotating surface of the anti-sway cylinder relative to the head pulley is perpendicular to the second rotating shaft, a second oil cylinder is connected between the anti-sway cylinder and the head pulley, and the second oil cylinder buffers the swing of the anti-sway cylinder relative to the head pulley;

[0010] The rotating support comprises a fixed part and a rotating part, the boom is connected to the rotating part, the fixed part is connected to the base, and the rotating part rotates relative to the fixed part to realize the rotation of the boom relative to the base;

[0011] The sling of the hydraulic winch passes through the corner pulleys in sequence along the boom, and the head pulley and the anti-sway cylinder are connected to the boat to be launched or retracted;

[0012] The hydraulic control system provides electrical control and hydraulic power for the retracting and extending device.

[0013] As a further improvement of the present utility model, the boom is connected to the rotating part through the boom base, the rotation drive device is arranged on the boom base, the rotating support is a hollow structure, the hollow inner wall of the fixed part is an internal gear structure, the driving end of the rotation drive device passes through the boom base and extends into the fixed part, the driving end is an external gear structure meshingly connected with the internal gear structure, and the rotation drive device drives the driving end to rotate, thereby driving the boom base to rotate relative to the fixed end.

[0014] As a further improvement of the present invention, the rotating part is rotatably hooked onto the fixing part.

[0015] As a further improvement of the present utility model, the internal gear structure is an involute cylindrical gear.

[0016] As a further improvement of the present invention, the extension and retraction directions of the first oil cylinder and the second oil cylinder are perpendicular to each other.

[0017] As a further improvement of the utility model, the corner pulley is connected to the boom through a third oil cylinder, the cylinder body of the third oil cylinder is fixed on the boom, and the corner pulley is connected to the piston rod of the third oil cylinder; the extension and retraction of the piston rod realizes the buffering of the sling on the corner pulley.

[0018] As a further improvement of the utility model, the third oil cylinder is connected to an accumulator, and the accumulator is an airbag accumulator, and the airbag is filled with inert gas. After the hydraulic oil in the third oil cylinder enters the accumulator, it squeezes the inert gas to achieve a buffering effect.

[0019] Beneficial effects:

[0020] The dual anti-sway design of the head pulley and the anti-sway cylinder, in conjunction with the first and second oil cylinders, achieves effective buffering and control of the swing in each link during the boat retrieval and deployment process. This design can significantly reduce the lateral and longitudinal sway caused by waves, ensure the boat's posture is stable during the retrieval and deployment process, and greatly improve the safety of the operation.

[0021] The integrated hydraulic control system not only provides power for the winch, but also realizes precise control of the entire retractable device. The coordinated work of the hydraulic winch and the sling ensures the smoothness of the lifting and lowering movements, while the internal and external gear meshing structure adopted by the rotary drive device ensures the stability and reliability of the boom rotation, allowing the entire device to quickly respond to operating instructions and achieve precise positioning.

[0022] The hollow structure of the rotating support and the design of the internal and external gears not only save installation space, but also make the rotation of the boom more flexible and free, so that the side can be efficiently retracted and deployed without occupying too much deck area. In addition, the connection between the boom base and the rotating part further enhances the overall stability of the device and the adjustability of the operating range.

[0023] The combination of the third cylinder and the angle pulley, as well as the additional accumulator system, provides an extra buffer layer for the sling, effectively absorbing the instantaneous excessive force that may be generated by wave impact or improper operation, protecting the boat and equipment from damage and extending their service life.

[0024] To sum up, the anti-sway side boat rotating and launching device of the utility model realizes stable, fast and safe boat launching and launching operations under high sea conditions through innovative mechanical design and efficient hydraulic control system, provides advanced technical support for the shipbuilding industry, especially special operation vessels, and has significant technical advantages and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic structural diagram of an anti-sway side boat rotating and retracting device of the utility model;

[0026] Figure 2 It is a side view of a rotating and retracting device for a side boat to prevent sway;

[0027] Figure 3 It is a schematic diagram of the connection between the head pulley and the anti-sway cylinder;

[0028] Figure 4 for Figure 1 A detailed enlarged view of part A;

[0029] Explanation of marks in the figure: 10, base; 20, rotating support; 21, fixed part; 22, rotating part; 23, internal gear structure; 30, rotating drive device; 40, boom; 41, boom base; 50, angle pulley; 51, third cylinder; 52, accumulator; 60, head pulley; 61, first cylinder; 70, anti-sway cylinder; 71, second cylinder; 80, hydraulic winch; 81, sling; 90, hydraulic control system. DETAILED DESCRIPTION

[0030] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0031] Implementation example:

[0032] like Figure 1-2 The illustrated embodiment shows a sway-proof side boat rotating and retracting device, wherein the base 10 is the bearing component of the retracting and retracting device, the bottom of which is welded to the ship deck, and the upper part is connected to the rotating support 20 by bolts and nuts. The boom 40 is the main force-bearing component of the retracting and retracting device, and the boom base 41 is provided with a rotating drive device 30 and a mounting interface of the rotating support 20, which is mounted on the upper end of the rotating support 20 through a mounting structure. The corner pulley 50 is arranged at the corner of the boom 40, and the front end of the boom 40 is provided with a head pulley, and an anti-sway cylinder connected to the head pulley. The hydraulic winch 80 is arranged on the side of the vertical area of ​​the boom 40 near the boom base 41, and the sling 81 passes through the corner pulley 50, the head pulley 60, and the anti-sway cylinder 70 along the boom 40 in sequence and then is connected to the boat to be retracted and retracted.

[0033] like Figure 3As shown, the head pulley 60 is connected to the boom 40 through a first rotating shaft (not shown in the figure), the cylinder body of the first oil cylinder 61 is fixed on the boom 40, the piston rod is connected to the head pulley 60, and the extension and contraction of the piston rod drives the head pulley 60 to swing around the first rotating shaft, and the swing amplitude is determined by the extension and contraction degree of the first oil cylinder 61. The anti-sway cylinder 70 is connected to the head pulley 60 through a second rotating shaft (not shown in the figure), the cylinder body of the second oil cylinder 71 is fixed on the boom 40, the piston rod is connected to the anti-sway cylinder 70, and the extension and contraction of the piston rod drives the anti-sway cylinder 70 to swing around the second rotating shaft, and the swing amplitude is determined by the extension and contraction degree of the second oil cylinder 71. The extension and contraction directions of the first oil cylinder 61 and the second oil cylinder 71 are perpendicular to each other, and the swing of the sling is limited in four degrees of freedom, front, back, left, and right. No matter how much the boat shakes, the wire rope will not jump out of the pulley, which prevents the occurrence of wheel-off accidents, ensures the personal safety of the passengers, and reduces the shaking of the boat during the folding and releasing process.

[0034] like Figure 4 As shown, the fixed part 21 is fixedly connected to the base 10 by bolts, the rotating part 22 is rotatably hooked on the fixed part 21, and the upper end surface of the rotating part 22 is connected to the boom base 41 by bolts. The driving end of the rotating drive device 30 (not shown in the figure) passes through the boom base 41 and extends into the rotating support 20. The rotating support 20 is a hollow structure, and the inner wall of the fixed part 21 is a surrounding internal tooth structure 23, which is provided with an involute cylindrical gear. The driving end is an external gear structure, which extends into the fixed part 21 and meshes with the internal gear. In this embodiment, the rotating drive device 30 is hydraulically driven, converting hydraulic energy into mechanical energy, which is finally output by the external gear at the driving end, rotates along the internal gear, and drives the boom to rotate relative to the base.

[0035] The involute cylindrical teeth on the inner wall of the fixed part 21 are large gears, and the driving end of the rotary drive device 30 is a small gear, and the two gears perform internal meshing motion. The hydraulic oil drives the small gear to rotate at a certain torque and speed. Since the large gear is fixed to the base 10, the small gear will rotate around the large gear, that is, the rotary drive device 30 drives the boom 40 to rotate. Since the boom 40 and the rotating part 22 of the rotary support 20 are fixed, the rolling body between the fixed part 21 and the rotating part 22 can convert the sliding friction of the boom 40 during the rotary motion into rolling friction, which greatly reduces the rotary resistance. Therefore, the driving torque required by the hydraulic rotary device 30 is not large, and the appearance is small and compact.

[0036] The corner pulley 50 is connected to the boom 40 through the third oil cylinder 51. The cylinder body of the third oil cylinder 51 is fixed on the boom 40. The corner pulley 50 is connected to the piston rod of the third oil cylinder 51. The extension and retraction of the piston rod realizes the buffering of the sling on the corner pulley 50. At the same time, the third oil cylinder 51 is connected to the accumulator 52. The accumulator 52 is an airbag accumulator filled with nitrogen. The hydraulic oil in the third oil cylinder 51 enters the accumulator 52 and squeezes the inert gas to achieve a buffering effect, reduce the impact force on the sling, extend the service life of the sling, reduce the impact on the boat, and maintain the stability of the process of folding and releasing the boat.

[0037] In this embodiment, the hydraulic winch 80 is a wave compensation hydraulic winch, which is divided into normal lifting and lowering conditions and wave compensation conditions. The lifting and lowering conditions realize the retraction and release of the sling by the forward and reverse rotation of the winch, thereby realizing the retraction and release of the boat. The wave compensation condition is the constant tension condition of the sling. When the waves surge, the boat is lifted by the waves, the sling is loose, the force on the winch is less than the set wave compensation tension, and the hydraulic oil drives the winch to rotate forward to tighten the sling; when the waves sink, the boat leaves the water surface, and all the weight acts on the winch. The force on the winch is greater than the set wave compensation tension, the hydraulic oil overflows, and the winch reverses under the action of the boat's own weight to lower the boat. Under the constant tension condition, the sling always tightens the boat with a constant tension, maintaining the stability of the boat on the water surface, facilitating operations such as unhooking, and also reducing the risk of collision between the boat and other equipment.

[0038] The retraction and extension of the utility model are driven and controlled by a hydraulic control system 90. The power source of the hydraulic control system 90 is a hydraulic pump, which is driven by an electric motor. The hydraulic pump delivers hydraulic oil with a certain pressure and flow rate to each control valve. By manipulating the direction and opening size of the control valve, the movement direction and speed of the hydraulic actuator can be controlled, ultimately realizing the functions of lifting and lowering the boat, the boom driving the boat to be poured in and out, the mobile base driving the boom and then driving the boat to move forward and backward, anti-swaying, constant tension wave compensation, sling buffering, etc.

[0039] The retracting and releasing device of the utility model limits the swing of the sling 81 in four degrees of freedom, front, back, left and right, through the combination of the anti-sway cylinder 70 and the head pulley 60. No matter how much the boat shakes, the wire rope will not jump out of the pulley, which prevents the occurrence of wheel-off accidents, ensures the personal safety of the passengers, and reduces the shaking during the boat retracting and releasing process. The third oil cylinder 51 can reduce the impact force on the sling 81, extend the service life of the sling 81, reduce the impact received by the boat, and maintain the stability of the boat retracting and releasing process. The wave compensation hydraulic winch can realize the lifting and lowering of the boat, and has a constant tension working condition. Under the constant tension working condition, the sling always tightens the boat with a constant tension, maintains the stability of the boat on the water surface, facilitates the operation of unhooking and other operations, and also reduces the risk of collision between the boat and other equipment. The retracting and releasing device not only meets the needs of the side retracting and releasing, but also has the functions of anti-swaying, constant tension wave compensation, wire rope buffering, etc., so as to realize the safe, stable and fast retracting and releasing of the boat under high sea conditions.

[0040] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A sway-proof side boat rotating and retracting device, characterized in that: It includes a base arranged on the deck, a rotating support arranged on the base, a rotating driving device for driving the rotating support to rotate relative to the base, a boom connected to the rotating support, an angle pulley arranged on the boom, a head pulley arranged at the front of the boom in the extension direction, an anti-sway cylinder connected to the head pulley, a hydraulic winch arranged on the boom, and a hydraulic control system; The head pulley is connected to the boom via a first rotating shaft, the rotating surface of the head pulley relative to the boom is perpendicular to the first rotating shaft, a first oil cylinder is connected between the head pulley and the boom, and the first oil cylinder buffers the swing of the head pulley relative to the boom; The anti-sway cylinder is connected to the head pulley via a second rotating shaft, the rotating surface of the anti-sway cylinder relative to the head pulley is perpendicular to the second rotating shaft, a second oil cylinder is connected between the anti-sway cylinder and the head pulley, and the second oil cylinder buffers the swing of the anti-sway cylinder relative to the head pulley; The rotating support comprises a fixed part and a rotating part, the boom is connected to the rotating part, the fixed part is connected to the base, and the rotating part rotates relative to the fixed part to realize the rotation of the boom relative to the base; The sling of the hydraulic winch passes through the corner pulleys in sequence along the boom, and the head pulley and the anti-sway cylinder are connected to the boat to be launched or retracted; The hydraulic control system provides electrical control and hydraulic power for the retracting and extending device.

2. The anti-sway side boat rotating and retracting device according to claim 1, characterized in that: The boom is connected to the rotating part through the boom base, the rotation drive device is arranged on the boom base, the rotating support is a hollow structure, the hollow inner wall of the fixed part is an internal gear structure, the driving end of the rotation drive device passes through the boom base and extends into the fixed part, the driving end is an external gear structure meshing with the internal gear structure, and the rotation drive device drives the driving end to rotate, thereby driving the boom base to rotate relative to the fixed end.

3. The anti-sway side boat rotating and retracting device according to claim 1, characterized in that: The rotating part is rotatably hooked on the fixing part.

4. The anti-sway side boat rotating and retracting device according to claim 2, characterized in that: The internal gear structure is an involute cylindrical gear.

5. The anti-sway side boat rotating and retracting device according to claim 1, characterized in that: The extension and retraction directions of the first oil cylinder and the second oil cylinder are perpendicular to each other.

6. The anti-sway side boat rotating and retracting device according to claim 1, characterized in that: The corner pulley is connected to the boom via a third oil cylinder, a cylinder body of the third oil cylinder is fixed on the boom, and the corner pulley is connected to a piston rod of the third oil cylinder; the extension and retraction of the piston rod realizes the buffering of the sling on the corner pulley.

7. The anti-sway side boat rotating and retracting device according to claim 6, characterized in that: The third oil cylinder is connected to an accumulator, which is a bladder-type accumulator. The bladder is filled with inert gas. The hydraulic oil in the third oil cylinder enters the accumulator and squeezes the inert gas to achieve a buffering effect.

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