Load self-balancing swing compensation offshore operation crane

Abstract

The utility model discloses a load self-balancing swing compensation offshore operation crane, and particularly relates to the technical field of stable cranes for offshore operation, the load self-balancing swing compensation offshore operation crane comprises a base, a revolving platform is arranged at the upper end of the base, a tower body is arranged at the upper end of the revolving platform, the upper end face of the tower body is fixedly connected with a connecting seat, and the connecting seat is fixedly connected with the base. A connecting block is hinged to the connecting end of the connecting base, a suspension arm is fixedly connected to the end, away from the connecting base, of the connecting block, a supporting structure is arranged at the connecting position between the suspension arm and the tower body, and the supporting structure comprises two fixing blocks fixedly connected to the outer surface wall of the tower body. According to the utility model, by arranging the supporting structure, when the lifting arm is used, extra support can be provided when the lifting arm bears a load, so that the stress of the lifting arm is more uniform, and the phenomena of swinging and shaking of the lifting arm are reduced, thereby improving the stability of the lifting arm in the lifting process and the precision of lifting operation, and ensuring the safety and reliability during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of stable cranes for offshore operations, in particular to a load self-balancing sway-compensating offshore crane. Background Art

[0002] Cranes, also known as marine cranes, are cargo handling equipment used for shipboard cargo handling. Floating objects such as ships, under the influence of wind and wave surges, will experience six degrees of freedom (DOF) motion: sway, heave, roll, pitch, and pitch. To ensure precise control of lifting operations in unstable sea conditions, cranes are equipped with automatic adjustment systems that maintain cargo stability during the lifting process and reduce swaying caused by external factors such as wind and waves. Advanced sensors and technologies monitor and adjust for swaying of loads caused by waves and wind in real time, ensuring the safety and accuracy of lifting operations. These cranes are suitable for use in harsh marine environments such as high winds, high humidity, and salt corrosion.

[0003] Application No. 202210730107.6 discloses a load-balancing, sway-compensated offshore crane. "A boom-plane pitch linear actuator is provided between the boom and the tower, and the lower end of the boom-plane pitch linear actuator is connected to the tower via a tenth rotational pair. The central axis of the tenth rotational pair is parallel to the central axis of the third rotational pair. The upper end of the boom-plane pitch linear actuator is connected to the boom via an eleventh rotational pair." The connection between the boom and the tower is achieved by the boom-plane pitch linear actuator, allowing the boom to move up and down in a vertical plane to adjust its height. However, since the boom is connected to the tower only via the actuator and has no additional supporting structure, the boom is prone to tilting or swinging due to uneven force when lifting cargo, resulting in poor stability and affecting the accuracy of the lifting operation. In addition, when the boom tilts or swings, the actuator not only has to bear the normal longitudinal load, but also unexpected lateral forces or torques, which accelerates wear of the actuator and even causes damage, affecting operational safety. Utility Model Content

[0004] The purpose of the utility model is to provide a load-balancing sway-compensating offshore crane to solve the above-mentioned technical deficiencies.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a load-balancing self-sway compensating offshore crane, comprising a base, a slewing platform is provided at the upper end of the base, a tower body is provided at the upper end of the slewing platform, the upper end face of the tower body is fixedly connected to a connecting seat, the connecting end of the connecting seat is hinged to a connecting block, the end of the connecting block away from the connecting seat is fixedly connected to a boom, a pitch linear driver in the boom plane is hinged between the boom and the connecting seat, and a plurality of linear drivers (not shown in the figure) for compensating for the sway of the boom and the plane where the center of the tower body is located are provided on the slewing platform and located on the outside of the tower body.

[0006] Preferably, a winding drum is fixedly connected to one side of the tower body and the upper end surface of the rotating platform, a steel wire rope is wound around the winding drum, and a hook is connected to the free end of the steel wire rope.

[0007] Preferably, an outer cover is connected to the upper end surface of the rotary platform and is located on the outside of the winding drum, and a head pulley is connected to the free end of the boom, and the head pulley is provided at the upper end of the hook.

[0008] The utility model provides a load-balancing sway-compensating offshore crane as shown in the figures and the figures, wherein a support structure is provided at the connection between the boom and the tower body, and the support structure includes two fixed blocks fixedly connected to the outer wall of the tower body, and support columns are hinged in the outer wall grooves of the two fixed blocks respectively, and a connecting end block is provided at one end of the support column away from the fixed block, and the connecting end block is hinged to the outer side of the boom, and a rod groove is provided inside the support column, and an extension rod is inserted into the rod groove, and one end of the extension rod is connected to the connecting end block, and a reinforcement plate is fixedly connected between the two support columns, and a plurality of grooves are provided on the upper surface of the reinforcement plate.

[0009] Through the above technical solution:

[0010] When in use, the cooperation of the fixing block, the support column, the connecting end block and the reinforcing plate can provide additional support when the boom is under load, so that the boom is subjected to force more evenly, and the swinging and shaking of the boom is reduced. The load is dispersed by multi-point support, which can effectively reduce the pressure on the root connection point of the boom, and avoid fatigue damage or breakage of the boom due to excessive force on a single point. In addition, the reinforcing plate with multiple grooves is used as a ladder to facilitate maintenance personnel to climb to one side of the boom without the use of a ladder or other manned machinery, thereby facilitating maintenance.

[0011] Preferably, a protective net is fixedly connected to the inner surface walls of the plurality of grooves, and a handrail is fixedly connected to the upper end surface of the support column.

[0012] Specifically, when climbing, the protective net can play a protective role, preventing the feet from being accidentally stuck in the narrow opening at the bottom of the groove during climbing, and preventing small tools carried from falling to the ground through the groove. When climbing, maintenance personnel can hold the handrails, and the hands can play a role of applying force, which can share part of the body weight and reduce the burden on the leg muscles, allowing maintenance personnel to climb easily.

[0013] Preferably, a connecting structure is provided on the supporting structure, and the connecting structure includes a connecting strip fixedly connected to the outer side wall of the supporting column, and a sliding groove is provided on the outer side wall of the connecting strip, and a slider is embedded in the interior of the sliding groove.

[0014] Preferably, the connection structure further comprises a connection ring fixedly connected to one end of the slider, the connection ring is provided on one side of the connection bar, and the other end of the slider is connected to a moving wheel located inside the slide groove.

[0015] Through the above technical solution:

[0016] Before climbing, the maintenance personnel connect the connecting end of the safety belt worn on the body to the connecting ring. As climbing, the slider connected to the connecting ring slides in the slide groove, so that the safety belt is continuously connected to the supporting structure, which can play a protective role during the climbing process. If accidents such as slipping and falling occur accidentally, the brakes can be quickly applied to prevent people from falling from a height, thereby minimizing the possibility of injury, reducing the risk of high-altitude operations, and ensuring the personal safety of maintenance personnel. The moving wheels enhance the smoothness of the sliding of the slider in the slide groove, avoiding sliding jams.

[0017] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0018] 1. By setting up a support structure, the connection between the boom and the tower body has an external support function. When in use, it can provide additional support when the boom bears the load, making the force on the boom more uniform and reducing the swing and shaking of the boom, thereby improving the stability of the boom during the lifting process and the accuracy of the lifting operation, ensuring the safety and reliability of the operation. In addition, by dispersing the load through multiple points of support, the pressure on the root connection point of the boom can be effectively reduced, avoiding fatigue damage or fracture of the boom caused by excessive force on a single point. Multi-point support can disperse the load concentrated on a single connection point to multiple support points, thereby reducing the burden on each individual connection point, reducing wear and stress concentration, and extending the service life of the crane. In addition, for boom maintenance, maintenance personnel climb to the side of the boom through the reinforcement plate without the need for a ladder or other manned machinery, which is convenient for maintenance;

[0019] 2. Through the connection structure, when the maintenance personnel are climbing, the connection end of the operator's safety belt can be continuously connected to the supporting structure, which can play a protective role in the climbing process. If an accident such as slipping or falling occurs accidentally, the brakes can be applied quickly to prevent the person from falling from a height, thereby minimizing the possibility of injury, reducing the risk of high-altitude operations, and ensuring the personal safety of maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a partially cutaway schematic diagram of the present utility model;

[0023] Figure 3 This is a schematic diagram of the support structure of the utility model;

[0024] Figure 4 It is an enlarged schematic diagram of the connection structure of the present utility model.

[0025] Description of reference numerals:

[0026] 1. Base; 2. Slewing platform; 3. Tower body; 4. Connecting seat; 5. Connecting block; 6. Boom; 7. Support structure; 71. Fixed block; 72. Support column; 73. Connecting end block; 74. Reinforcement plate; 75. Groove; 76. Protective net; 77. Handrail; 8. Head pulley; 9. Connecting structure; 91. Connecting strip; 92. Slide; 93. Slider; 94. Connecting ring; 95. Moving wheel; 10. Reel; 11. Wire rope; 12. Hook; 13. Outer cover; 14. Boom in-plane pitch linear drive. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] The utility model provides Figure 1 and Figure 2 A load-balancing, sway-compensating offshore crane is shown, comprising:

[0029] The base 1 has a rotating platform 2 at its upper end, a tower body 3 at its upper end, a connecting seat 4 fixedly connected to the upper end of the tower body 3, a connecting block 5 hingedly connected to the connecting end of the connecting seat 4, a boom 6 fixedly connected to the end of the connecting block 5 away from the connecting seat 4, a pitch linear driver 14 in the boom plane is hingedly connected between the boom 6 and the connecting seat 4, and a plurality of linear drivers (not shown) for compensating for the shaking of the boom 6 and the plane where the center of the tower body 3 is located are provided on the rotating platform 2 and located on the outside of the tower body 3.

[0030] Further, see Figure 2 As shown, a winding drum 10 is fixedly connected to one side of the tower body 3 and the upper end surface of the rotary platform 2. A steel wire rope 11 is wound around the winding drum 10, and a hook 12 is connected to the free end of the steel wire rope 11.

[0031] An outer cover 13 is connected to the upper end surface of the rotary platform 2 and located outside the winding drum 10 , and a head pulley 8 is connected to the free end of the boom 6 , which is provided at the upper end of the hook 12 .

[0032] The utility model provides Figure 2 and Figure 3 The load-balancing sway-compensating offshore crane shown in the figure has a support structure 7 provided at the connection between the boom 6 and the tower body 3. The support structure 7 includes two fixed blocks 71 fixedly connected to the outer wall of the tower body 3. Support columns 72 are hingedly connected in the grooves of the outer walls of the two fixed blocks 71. A connecting end block 73 is provided at the end of the support column 72 away from the fixed block 71. The connecting end block 73 is hinged to the outer side of the boom 6. A rod groove is provided inside the support column 72, and an extension rod is inserted into the rod groove. One end of the extension rod is connected to the connecting end block 73. A reinforcement plate 74 is fixedly connected between the two support columns 72, and a plurality of grooves 75 are provided on the upper end surface of the reinforcement plate 74.

[0033] Through the above technical solution:

[0034] When in use, the cooperation of the fixing block 71, the support column 72, the connecting end block 73 and the reinforcing plate 74 can provide additional support when the boom 6 bears the load, so that the boom 6 is subjected to force more evenly, and the swaying and shaking of the boom 6 is reduced. By dispersing the load through multi-point support, the pressure at the root connection point of the boom 6 can be effectively reduced, and fatigue damage or fracture of the boom 6 caused by excessive force at a single point can be avoided. In addition, the reinforcing plate 74 with multiple grooves 75 is used as a ladder to facilitate maintenance personnel to climb to one side of the boom 6 without the need for a ladder or other manned machinery, which is convenient for maintenance.

[0035] Further, see Figure 3 As shown, a protective net 76 is fixedly connected to the inner surface wall of the plurality of grooves 75 , and a handrail 77 is fixedly connected to the upper end surface of the support column 72 .

[0036] Specifically, when climbing, the protective net 76 can play a protective role, preventing the feet from being accidentally stuck in the narrow opening at the bottom of the groove 75 when climbing, and also preventing small tools carried from falling to the ground through the groove 75. When climbing, the maintenance personnel can hold the handrail 77, and the hands can play a role of applying force, which can share part of the body weight and reduce the burden on the leg muscles, allowing the maintenance personnel to climb easily.

[0037] The utility model provides Figure 3 and Figure 4 The load-balancing sway-compensating offshore crane shown in the figure has a connecting structure 9 provided on the support structure 7. The connecting structure 9 includes a connecting strip 91 fixedly connected to the outer wall of the support column 72. The outer wall of the connecting strip 91 is provided with a slide groove 92, and a slider 93 is embedded in the interior of the slide groove 92.

[0038] The connecting structure 9 further includes a connecting ring 94 fixedly connected to one end of the slider 93 . The connecting ring 94 is provided on one side of the connecting bar 91 . The other end of the slider 93 is located inside the slide groove 92 and is connected to a moving wheel 95 .

[0039] Through the above technical solution:

[0040] Before climbing, the maintenance personnel connect the connecting end of the safety belt worn on the body to the connecting ring 94. As they climb, the slider 93 connected to the connecting ring 94 slides in the slide groove 92, so that the safety belt continues to be connected to the support structure 7, which can play a protective role during the climbing process. If accidents such as slipping and falling occur accidentally, the brakes can be applied quickly to prevent people from falling from a height, thereby minimizing the possibility of injury, reducing the risk of high-altitude operations, and ensuring the personal safety of maintenance personnel. The moving wheel 95 enhances the smoothness of the sliding of the slider 93 in the slide groove 92 to avoid sliding jams.

[0041] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A load-balancing sway-compensating offshore crane, characterized in that: include: A base (1), wherein a revolving platform (2) is provided at the upper end of the base (1), a tower body (3) is provided at the upper end of the revolving platform (2), an upper end surface of the tower body (3) is fixedly connected to a connecting seat (4), a connecting block (5) is hingedly connected to the connecting end of the connecting seat (4), an end of the connecting block (5) away from the connecting seat (4) is fixedly connected to a boom (6), and an in-plane pitch linear driver (14) of the boom is hingedly connected between the boom (6) and the connecting seat (4); A support structure (7) is provided at the connection between the boom (6) and the tower body (3), and the support structure (7) comprises two fixed blocks (71) fixedly connected to the outer wall of the tower body (3), support columns (72) are hingedly connected in the outer wall grooves of the two fixed blocks (71), and a connecting end block (73) is provided at one end of the support column (72) away from the fixed block (71), and the connecting end block (73) is hingedly connected to the outer side of the boom (6), and a reinforcing plate (74) is fixedly connected between the two support columns (72).

2. The load-balancing sway-compensating offshore crane according to claim 1, characterized in that: The support structure (7) further comprises a plurality of grooves (75) formed on the upper end surface of the reinforcing plate (74); the inner surface walls of the plurality of grooves (75) are fixedly connected to a protective net (76); and the upper end surface of the support column (72) is fixedly connected to a handrail (77).

3. The load-balancing sway-compensating offshore crane according to claim 1, characterized in that: The support structure (7) is provided with a connecting structure (9), and the connecting structure (9) includes a connecting strip (91) fixedly connected to the outer wall of the support column (72), and the outer wall of the connecting strip (91) is provided with a sliding groove (92), and a sliding block (93) is embedded in the interior of the sliding groove (92).

4. The load-balancing sway-compensating offshore crane according to claim 3, characterized in that: The connecting structure (9) further comprises a connecting ring (94) fixedly connected to one end of the slider (93), wherein the connecting ring (94) is arranged on one side of the connecting bar (91), and a moving wheel (95) is connected to the other end of the slider (93) and located inside the slide groove (92).

5. The load-balancing sway-compensating offshore crane according to claim 1, characterized in that: A winding drum (10) is fixedly connected to one side of the tower body (3) and located on the upper end surface of the rotary platform (2). A steel wire rope (11) is wound around the winding drum (10), and a hook (12) is connected to the free end of the steel wire rope (11).

6. The load-balancing sway-compensating offshore crane according to claim 1, characterized in that: The upper end surface of the rotary platform (2) and the outer side of the winding drum (10) are connected to an outer cover (13), and the free end of the boom (6) is connected to a head pulley (8), and the head pulley (8) is arranged at the upper end of the hook (12).

7. The load-balancing and sway-compensating offshore crane according to claim 1, characterized in that: A rod groove is provided inside the support column (72), an extension rod is inserted into the rod groove, and one end of the extension rod is connected to the connecting end block (73).

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