An anti-rolling and earthquake-resistant type of offshore crane

Abstract

The present invention discloses a roll and seismic reduction type offshore crane, which relates to the technical field of offshore cranes. The upper end of the frame column is provided with a frame swing wall, and a winch is arranged on the end side of the frame swing wall, and a main towing rope is arranged inside the winch; the lower end of the main towing rope is fixedly connected with a top plate, and a fixed plate is fixedly connected to the lower side of the edge of the top plate. For this roll and seismic reduction type offshore crane, when the device drives a heavy object to move upward and the heavy object shakes and deviates, it will squeeze the extrusion plate on the side. At this time, the distance between the extrusion plate and the side plate changes. The distance sensor can judge the moving distance of the heavy object. When the moving distance of the heavy object is large, it can be transmitted to the controller through data, so as to remind the staff that the heavy object deviates and there are potential safety hazards. The state of the auxiliary towing rope pulling the fixed plate is stressed outward, reducing the shaking when the single main towing rope hoists the heavy object, and the roll reduction effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore cranes, and is specifically applied to the construction of offshore platform base observation stations, and specifically relates to a sway-reducing and earthquake-resistant offshore crane. Background Art

[0002] When carrying out material handling, equipment hoisting, and water rescue operations at ports, shipyards, and water operation sites, a crane is required for auxiliary operations. A floating crane is one type of hoisting equipment. A floating crane is a jib crane that can be installed on a special floating ship. It can not only perform hoisting operations but also be used in occasions that require water-related operations such as ocean engineering and wharf handling. For example, when constructing an offshore platform base observation station, the required observation instruments and equipment can be stably hoisted by a floating crane to facilitate the subsequent construction of the offshore platform base observation station.

[0003] Prior Art 1 (Chinese Patent with Publication No.: CN117068974A, Publication Date: November 17, 2023): An offshore engineering hoisting machine. By setting an extended fixing component and using a connecting arm, it expands and extends around the moving base. Subsequently, through the electromagnets and negative pressure suction cups on the adsorption plate, it adsorbs to the deck and the ground, thereby expanding the contact area between the moving base and the ground and enhancing the installation stability of the crane on the ground. At the same time, when the counterweight ring and the lifting arm are in a fixed state, they are close to the ground and the deck, resulting in a lower center of gravity of the hoisting machine in the fixed state, further enhancing the installation stability of the hoisting machine on the ground and the deck.

[0004] There is also Prior Art 2 (Chinese Patent with Publication No.: CN220866966U, Publication Date: April 30, 2024): A polar sway-reducing offshore crane. In this polar sway-reducing offshore crane, by setting a connecting pipe and a water tank, since the weight of the lifted workpiece itself will drive the rotating base to sway, when the rotating base sways, the control box controls the electric push rods on the outer wall of the connecting pipe on the same side of the deflection to work. The electric push rods work to drive the gate plate to open and close the connecting pipe through the lifting push plate. Then, the servo motor works to drive the pump impeller to work to inject the counterweight water in the lower water tank into the higher water tank. By increasing the counterweight water in the higher water tank, a balance adjustment operation is performed on the sway-reducing frame.

[0005] Although Prior Art 1 and Prior Art 2 can meet various different marine construction requirements through their high adaptability, most of their cranes use lifting ropes to wind and hoist heavy objects. During hoisting operations, they cannot perform sway-reducing and earthquake-resistant treatments. When conducting offshore operations, they are easily affected by external wind and wave actions. When hoisting heavy objects, the heavy objects will shake to a certain extent, and there is a risk of the heavy objects falling, presenting certain potential safety hazards.

[0006] Therefore, we propose a roll and seismic reduction type marine crane to solve the problems raised above. Summary of the Invention

[0007] The purpose of the present invention is to provide a roll and seismic reduction type marine crane to solve the problems in the above-mentioned background technology. Most cranes on the current market lift heavy objects by winding ropes. During the lifting operation, they cannot be subjected to roll and seismic reduction treatment. When operating at sea, affected by external wind and wave actions, the heavy objects will shake to a certain extent during the lifting operation, and there is a risk of the heavy objects falling, which poses a certain safety hazard.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A roll and seismic reduction type marine crane, including a frame column, a frame swing wall is arranged at the upper end of the frame column, a winch is arranged at the end side of the frame swing wall, and a main towing rope is arranged inside the winch; the lower end of the main towing rope is fixedly connected to a top plate, and a fixed plate is fixedly connected to the lower side of the edge of the top plate. An electric motor is arranged on the upper surface of the fixed plate, and a limiting mechanism capable of clamping the heavy object is arranged between the output end of the electric motor and the fixed plate; an auxiliary towing rope is fixedly connected to the outer side of the main towing rope, the lower end of the auxiliary towing rope is fixedly connected to the upper surface of the fixed plate, and a roll reduction mechanism capable of abutting against the auxiliary towing rope is arranged between the side of the auxiliary towing rope and the fixed plate.

[0009] Preferably, side plates are fixedly connected to the lower edge sides of the fixed plate, air bags are fixedly connected to the inner sides of the side plates, extrusion plates are fixedly connected to the outer sides of the air bags, springs are fixedly connected between the extrusion plates and the side plates, and distance sensors are fixedly connected to the sides of the side plates.

[0010] Preferably, the extrusion plate and the side plate form an elastic structure through a spring. The height of the distance sensor is not lower than the lowest point of the lower end of the extrusion plate. The fixed plate is arranged in a "cross" shape when viewed from above.

[0011] Preferably, the limiting mechanism includes a first threaded rod, the inner end of the first threaded rod is fixedly connected to the output end of the electric motor, the outer end of the first threaded rod is nested and connected to the side of the fixed plate, a moving groove is opened on the fixed plate, a moving block is nested and connected inside the moving groove, a first threaded block is fixedly connected to the top end of the moving block, and the first threaded block is threadedly connected to the outer side of the first threaded rod. A side clamping plate is fixedly connected to the lower end of the moving block, a rotating rod is hinged to the side end of the first threaded block, a top pressing plate is hinged to the lower end of the rotating rod, a limiting block is fixedly connected to the side of the top pressing plate, a limiting groove is opened on the side of the side plate, and the limiting block is nested and connected inside the limiting groove.

[0012] Preferably, the moving groove is located directly below the first threaded rod. The moving block forms a sliding structure with the moving groove through a first threaded block, and the moving grooves are symmetrically distributed about the center point of the fixing plate.

[0013] Preferably, the rotating rod forms a rotating structure with the top pressing plate through a first threaded block, and the top pressing plate drives the limiting block to form a sliding structure with the limiting groove through the rotating rod. The rotating rods are symmetrically distributed left and right about the center point of the first threaded block.

[0014] Preferably, the anti-rolling mechanism includes an adjustment groove. The adjustment groove is opened on the fixing plate, and a second threaded rod is nested inside the adjustment groove. A gear is fixedly connected to the outer side of the second threaded rod. A toothed plate is fixedly connected to the upper surface of the top pressing plate. The second threaded rod is threadedly connected to a second threaded block, and the second threaded block is nested inside the adjustment groove. The upper end of the second threaded block is fixedly connected to an adjustment frame. An auxiliary wheel is rotatably connected to the side of the adjustment frame.

[0015] Preferably, the toothed plate and the gear are meshed with each other, and the second threaded block forms a rotating structure with the adjustment groove through the gear.

[0016] Preferably, the second threaded block forms a sliding structure with the adjustment groove through the second threaded rod. The auxiliary wheels are symmetrically distributed left and right about the center point of the adjustment frame, and the sides of the auxiliary wheels are in contact with the outer side of the auxiliary traction rope.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) Workers can place the heavy object on the placement plate. At this time, the placement plate can support the heavy object, and the extrusion plate can initially clamp and limit the side of the heavy object under the driving force of the elastic force of the spring;

[0019] When the device drives the heavy object to move upward and the heavy object shakes and deviates, it will squeeze the side extrusion plate. At this time, the distance between the extrusion plate and the side plate changes. The distance sensor can judge the moving distance of the heavy object. When the moving distance of the heavy object is large, it can be transmitted to the controller through data, so as to remind the worker that the heavy object has deviated and prompt that there is a safety hazard for the personnel;

[0020] (2) After the heavy object is placed on the placement plate, the motor can be started. At this time, the motor drives the first threaded rod to rotate. When the first threaded rod rotates, it will synchronously drive the first threaded block to move. The first threaded block drives the moving block to move in a limited way inside the moving groove. At this time, the side clamping plates can move towards each other under the driving action of the moving block, so as to clamp the side of the heavy object and reduce the possibility of the heavy object deviating;

[0021] During the process of the first threaded blocks moving towards each other under the driving action of the first threaded rod, the rotating rod will rotate synchronously. When the rotating rod rotates, it will synchronously push the top pressing plate to move downward. During the downward movement of the top pressing plate, it will drive the limiting block to slide inside the limiting groove, thereby further improving the stability of the downward movement of the top pressing plate, enabling the top pressing plate to better press and limit the surface of the heavy object, and improving the stability during the hoisting of the heavy object.

[0022] (3) While the top pressing plate moves downward, it will synchronously drive the toothed plate to move downward. At this time, the toothed plate will drive the gear meshed with it to rotate synchronously. The second threaded rod will rotate synchronously inside the adjustment groove under the driving action of the gear. As the second threaded rod rotates, the second threaded block will synchronously perform a limited movement inside the adjustment groove. The adjustment bracket will stably drive the auxiliary wheel to move under the driving action of the second threaded block, so that the auxiliary wheel will resist the auxiliary traction rope, thereby performing an opening treatment on the taut auxiliary traction rope, increasing the distance between the four groups of auxiliary traction ropes. At this time, the traction and pulling state of the auxiliary traction rope on the fixed plate is stressed outward, reducing the shaking during the hoisting operation of the heavy object by a single main traction rope, and having a good anti-sway effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 is a three-dimensional structural schematic diagram of the placing plate of the present invention;

[0025] Figure 3 is a three-dimensional structural schematic diagram of the side plate of the present invention;

[0026] Figure 4 is a three-dimensional structural schematic diagram of the top pressing plate of the present invention;

[0027] Figure 5 is a three-dimensional structural schematic diagram of the first threaded rod of the present invention;

[0028] Figure 6 is a three-dimensional structural schematic diagram of the rotating rod of the present invention;

[0029] Figure 7 is a three-dimensional structural schematic diagram of the toothed plate of the present invention;

[0030] Figure 8 is a three-dimensional structural schematic diagram of the adjustment bracket of the present invention;

[0031] Figure 9 is a three-dimensional structural schematic diagram of the gear of the present invention;

[0032] Figure 10 is a three-dimensional structural schematic diagram of the auxiliary traction rope of the present invention.

[0033] In the figure: 1, frame column; 2, winch; 3, main traction rope; 4, auxiliary traction rope; 5, frame swing arm; 6, placement plate; 7, side plate; 8, extrusion plate; 9, spring; 10, airbag; 11, distance sensor; 12, fixing plate; 13, side clamping plate; 14, limit groove; 15, limit block; 16, top pressing plate; 17, motor; 18, first threaded rod; 19, first threaded block; 20, moving groove; 21, moving block; 22, rotating rod; 23, second threaded block; 24, gear; 25, toothed plate; 26, adjustment groove; 27, second threaded rod; 28, top plate; 29, adjustment frame; 30, auxiliary wheel. Specific embodiments

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1: As Figures 1-3 shown in the technical solution, the present invention provides the following technical solution: a shock-reducing and earthquake-resistant offshore crane, discloses a distance sensor 11, and the offset of the heavy object can be monitored through the distance sensor 11: a frame column 1, a frame swing arm 5 is arranged at the upper end of the frame column 1, and a winch 2 is arranged at the end side of the frame swing arm 5, and a main traction rope 3 is arranged inside the winch 2; a side plate 7 is fixedly connected to the lower edge side of the fixing plate 12, an airbag 10 is fixedly connected to the inside of the side plate 7, an extrusion plate 8 is fixedly connected to the outside of the airbag 10, and a spring 9 is fixedly connected between the extrusion plate 8 and the side plate 7. A distance sensor 11 is fixedly connected to the side of the side plate 7. The extrusion plate 8 and the side plate 7 form an elastic structure through the spring 9. The height of the distance sensor 11 is not lower than the lowest point at the lower end of the extrusion plate 8. The fixing plate 12 is arranged in a "cross" shape when viewed from above.

[0036] The staff can place the heavy object on the placement plate 6. At this time, the placement plate 6 can support the heavy object. The extrusion plate 8 can perform preliminary clamping and limiting on the side of the heavy object under the driving of the elastic force of the spring 9; when the device drives the heavy object to move upward and the heavy object shakes and offsets, it will squeeze the side extrusion plate 8. At this time, the distance between the extrusion plate 8 and the side plate 7 changes. The distance sensor 11 can judge the moving distance of the heavy object. When the moving distance of the heavy object is large, it can be transmitted to the controller through data, so as to remind the staff that the heavy object has offset and remind that there is a safety hazard.

[0037] Embodiment 2: As Figure 2 、 Figures 4-6For the technical solution shown, the present invention provides the following technical solution: an anti-rolling and earthquake-resistant offshore crane, which discloses a limiting mechanism. The heavy object can be clamped and limited through the limiting mechanism: a top plate 28 is fixedly connected to the lower end of the main towing rope 3, and a fixing plate 12 is fixedly connected to the lower side of the edge of the top plate 28. A motor 17 is arranged on the upper surface of the fixing plate 12, and a limiting mechanism capable of clamping the heavy object is arranged between the output end of the motor 17 and the fixing plate 12; the limiting mechanism includes a first threaded rod 18, the inner end of the first threaded rod 18 is fixedly connected to the output end of the motor 17, and the outer end of the first threaded rod 18 is nested and connected to the side of the fixing plate 12. A moving groove 20 is formed in the fixing plate 12, and a moving block 21 is nested and connected inside the moving groove 20. The top end of the moving block 21 is fixedly connected with a first threaded block 19, and at the same time, the first threaded block 19 is threadedly connected to the outside of the first threaded rod 18. The lower end of the moving block 21 is fixedly connected with a side clamping plate 13. A rotating rod 22 is hinged to the edge end of the first threaded block 19, and the lower end of the rotating rod 22 is hinged to a top pressing plate 16. A limiting block 15 is fixedly connected to the side of the top pressing plate 16. A limiting groove 14 is formed in the side of the side plate 7, and the limiting block 15 is nested and connected inside the limiting groove 14. The moving groove 20 is located directly below the first threaded rod 18. The moving block 21 forms a sliding structure with the moving groove 20 through the first threaded block 19. The moving grooves 20 are symmetrically distributed about the center point of the fixing plate 12. The rotating rod 22 forms a rotating structure with the top pressing plate 16 through the first threaded block 19, and the top pressing plate 16 drives the limiting block 15 to form a sliding structure with the limiting groove 14 through the rotating rod 22. The rotating rods 22 are symmetrically distributed about the center point of the first threaded block 19 on the left and right.

[0038] After the heavy object is placed on the placing plate 6, the motor 17 can be started. At this time, the motor 17 drives the first threaded rod 18 to rotate. When the first threaded rod 18 rotates, it will synchronously drive the first threaded block 19 to move. The first threaded block 19 drives the moving block 21 to move in a limited way inside the moving groove 20. At this time, under the driving action of the moving block 21, the side clamping plates 13 can move towards each other, so as to clamp the side of the heavy object and reduce the possibility of the heavy object shifting; during the process of the first threaded block 19 moving towards each other under the driving action of the first threaded rod 18, it will synchronously cause the rotating rod 22 to rotate. When the rotating rod 22 rotates, it will synchronously push the top pressing plate 16 to move downward. During the process of the top pressing plate 16 moving downward, it will drive the limiting block 15 to slide inside the limiting groove 14, so as to further improve the stability of the downward movement of the top pressing plate 16, so that the top pressing plate 16 can better press and limit the surface of the heavy object, and improve the stability during the hoisting of the heavy object.

[0039] Example Three: As Figures 7-10The technical scheme shown in the figure, the present invention provides the following technical scheme: a sway-resistant and earthquake-resistant offshore crane, disclosing a sway-resistant mechanism, through which the shaking of the fixed plate 12 during hoisting can be reduced: an auxiliary traction rope 4 is fixedly connected to the outer side of the main traction rope 3, and the lower end of the auxiliary traction rope 4 is fixedly connected to the upper surface of the fixed plate 12, and a sway-resistant mechanism that can resist the auxiliary traction rope 4 is arranged between the side of the auxiliary traction rope 4 and the fixed plate 12; the sway-resistant mechanism includes an adjusting groove 26, the adjusting groove 26 is opened on the fixed plate 12, and the interior of the adjusting groove 26 is nested and connected with a second threaded rod 27, and the outer side of the second threaded rod 27 is fixedly connected with a gear 24, the top A toothed plate 25 is fixedly connected to the upper surface of the pressure plate 16, and the outer side of the second threaded rod 27 is threadedly connected to the second threaded block 23, and the second threaded block 23 is nested and connected to the inside of the adjusting groove 26, and the upper end of the second threaded block 23 is fixedly connected to the adjusting frame 29, and the side of the adjusting frame 29 is rotatably connected to the auxiliary wheel 30, the toothed plate 25 and the gear 24 are meshed with each other, and the second threaded block 23 and the adjusting groove 26 form a rotating structure through the gear 24, and the second threaded block 23 and the adjusting groove 26 form a sliding structure through the second threaded rod 27, and the auxiliary wheels 30 are symmetrically distributed about the center point of the adjusting frame 29, and the sides of the auxiliary wheels 30 are in contact with the outer side of the auxiliary traction rope 4.

[0040] When the top pressure plate 16 moves downward, it will synchronously drive the toothed plate 25 to move downward. At this time, the toothed plate 25 will drive the gear 24 meshing therewith to rotate synchronously. The second threaded rod 27 will synchronously rotate inside the adjusting groove 26 under the driving action of the gear 24. The second threaded rod 27 rotates, so that the second threaded block 23 synchronously moves within the adjusting groove 26. The adjusting frame 29 drives the auxiliary wheel 30 to move stably under the driving action of the second threaded block 23, so that the auxiliary wheel 30 contacts the auxiliary traction rope 4, thereby opening the taut auxiliary traction rope 4, so that the distance between the four groups of auxiliary traction ropes 4 is increased. At this time, the auxiliary traction rope 4 is pulled outward by the fixing plate 12, which reduces the shaking of the single main traction rope 3 when lifting heavy objects, and the anti-shake effect is good.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-rolling and earthquake-resistant offshore crane, comprising a frame column (1), wherein an upper end of the frame column (1) is provided with a frame swing arm (5), a winch (2) is arranged on a side end of the frame swing arm (5), and a main towing rope (3) is arranged inside the winch (2); characterized in that, The lower end of the main towing rope (3) is fixedly connected with a top plate (28), and a fixed plate (12) is fixedly connected to the lower side of the edge of the top plate (28). An electric motor (17) is arranged on the upper surface of the fixed plate (12), and a limiting mechanism capable of clamping a heavy object is arranged between the output end of the electric motor (17) and the fixed plate (12); An auxiliary towing rope (4) is fixedly connected to the outer side of the main towing rope (3), and the lower end of the auxiliary towing rope (4) is fixedly connected to the upper surface of the fixed plate (12). A swing reduction mechanism capable of abutting against the auxiliary towing rope (4) is arranged between the side of the auxiliary towing rope (4) and the fixed plate (12). The swing reduction mechanism includes an adjustment groove (26). The adjustment groove (26) is opened on the fixed plate (12), and a second threaded rod (27) is nested inside the adjustment groove (26). A gear (24) is fixedly connected to the outer side of the second threaded rod (27). A toothed plate (25) is fixedly connected to the upper surface of the top pressing plate (16). A second threaded block (23) is threadedly connected to the outer side of the second threaded rod (27). The second threaded block (23) is nested inside the adjustment groove (26). The upper end of the second threaded block (23) is fixedly connected with an adjustment bracket (29). An auxiliary wheel (30) is rotatably connected to the side of the adjustment bracket (29). The side of the auxiliary wheel (30) is in contact with the outer side of the auxiliary towing rope (4). The limiting mechanism includes a first threaded rod (18). The inner end of the first threaded rod (18) is fixedly connected to the output end of the electric motor (17). The outer end of the first threaded rod (18) is nested on the side of the fixed plate (12). A moving groove (20) is opened on the fixed plate (12). A moving block (21) is nested inside the moving groove (20). The top end of the moving block (21) is fixedly connected with a first threaded block (19). At the same time, the first threaded block (19) is threadedly connected to the outer side of the first threaded rod (18). The lower end of the moving block (21) is fixedly connected with a side clamping plate (13). A rotating rod (22) is hinged to the side end of the first threaded block (19). The lower end of the rotating rod (22) is hinged to the top pressing plate (16). A limiting block (15) is fixedly connected to the side of the top pressing plate (16). A limiting groove (14) is opened on the side of the side plate (7). The limiting block (15) is nested inside the limiting groove (14).

2. The anti-rolling and earthquake-resistant offshore crane according to claim 1, wherein: The lower side of the side edge of the fixed plate (12) is fixedly connected with a side plate (7). An air bag (10) is fixedly connected to the inner side of the side plate (7). An extrusion plate (8) is fixedly connected to the outer side of the air bag (10). A spring (9) is fixedly connected between the extrusion plate (8) and the side plate (7). A distance sensor (11) is fixedly connected to the side of the side plate (7).

3. The anti-rolling and earthquake-resistant offshore crane according to claim 2, characterized in that: The extrusion plate (8) and the side plate (7) form an elastic structure through the spring (9). The height of the distance sensor (11) is not lower than the lowest point of the lower end of the extrusion plate (8). The fixed plate (12) is arranged in a "cross" shape when viewed from above.

4. The anti-rolling and seismic marine crane according to claim 1, wherein: The moving groove (20) is located directly below the first threaded rod (18). The moving block (21) forms a sliding structure with the moving groove (20) through the first threaded block (19). The moving grooves (20) are symmetrically distributed about the center point of the fixed plate (12).

5. A seismic and anti-rolling type marine crane according to claim 1, characterized in that: The rotating rod (22) forms a rotating structure with the top pressing plate (16) through the first threaded block (19). Moreover, the top pressing plate (16) drives the limiting block (15) to form a sliding structure with the limiting groove (14) through the rotating rod (22). The rotating rods (22) are symmetrically distributed left and right about the center point of the first threaded block (19).

6. The anti-rolling and earthquake-resistant type marine crane according to claim 1, characterized in that: The toothed plate (25) meshes with the gear (24). The second threaded block (23) forms a rotating structure with the adjusting groove (26) through the gear (24).

7. A kind of anti-rolling and earthquake-resistant offshore crane according to claim 1, characterized in that: The second threaded block (23) forms a sliding structure with the adjusting groove (26) through the second threaded rod (27). The auxiliary wheels (30) are symmetrically distributed left and right about the center point of the adjusting frame (29).

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