Marine crane

Abstract

A marine crane comprises a base, the base is connected with a folding suspension arm through a slewing bearing, the folding suspension arm is formed by sequentially connecting a base section, a middle section and a tail section through hinge shafts, folding of the folding suspension arm is achieved through a first hydraulic cylinder and a second hydraulic cylinder, and the tail section is connected with a hanging scaffold through a connecting sling. A main pulley assembly used for controlling the connecting sling is arranged on the folding suspension arm, a stabilization device is installed on the upper end face of the slewing bearing, the stabilization device is connected with the hanging scaffold through auxiliary ropes, the two auxiliary ropes and the hanging scaffold connected with the sling form a triangular stable structure, and the stabilization device controls stabilization of the hanging scaffold through dragging actions on the auxiliary ropes. According to the marine crane provided by the utility model, the folding suspension arm is folded, so that the occupied space of the crane is reduced; the two auxiliary ropes and the hanging scaffold connected with the sling form a triangular stable structure, so that the hanging scaffold works stably, the slewing bearing drives the folding suspension arm and the stabilization device to rotate synchronously, multi-angle adjustment of the crane is realized, and the occupied volume of the stabilization device is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a marine crane. Background Art

[0002] Marine cranes are special cranes that perform transportation operations in a maritime environment. They are mainly used for important tasks such as the transportation and transfer of cargo between ships, marine replenishment, and the deployment and recovery of underwater operating equipment. For marine cranes, due to the influence of marine environmental factors such as sea breeze and waves, the ship and the crane will experience roll and pitch, causing the hook to swing, and it is impossible to accurately place the material in the designated position. In severe cases, the ship and the crane may tilt or capsize, posing a safety hazard. It is necessary to install a roll-stabilizing device on the marine crane. The existing marine crane roll-stabilizing device has a complex structure. At the same time, installing a roll-stabilizing device on a marine crane without a roll-stabilizing device is likely to interfere with the structural strength of the original crane itself, making it difficult to install and occupying a large amount of deck space. Utility Model Content

[0003] Technical problems to be solved

[0004] In view of this, the embodiments of this specification provide a ship crane with strong stability and space saving.

[0005] Technical Solution

[0006] In order to solve the technical problems, the present invention provides the following technical solutions: a ship crane, comprising a base, the base is connected to a folding boom through a slewing bearing, the folding boom is connected in sequence by a base section, a middle section and an end section through a hinge shaft, a first hydraulic cylinder is hinged on the slewing bearing, the other end of the first hydraulic cylinder is hinged to the middle section, the middle section is hinged to the second hydraulic cylinder, the other end of the second hydraulic cylinder is hinged to the end section, the end section is connected to a hanging plate through a connecting sling, a main pulley assembly for controlling the connecting sling is provided on the folding boom, and anti-sway devices are symmetrically installed on the left and right sides of the upper end surface of the slewing bearing, the anti-sway device is connected to the hanging plate through auxiliary ropes, and two symmetrically arranged auxiliary ropes and the hanging plate connected to the ropes form a triangular stable structure, and the anti-sway device controls the anti-sway of the hanging plate by dragging the auxiliary ropes.

[0007] Compared with the prior art, the advantages of the present invention are: the folding boom realizes the folding function of the folding boom by connecting the base section, the middle section and the terminal section in sequence through a hinge shaft. When the crane is not in use, the folding boom is in a folded state, reducing the space occupied by the crane; a triangular stable structure is formed by two symmetrically arranged auxiliary ropes and a hanging plate connected to the slings, and the anti-sway device controls the hanging plate by dragging the auxiliary ropes, making the hanging plate more stable during operation. At the same time, the folding boom and the anti-sway device are arranged on a slewing support, and the slewing support drives the folding boom and the anti-sway device to rotate synchronously, realizing multi-angle adjustment of the crane, and also reducing the volume occupied by the anti-sway device.

[0008] In some embodiments, the anti-roll device includes an anti-roll winch, a folding mechanical arm and a guide wheel device. The guide wheel device is arranged at the outer end of the folding mechanical arm, and the auxiliary rope is connected to the anti-roll winch through the guide wheel device. Through the improvement, the anti-roll winch drags the hanging plate through the auxiliary rope, tightens the auxiliary rope, and adjusts the angle of the auxiliary rope to pull the hanging plate through the folding mechanical arm.

[0009] In some embodiments, a main winch is provided on the slewing bearing, and a connecting sling is connected to the main winch. Through the improvement, the main winch pulls the connecting sling to achieve the up and down movement of the hanging plate, which has a wider range of applications.

[0010] In some embodiments, the main pulley assembly includes a first pulley, a second pulley, a third pulley, a fourth pulley and a fifth pulley. The first pulley is arranged at the upper end of the base section, the second pulley and the third pulley are respectively arranged at the two ends of the middle section, and the fourth pulley and the fifth pulley are respectively arranged at the two ends of the terminal section. The connecting rope is connected to the hanging plate through the main winch, the first pulley, the second pulley, the third pulley, the fourth pulley, and the fifth pulley in sequence. Through the improvement, the auxiliary rope runs more smoothly through the first pulley, the second pulley, the third pulley, the fourth pulley and the fifth pulley.

[0011] In some embodiments, a hook is fixed at the central axis of the lower end surface of the hanging plate. Through the improvement, the setting of the hook can be used to hook objects, and the scope of application is wider.

[0012] In some embodiments, a driving motor is provided on the base, a driving gear is provided on the output shaft of the driving motor, and a driven rack meshing with the driving gear is provided on the outer side of the slewing bearing. The slewing bearing is driven to rotate by the cooperation of the driving gear and the rack. Through the improvement, the slewing bearing is driven to rotate by the engagement of the driving gear of the driving motor with the rack, thereby realizing the synchronous rotation of the folding boom and the anti-roll device.

[0013] In some embodiments, an ear plate is fixed on the upper end face of the hanging plate, and a connecting hole is provided on the ear plate. The auxiliary rope is connected to the connecting hole through a disassembly buckle. Through the improvement, the auxiliary rope is connected to the connecting hole through the disassembly buckle, making it easy to disassemble and assemble the auxiliary rope, and at the same time, the connection with the hanging plate is tighter and more secure.

[0014] Beneficial effects

[0015] The utility model provides a marine crane, wherein a foldable boom is connected in sequence through a base section, a middle section and a terminal section through an articulated shaft, and each section controls the folding and unfolding of the foldable boom through a hydraulic cylinder. When the crane is not in use, the foldable boom is in a folded state, thereby reducing the space occupied by the crane; a triangular stable structure is formed by two symmetrically arranged auxiliary ropes and a hanging plate connected to the slings; a roll reduction winch drags the hanging plate through the auxiliary ropes, tightens the auxiliary ropes, and adjusts the angle of the hanging plate pulled by the auxiliary ropes through the folding mechanical arm, so that the hanging plate is more stable during operation; at the same time, the foldable boom and the roll reduction device are arranged on a slewing support, and the slewing support drives the foldable boom and the roll reduction device to rotate synchronously, thereby realizing multi-angle adjustment of the crane lifting weight, and also reducing the space occupied by the crane and the roll reduction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the utility model from another angle;

[0019] Figure 3 This is a schematic cross-sectional view of the utility model;

[0020] Figure 4 This is a schematic structural diagram of the anti-roll winch of the utility model;

[0021] Figure 5 This is a structural diagram of the hanging tray of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the disassembly buckle of the present utility model.

[0023] In the figure: 1. Base; 2. Slewing bearing; 2.1. Driven rack; 3. Folding boom; 3.1. Base section; 3.2. Middle section; 3.3. End section; 4. First hydraulic cylinder; 5. Second hydraulic cylinder; 6. Connecting sling; 7. Lifting plate; 7.1. Hook; 7.2. Ear plate; 7.3. Connecting hole; 8. Main pulley assembly; 8.1. First pulley; 8.2. Second pulley; 8.3. Third pulley; 8.4. Fourth pulley; 8.5. Fifth pulley; 9. Anti-roll device; 9.1. Anti-roll winch; 9.2. Folding manipulator arm; 9.2.1. Manipulator arm body; 9.2.2. Boom mechanism; 9.3. Guide wheel device; 10. Auxiliary rope; 11. Driving motor; 11.1. Driving gear; 12. Disassembly buckle; 12.1. U-shaped rod; 12.2. Pin; 13. Main winch. DETAILED DESCRIPTION

[0024] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0026] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0027] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0028] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0029] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0030] See also Figure 1-3 As shown in this embodiment: a ship crane comprises a base 1, which is connected to a folding boom 3 through a slewing bearing 2, and the folding boom 3 is connected in sequence by a base section 3.1, a middle section 3.2 and an end section 3.3 through a hinge shaft, a first hydraulic cylinder 4 is hinged on the slewing bearing 2, the other end of the first hydraulic cylinder 4 is hinged to the middle section 3.2, the middle section 3.2 is hinged to a second hydraulic cylinder 5, the other end of the second hydraulic cylinder 5 is hinged to the end section 3.3, and the end section 3.3 is connected to a hanging plate 7 through a connecting sling 6, and a main pulley assembly 8 for controlling the connecting sling 6 is provided on the folding boom 3, and anti-roll devices 9 are symmetrically installed on the left and right sides of the upper end surface of the slewing bearing 2, and the anti-roll device 9 is connected to the hanging plate 7 through an auxiliary rope 10. The two symmetrically arranged auxiliary ropes 10 and the hanging plate 7 connected to the sling 6 form a triangular stable structure, and the anti-roll device 9 controls the anti-roll of the hanging plate 7 by dragging the auxiliary ropes 10.

[0031] The folding boom 3 is connected in sequence through the base section 3.1, the middle section 3.2 and the end section 3.3 through a hinge shaft to realize the folding function of the folding boom 3. When the crane is not in use, the folding boom 3 is in a folded state, reducing the space occupied by the crane; a triangular stable structure is formed by two symmetrically arranged auxiliary ropes 10 and the hanging plate 7 connected to the sling 6, and the anti-sway device 9 controls the hanging plate 7 by dragging the auxiliary ropes 10, so that the hanging plate 7 is more stable during operation. At the same time, the folding boom 3 and the anti-sway device 9 are arranged on the slewing bearing 2, and the slewing bearing 2 drives the folding boom 3 and the anti-sway device 9 to rotate synchronously, realizing multi-angle adjustment of the crane, and also reducing the volume occupied by the anti-sway device 9.

[0032] In some embodiments, as Figure 2-Figure 4As shown, the anti-roll device 9 includes a anti-roll winch 9.1, a folding mechanical arm 9.2 and a guide wheel device 9.3. The guide wheel device 9.3 is arranged at the outer end of the folding mechanical arm 9.2, and the auxiliary rope 10 is connected to the anti-roll winch 9.1 through the guide wheel device 9.3. It should be noted that the anti-roll winch 9.1 drags the hanging plate 7 through the auxiliary rope 10, tightens the auxiliary rope 10, and adjusts the angle of the auxiliary rope 10 to pull the hanging plate 7 through the folding mechanical arm 9.2.

[0033] It should be noted that the folding robot arm 9.2 includes a robot arm body 9.2.1 and a luffing mechanism 9.2.2. The two ends of the robot arm are hinged to the slewing bearing 2 and the luffing mechanism 9.2.2 respectively, and the guide wheel device 9.3 is arranged at the outer end of the luffing mechanism 9.2.2.

[0034] In some embodiments, as Figure 2-Figure 4 As shown, a main winch 13 is provided on the slewing bearing 2, and the connecting sling 6 is connected to the main winch 13. It should be noted that the main winch 13 pulls the connecting sling 6 to achieve the up and down movement of the hanging plate 7, which has a wider range of applications.

[0035] In some embodiments, as Figure 3 As shown, the main pulley assembly 8 includes a first pulley 8.1, a second pulley 8.2, a third pulley 8.3, a fourth pulley 8.4 and a fifth pulley 8.5. The first pulley 8.1 is arranged at the upper end of the base section 3.1, the second pulley 8.2 and the third pulley 8.3 are respectively arranged at the two ends of the middle section 3.2, the fourth pulley 8.4 and the fifth pulley 8.5 are respectively arranged at the two ends of the final section 3.3, and the connecting rope 6 is connected to the hanging plate 7 through the main winch 13, the first pulley 8.1, the second pulley 8.2, the third pulley 8.3, the fourth pulley 8.4 and the fifth pulley 8.5 in sequence. It should be noted that through the first pulley 8.1, the second pulley 8.2, the third pulley 8.3, the fourth pulley 8.4 and the fifth pulley 8.5, the auxiliary rope 10 runs more smoothly.

[0036] In some embodiments, as Figure 5 As shown, a hook 7.1 is fixed at the central axis of the lower end surface of the hanging plate 7. It should be noted that the setting of the hook 7.1 can be used to hook objects, and has a wider range of applications.

[0037] In some embodiments, as Figure 1-Figure 2 As shown, a driving motor 11 is provided on the base 1, and a driving gear 11.1 is provided on the output shaft of the driving motor 11. A driven rack 2.1 meshing with the driving gear 11.1 is provided on the outer side of the slewing bearing 2. The slewing bearing 2 is driven to rotate by the cooperation between the driving gear 11.1 and the rack. It should be noted that the slewing bearing 2 is driven to rotate by the engagement of the driving gear 11.1 of the driving motor 11 with the rack, thereby achieving synchronous rotation of the folding boom 3 and the anti-roll device 9.

[0038] In some embodiments, as Figure 5-Figure 6 As shown, the upper end face of the hanging plate 7 is fixed with an ear plate 7.2, and a connecting hole 7.3 is provided on the ear plate 7.2. The auxiliary rope 10 is connected to the connecting hole 7.3 through a disassembly buckle 12. It should be noted that the connection with the connecting hole 7.3 through the disassembly buckle 12 makes it easy to assemble and disassemble the auxiliary rope 10, and at the same time, the connection with the hanging plate 7 is tighter and more secure.

[0039] It should be noted that the disassembly buckle 12 includes a U-shaped rod 12.1 and a pin 12.2. The right end of the U-shaped rod 12.1 is fixedly connected to a nut, and the left end is fixedly connected to a ring. The pin 12.2 passes through the ring and is connected to the nut.

[0040] Working principle: The slewing bearing 2 drives the folding boom 3 and the anti-sway device 9 to rotate synchronously, adjust the crane angle to the lifting position, and pull the connecting rope 6 through the main winch 13 to realize the up and down movement of the hanging plate 7. When the hook 7.1 of the hanging plate 7 hooks the object and the main winch 13 is operated to make the hanging plate 7 move upward to the predetermined position, the anti-sway winch 9.1 drags the hanging plate 7 through the auxiliary rope 10, tightens the auxiliary rope 10, and prevents the hanging plate 7 from shaking.

[0041] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0042] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A marine crane comprising a base (1), characterized in that: The base (1) is connected to a folding boom (3) via a slewing bearing (2); the folding boom (3) is connected in sequence by a base section (3.1), a middle section (3.2) and a terminal section (3.3) via a hinge shaft; a first hydraulic cylinder (4) is hinged to the slewing bearing (2); the other end of the first hydraulic cylinder (4) is hinged to the middle section (3.2); the middle section (3.2) is hinged to a second hydraulic cylinder (5); the other end of the second hydraulic cylinder (5) is hinged to the terminal section (3.3); the terminal section (3.3) is connected via a connecting sling (6) There is a hanging plate (7), the folding boom (3) is provided with a main pulley assembly (8) for controlling the connecting sling (6), and anti-sway devices (9) are symmetrically installed on the left and right sides of the upper end surface of the slewing bearing (2), and the anti-sway device (9) is connected to the hanging plate (7) through an auxiliary rope (10). The two symmetrically arranged auxiliary ropes (10) and the hanging plate (7) connected to the sling (6) form a triangular stable structure, and the anti-sway device (9) controls the anti-sway of the hanging plate (7) by dragging the auxiliary ropes (10).

2. A marine crane according to claim 1, characterized in that: The anti-roll device (9) comprises an anti-roll winch (9.1), a folding mechanical arm (9.2) and a guide wheel device (9.3); the guide wheel device (9.3) is arranged at the outer end of the folding mechanical arm (9.2); and the auxiliary rope (10) is connected to the anti-roll winch (9.1) through the guide wheel device (9.3).

3. The marine crane according to claim 1, characterized in that: A main winch (13) is provided on the slewing bearing (2), and the connecting sling (6) is connected to the main winch (13).

4. A marine crane according to claim 3, characterized in that: The main pulley assembly (8) comprises a first pulley (8.1), a second pulley (8.2), a third pulley (8.3), a fourth pulley (8.4) and a fifth pulley (8.5); the first pulley (8.1) is arranged at the upper end of the base section (3.1); the second pulley (8.2) and the third pulley (8.3) are respectively arranged at the two ends of the middle section (3.2); the fourth pulley (8.4) and the fifth pulley (8.5) are respectively arranged at the two ends of the end section (3.3); the connecting sling (6) is connected to the hanging plate (7) through the main winch (13), the first pulley (8.1), the second pulley (8.2), the third pulley (8.3), the fourth pulley (8.4) and the fifth pulley (8.5) in sequence.

5. The marine crane according to claim 1, characterized in that: A hook (7.1) is fixed at the central axis of the lower end surface of the hanging plate (7).

6. The marine crane according to claim 1, characterized in that: A driving motor (11) is provided on the base (1), a driving gear (11.1) is provided on the output shaft of the driving motor (11), and a driven rack (2.1) meshing with the driving gear (11.1) is provided on the outer side of the slewing bearing (2), and the slewing bearing (2) is driven to rotate by the cooperation between the driving gear (11.1) and the driven rack (2.1).

7. The marine crane according to claim 1, characterized in that: A lug plate (7.2) is fixed to the upper end surface of the hanging plate (7), a connecting hole (7.3) is provided on the lug plate (7.2), and the auxiliary rope (10) is connected to the connecting hole (7.3) via a disassembly buckle (12).

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