Anti-rolling and anti-seismic maritime work crane

Abstract

The invention relates to the technical field of maritime work cranes and discloses an anti-rolling and anti-seismic maritime work crane which is characterized in that a rack swing wall is arranged at the upper end of a rack column, a winch is arranged on the end side of the rack swing wall, and a main traction rope is arranged in the winch; the lower end of the main traction rope is fixedly connected with a top plate, and the lower side of the edge end of the top plate is fixedly connected with a fixing plate. According to the anti-shaking and anti-seismic maritime work crane, when the device drives a heavy object to move upwards and the heavy object shakes and deviates, an extrusion plate on the side can be extruded, at the moment, the distance between the extrusion plate and a side plate is changed, the moving distance of the heavy object can be judged through a distance sensor, and when the moving distance of the heavy object is large, data can be transmitted to a controller; and therefore, a worker is reminded that the heavy object deviates, potential safety hazards exist, the traction and pulling state of the auxiliary traction rope on the fixing plate is stressed outwards, the shaking performance of the single main traction rope during hoisting operation of the heavy object is reduced, and the stabilization effect is good.

Description

Technical Field

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

[0002] When carrying out material loading and unloading, equipment lifting and water rescue in ports, shipyards and water operation sites, cranes are needed to assist the operations. Floating crane is a kind of lifting equipment. Floating crane is a kind of boom-type crane that can be installed on a special floating boat. It can not only perform lifting operations, but also can be used in marine engineering, dock loading and unloading and other occasions that require water operations. For example, when constructing an offshore platform-based observation station, the required observation instruments and equipment can be stably lifted by a floating crane to facilitate the subsequent construction of the offshore platform-based observation station.

[0003] Prior art 1 (publication number: CN117068974A, Chinese patent with publication date of 2023-11-17) A marine engineering hoist, by setting an extended fixing component, uses a connecting arm to expand and extend around a mobile base, and then uses the electromagnet and negative pressure suction cup on the adsorption plate to adsorb on the deck and the ground, thereby expanding the contact area between the mobile 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, so that the center of gravity of the hoist is lower in the fixed state, further enhancing the installation stability of the hoist on the ground and the deck.

[0004] There is also prior art 2 (publication number: CN220866966U, a Chinese patent with a publication date of 2024-04-30), a polar anti-roll offshore crane. The polar anti-roll offshore crane is provided with a connecting pipe and a water tank. Due to the weight of the hoisted workpiece itself, the rotating base will swing. When the rotating base swings, the control box controls the electric push rod of the outer wall of the connecting pipe on the same side of the deflection. The electric push rod drives the gate plate to open and close the connecting pipe through the lifting push plate. Then, the servo motor drives the pump blades 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, the anti-roll frame is balanced and adjusted.

[0005] Although the existing technologies 1 and 2 can meet various marine construction needs through their high adaptability, most of their cranes use lifting ropes to reel in heavy objects for lifting. During the lifting operation, they cannot be subjected to anti-sway and anti-vibration treatment. When performing offshore operations, they are easily affected by external wind and waves. During the lifting operation, the heavy objects will shake to a certain extent, and there is a risk of the heavy objects falling, posing certain safety hazards.

[0006] Therefore, we proposed a sway-resistant and earthquake-resistant offshore crane to solve the above-mentioned problems. Summary of the invention

[0007] The object of the present invention is to provide a shake-resistant and earthquake-resistant offshore crane to solve the problem raised in the above-mentioned background technology that most of the cranes on the market currently use lifting ropes to reel in heavy objects, and cannot perform shake-resistant and earthquake-resistant treatment during lifting operations. When operating at sea, the heavy objects are affected by external wind and waves, and there is a certain shaking during the lifting operation, which poses a risk of the heavy objects falling and poses certain safety hazards.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a sway-resistant and earthquake-resistant offshore crane, comprising 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 traction rope is arranged inside the winch; a top plate is fixedly connected to the lower end of the main traction rope, and a fixed plate is fixedly connected to the lower side of the edge end of the top plate, a motor is arranged on the upper surface of the fixed plate, and a limiting mechanism for clamping heavy objects is arranged between the output end of the motor and the fixed plate; an auxiliary traction rope is fixedly connected to the outer side of the main traction rope, and the lower end of the auxiliary traction rope is fixedly connected to the upper surface of the fixed plate, and a sway-resistant mechanism for resisting the auxiliary traction rope is arranged between the side of the auxiliary traction rope and the fixed plate.

[0009] Preferably, the lower end side of the fixed plate is fixedly connected to a side plate, and the inner side of the side plate is fixedly connected to an airbag, and the outer side of the airbag is fixedly connected to an extrusion plate, and a spring is fixedly connected between the extrusion plate and the side plate, and the side of the side plate is fixedly connected to a distance sensor.

[0010] Preferably, the extrusion plate forms an elastic structure with the side plate through a spring, the height of the distance sensor is not lower than the lowest point of the lower end of the extrusion plate, and the fixing 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 motor, and the outer end of the first threaded rod is nested and connected to the side of the fixed plate, the fixed plate is provided with a movable groove, and the movable groove is nested and connected to a movable block, and the top of the movable block is fixedly connected to the first threaded block, and the first threaded block is threadedly connected to the outer side of the first threaded rod, the lower end of the movable block is fixedly connected to a side clamping plate, the edge end of the first threaded block is hinged with a rotating rod, and the lower end of the rotating rod is hinged with a top pressure plate, and the side of the top pressure plate is fixedly connected to the limiting block, the side of the side plate is provided with a limiting groove, and the limiting groove is nested and connected to the limiting block.

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

[0013] Preferably, the rotating rod forms a rotating structure through the first threaded block and the top pressure plate, and the top pressure plate drives the limit block and the limit groove through the rotating rod to form a sliding structure, and the rotating rod is symmetrically distributed about the center point of the first threaded block.

[0014] Preferably, the anti-roll mechanism includes an adjusting groove, the adjusting groove is opened on the fixed plate, and the interior of the adjusting groove is nested with a second threaded rod, and the outer side of the second threaded rod is fixedly connected to a gear, the upper surface of the top pressure plate is fixedly connected to a gear plate, the outer side of the second threaded rod is threadedly connected to a second threaded block, and the second threaded block is nested in the interior of the adjusting groove, and the upper end of the second threaded block is fixedly connected to an adjusting frame, and the side of the adjusting frame is rotatably connected to an auxiliary wheel.

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

[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 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 present invention has the following beneficial effects:

[0018] (1) The staff can place the heavy object on the placement plate, and the placement plate can support the heavy object. The squeezing plate can initially clamp and limit the side of the heavy object under the drive of the elastic force of the spring;

[0019] When the device drives the weight to move upward and the weight shakes and deviates, it will squeeze the side squeeze plate. At this time, the distance between the squeeze plate and the side plate changes. The distance the weight moves can be judged by the distance sensor. When the weight moves a long distance, the data can be transmitted to the controller to remind the staff that the weight is deviated, which indicates that there is a safety hazard.

[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 within the moving groove. At this time, the side clamping plates can move toward each other under the driving action of the moving block, thereby clamping the sides of the heavy object and reducing the possibility of the heavy object shifting.

[0021] When the first threaded block moves toward each other under the driving action of the first threaded rod, the rotating rod will be synchronously rotated. When the rotating rod is rotating, the top pressure plate will be synchronously pushed downward. When the top pressure plate moves downward, the limit block will be driven to slide inside the limit groove, thereby further improving the stability of the top pressure plate moving downward, so that the top pressure plate can better press down the surface of the heavy object to limit the position, thereby improving the stability when the heavy object is hoisted;

[0022] (3) When the top pressure plate moves downward, it will synchronously drive the toothed plate to move downward. At this time, the toothed plate will drive the gear meshing with it to rotate synchronously. The second threaded rod will synchronously rotate inside the adjusting groove under the driving action of the gear. The second threaded rod rotates, so that the second threaded block synchronously moves within the adjusting groove. The adjusting frame stably drives the auxiliary wheel to move under the driving action of the second threaded block, so that the auxiliary wheel contacts the auxiliary traction rope, thereby opening the taut auxiliary traction rope, thereby increasing the distance between the four groups of auxiliary traction ropes. At this time, the auxiliary traction rope is pulled outward by the fixed plate, which reduces the shaking of the single main traction rope when lifting heavy objects, and the anti-shake effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the placement plate of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the side panel of the present invention;

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

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

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

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the tooth plate of the present invention;

[0030] Figure 8 This is a schematic diagram of the three-dimensional structure of the adjustment frame of the present invention;

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the gear of the present invention;

[0032] Fig.10 It is a schematic diagram of the three-dimensional structure 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 wall; 6. placement plate; 7. side plate; 8. extrusion plate; 9. spring; 10. airbag; 11. distance sensor; 12. fixed plate; 13. side clamping plate; 14. limit groove; 15. limit block; 16. top pressure 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. tooth plate; 26. adjustment groove; 27. second threaded rod; 28. top plate; 29. ​​adjustment frame; 30. auxiliary wheel. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1: Figure 1-Figure 3 The technical scheme shown in the invention provides the following technical scheme: a sway-resistant and earthquake-resistant offshore crane, disclosing a distance sensor 11, through which the displacement of the heavy object can be monitored: a frame column 1, a frame swing wall 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 wall 5, and a main traction rope 3 is arranged inside the winch 2; a side plate 7 is fixedly connected to the lower end side of the fixed plate 12, and an air bag 10 is fixedly connected to the inner side of the side plate 7, and an extrusion plate 8 is fixedly connected to the outer side of the air bag 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, and the extrusion plate 8 forms an elastic structure with the side plate 7 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, and the fixed 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, and the squeezing plate 8 can initially clamp and limit the side of the heavy object under the drive of the elastic force of the spring 9; when the device drives the heavy object to move upward and the heavy object shakes and deviates, it will squeeze the squeezing plate 8 on the side. At this time, the distance between the squeezing plate 8 and the side plate 7 changes. The distance moved by the heavy object can be judged by the distance sensor 11. When the heavy object moves a large distance, it can be transmitted to the controller through data, thereby reminding the staff that the heavy object has deviated and reminding the personnel of safety hazards.

[0037] Embodiment 2: Figure 2 , Figure 4-Figure 6The technical scheme shown in the invention provides the following technical scheme: a sway-resistant and earthquake-resistant offshore crane, disclosing a limiting mechanism, through which heavy objects can be clamped and limited: a top plate 28 is fixedly connected to the lower end of the main traction rope 3, and a fixed plate 12 is fixedly connected to the lower side of the edge end of the top plate 28, a motor 17 is arranged on the upper surface of the fixed plate 12, and a limiting mechanism for clamping heavy objects is arranged between the output end of the motor 17 and the fixed 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 fixed plate 12, a moving groove 20 is opened on the fixed plate 12, and a moving block 21 is nested and connected inside the moving groove 20, and a first threaded block 19 is fixedly connected to the top of the moving block 21, and the first threaded block 19 is screwed The groove is connected to the outside of the first threaded rod 18, the lower end of the moving block 21 is fixedly connected to the side clamping plate 13, the side end of the first threaded block 19 is hinged with a rotating rod 22, and the lower end of the rotating rod 22 is hinged with a top pressure plate 16, and the side of the top pressure plate 16 is fixedly connected to the limiting block 15, the side of the side plate 7 is provided with a limiting groove 14, and the inner part of the limiting groove 14 is nested and connected to the limiting block 15, 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, and the moving groove 20 is symmetrically distributed about the center point of the fixed plate 12, the rotating rod 22 forms a rotating structure with the top pressure plate 16 through the first threaded block 19, and the top pressure plate 16 drives the limiting block 15 and the limiting groove 14 to form a sliding structure through the rotating rod 22, and the rotating rod 22 is symmetrically distributed about the center point of the first threaded block 19.

[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, and the first threaded block 19 drives the moving block 21 to move within the moving groove 20. At this time, the side clamping plate 13 can move toward each other under the driving action of the moving block 21, so as to clamp the side of the heavy object and reduce the possibility of the heavy object being offset; in the process of the first threaded block 19 moving toward each other under the driving action of the first threaded rod 18, the rotating rod 22 will be synchronously rotated. When the rotating rod 22 is rotating, it will synchronously push the top pressure plate 16 to move downward. In the process of the top pressure plate 16 moving downward, it will drive the limiting block 15 to slide inside the limiting groove 14, thereby further improving the stability of the top pressure plate 16 moving downward, so that the top pressure plate 16 can better press down the surface of the heavy object to limit the position, thereby improving the stability of the heavy object when hoisting.

[0039] Embodiment 3: Figure 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. A sway-resistant and earthquake-resistant offshore crane, comprising a frame column (1), a frame swing wall (5) being arranged at the upper end of the frame column (1), a winch (2) being arranged at the end side of the frame swing wall (5), and a main traction rope (3) being arranged inside the winch (2); characterized in that: The lower end of the main traction rope (3) is fixedly connected to a top plate (28), and the lower side of the edge of the top plate (28) is fixedly connected to a fixed plate (12), the upper surface of the fixed plate (12) is provided with a motor (17), and a limiting mechanism capable of clamping a heavy object is provided between the output end of the motor (17) and the fixed plate (12); the outer side of the main traction rope (3) is fixedly connected to an auxiliary traction rope (4), 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 reduction mechanism capable of resisting the auxiliary traction rope (4) is provided between the side of the auxiliary traction rope (4) and the fixed plate (12).

2. The anti-sway and earthquake-resistant offshore crane according to claim 1, characterized in that: The lower end side of the fixing plate (12) is fixedly connected to a side plate (7), the inner side of the side plate (7) is fixedly connected to an air bag (10), the outer side of the air bag (10) is fixedly connected to an extrusion plate (8), a spring (9) is fixedly connected between the extrusion plate (8) and the side plate (7), and the side of the side plate (7) is fixedly connected to a distance sensor (11).

3. The anti-sway and earthquake-resistant offshore crane according to claim 2, characterized in that: The extrusion plate (8) forms an elastic structure with the side plate (7) via a 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); and the fixing plate (12) is arranged in a "cross" shape when viewed from above.

4. The anti-sway and earthquake-resistant offshore crane according to claim 2, characterized in that: The limiting mechanism comprises 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 fixed plate (12), the fixed plate (12) is provided with a moving groove (20), and the inside of the moving groove (20) is nested and connected to a moving block (21), and the top end of the moving block (21) is fixedly connected to the first threaded block (19), and 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 to the side clamping plate (13), the side end of the first threaded block (19) is hinged to the rotating rod (22), and the lower end of the rotating rod (22) is hinged to the top pressure plate (16), and the side of the top pressure plate (16) is fixedly connected to the limiting block (15), the side of the side plate (7) is provided with a limiting groove (14), and the limiting groove (14) is nested inside and connected to the limiting block (15).

5. The anti-sway and earthquake-resistant offshore crane according to claim 4, characterized in that: The movable groove (20) is located directly below the first threaded rod (18); the movable block (21) forms a sliding structure with the movable groove (20) through the first threaded block (19); and the movable groove (20) is symmetrically distributed about the center point of the fixed plate (12).

6. The anti-sway and earthquake-resistant offshore crane according to claim 4, characterized in that: The rotating rod (22) forms a rotating structure with the first threaded block (19) and the top pressure plate (16), and the top pressure plate (16) drives the limit block (15) and the limit groove (14) through the rotating rod (22) to form a sliding structure. The rotating rod (22) is symmetrically distributed with respect to the center point of the first threaded block (19).

7. The anti-sway and earthquake-resistant offshore crane according to claim 4, characterized in that: The anti-sway mechanism comprises an adjustment groove (26), the adjustment groove (26) is provided on the fixing plate (12), and a second threaded rod (27) is nested and connected inside the adjustment groove (26), and 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 pressure plate (16), the outer side of the second threaded rod (27) is threadedly connected to a second threaded block (23), and the second threaded block (23) is nested and connected inside the adjustment groove (26), and an adjustment frame (29) is fixedly connected to the upper end of the second threaded block (23), and an auxiliary wheel (30) is rotatably connected to the side of the adjustment frame (29).

8. The anti-sway and earthquake-resistant offshore crane according to claim 7, characterized in that: The toothed plate (25) and the gear (24) are meshed with each other, and the second threaded block (23) forms a rotating structure through the gear (24) and the adjusting groove (26).

9. The anti-sway and earthquake-resistant offshore crane according to claim 7, characterized in that: The second threaded block (23) forms a sliding structure with the adjustment groove (26) through the second threaded rod (27), the auxiliary wheels (30) are symmetrically distributed about the center point of the adjustment frame (29), and the sides of the auxiliary wheels (30) are in contact with the outer side of the auxiliary traction rope (4).

Images