Linkage type ship loading and unloading arm

Abstract

The present application relates to fluid handling special equipment technical field, especially a kind of connecting rod type marine handling arm, including handling arm steel structure, connecting pipeline part, drive part and balance system.The connecting rod type marine handling arm of the present application cancels steel cable, directly uses hydraulic cylinder to control inner and outer arm and horizontal rotation, routine maintenance is simple, practical life is enhanced, it is convenient to replace after wearing, personnel operation maintenance is simple and convenient;By adopting multi-connecting rod design, handling arm can be split and transported, which provides conditions for container transportation, reduces transportation cost difficulty;The steel structure of whole handling arm is relatively simple, the inner arm structure cancels support box and tail box, which is easier to manufacture and lighter in weight;Outer arm structure also cancels traditional rope wheel, counterweight system cancels lower rope wheel, the present handling arm reduces weight under the premise of meeting functionality, greatly saves manufacturing cost and maintenance time.

Description

Technical Field

[0001] This invention relates to the field of special equipment for fluid loading and unloading, and in particular to a linkage-type marine loading and unloading arm. Background Technology

[0002] Marine loading booms are specialized equipment used in ports and docks to connect pipelines to ships for loading and unloading liquids. Traditional cable-stayed loading booms consist of a separate steel structure and pipeline. The steel structure supports the pipeline and comprises columns, inner boom supports, and outer boom supports, with the pipeline connected to the steel structure by bolts. The loading boom is complex to manufacture. Its operation involves horizontal rotation, inner boom rotation, and outer boom rotation, driven by three hydraulic cylinders. These cylinders drive steel cables, which are wound around pulleys. The pulleys and steel cables control rotation in three directions. The pulleys increase in size and weight as the pipeline diameter increases. The steel cables prevent the boom from being disassembled for shipping and require regular grease application, increasing maintenance time. The complex steel structure of cable-stayed loading booms involves significant welding time and is relatively cumbersome to manufacture. Summary of the Invention

[0003] The technical problem this invention aims to solve is that traditional cable-operated loading arms are complex to manufacture, and the sheaves increase in size and weight as the pipe diameter increases. The steel cables also prevent the boom from being disassembled into parts for shipping, and the need for regular grease application increases maintenance time. Furthermore, the steel structure of cable-operated loading arms is complex, requiring significant welding time and making manufacturing cumbersome.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a linkage-type marine loading and unloading arm, including a loading and unloading arm steel structure, a connecting pipeline part, a drive part and a balance system; The loading and unloading arm steel structure includes a column, a trunnion box, an inner arm structure, and an outer arm structure. The column and the trunnion box are movably connected by a first slewing bearing, the trunnion box and the inner arm structure are movably connected by a second slewing bearing, and the inner arm structure and the outer arm structure are movably connected by a third slewing bearing. The connecting pipeline section consists of column pipelines installed inside the column, inner arm pipelines installed on the inner arm structure, and outer arm pipelines installed on the outer arm structure. The column pipelines, inner arm pipelines, and outer arm pipelines are connected and communicate with each other through six rotary joints. The drive system includes a horizontal drive mechanism installed between the column and the trunnion box, an inner arm drive mechanism installed between the column and the inner arm structure, and an outer arm drive mechanism installed between the inner arm structure and the outer arm structure. The balancing system includes the main balancing system and the outer arm balancing system.

[0005] The main balancing system is installed at the tail of the inner arm structure, and multiple sets of first counterweights are used to adjust the main balancing system.

[0006] The aforementioned outer arm balancing system adopts a four-bar linkage consisting of a single beam support, an outer arm tie rod, an outer arm structure, and an inner arm structure. The outer arm tie rod and the inner arm structure are balanced, the single beam support and the outer arm structure are parallel, and multiple sets of second counterweights are installed on the outer end of the single beam support.

[0007] The lower end of the outer side of the column is provided with a bottom mounting opening to facilitate the installation of column pipelines.

[0008] Both the first and second counterweights have lateral mounting notches on their sidewalls for easy loading and unloading.

[0009] A lateral connecting bracket for connecting the outer arm drive mechanism is fixed on the inner folding angle arm supported by the single beam. The outer arm drive mechanism is inserted into the lateral connecting bracket on one side and is movably assembled with the lateral connecting bracket. The cylinder section of the outer arm drive mechanism is movably assembled with the inner arm structure through the longitudinally placed upright frame on the inner arm structure.

[0010] The inner arm structure has a tail mounting base fixed to its back for installing the main balancing system. A side guide rod for installing the first counterweight is fixed to the edge of the side wall of the tail mounting base. A side adjusting cylinder is fixedly installed on the side wall of the tail mounting base. The side adjusting cylinder passes through the lateral limiting cylinder on the lateral telescopic end and slides and is limited to the first counterweight inside the first counterweight.

[0011] The column pipeline, inner arm pipeline, and outer arm pipeline are connected and fixed by screws and steel structure.

[0012] Both the inner and outer arm structures are internally reinforced with ribs to enhance strength.

[0013] The beneficial effects of this invention are: (1) The linkage-type marine loading and unloading arm of the present invention eliminates the steel cable and directly uses hydraulic cylinders to control the inner and outer arms and horizontal rotation. It is simple to maintain daily, has a longer service life, is easy to replace after wear, and is simple and convenient for personnel to operate and maintain. (2) By adopting a multi-link design, the loading and unloading arm can be disassembled for transport, which provides conditions for container transportation and reduces transportation costs and difficulties; (3) The steel structure of the entire loading and unloading arm is relatively simple. The inner arm structure is easier to manufacture and the weight is reduced after the support box and tail box are eliminated. (4) The outer boom structure also eliminates the traditional upper rope pulley, and the counterweight system eliminates the lower rope pulley. This loading and unloading boom reduces weight while meeting functionality, greatly saving manufacturing costs and maintenance time. (5) The structure of the entire equipment is more stable, and the safety is greatly improved; (6) By adopting a quick-release counterweight design, the counterweight can be adjusted more conveniently, thereby improving stability under different conditions and reducing adjustment difficulty and cost. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention in its unfolded state.

[0016] Figure 2 This is a schematic diagram of the structure of the present invention in its stored state.

[0017] Figure 3 This is a schematic diagram of the structure in the second state of the present invention.

[0018] Figure 4 This is a schematic diagram of the main balancing system in this invention. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Figure 1 , Figure 2 and Figure 4 The linkage-type marine loading arm shown includes the loading arm steel structure, connecting pipeline section, drive section and balancing system; The loading and unloading arm steel structure includes a column 1, a trunnion box 2, an inner arm structure 3, and an outer arm structure 4. The column 1 and the trunnion box 2 are movably connected by a first slewing bearing 5, the trunnion box 2 and the inner arm structure 3 are movably connected by a second slewing bearing 6, and the inner arm structure 3 and the outer arm structure 4 are movably connected by a third slewing bearing 7. The connecting pipeline section consists of a column pipeline 8 installed inside the column 1, an inner arm pipeline 9 installed on the inner arm structure 3, and an outer arm pipeline 10 installed on the outer arm structure. The column pipeline 8, the inner arm pipeline 9, and the outer arm pipeline 10 are connected and communicate with each other through six rotary joints 12. The drive unit includes a horizontal drive mechanism 13 installed between the column 1 and the trunnion box 2, an inner arm drive mechanism 14 installed between the column 1 and the inner arm structure 3, and an outer arm drive mechanism 15 installed between the inner arm structure 3 and the outer arm structure 4. The horizontal drive mechanism 13, the inner arm drive mechanism 14, and the outer arm drive mechanism 15 are three independent control cylinders that control rotation through extension and retraction.

[0022] To improve the overall stability of the equipment, the balancing system includes a main balancing system 16 and an outer arm balancing system 17.

[0023] During operation, the horizontal drive mechanism 13 on the trunnion box 2 is controlled by a remote control to rotate the trunnion box 2 horizontally along the column 1. The inner arm drive mechanism 14 and outer arm drive mechanism 15 on the inner arm structure 3 are controlled to adjust the tilting and retraction of the inner arm structure 3 and outer arm structure 4 respectively, directly delivering the quick connector to the ship and connecting it to the manifold flange. The entire platform can be retracted when not in use. The inlet flange connects to pipelines on the dock.

[0024] To improve the stability of the inner arm structure 3 during flipping, a main balancing system is installed at the tail of the inner arm structure 3, and multiple sets of first counterweights 161 are used to adjust the main balancing system 16.

[0025] To improve the stability of the outer arm structure 4 during tilting, the outer arm balance system 17 adopts a four-bar linkage consisting of a single beam support 171, an outer arm tie rod 172, an outer arm structure 4, and an inner arm structure 3. The outer arm tie rod 172 and the inner arm structure 3 are balanced, the single beam support 171 and the outer arm structure 4 are parallel, and multiple sets of second counterweights 173 are installed on the outer end of the single beam support 171.

[0026] To facilitate bottom installation, the lower end of the outer side of the column 1 is provided with a bottom mounting opening 18 to facilitate the installation of the column pipeline 8.

[0027] To facilitate lateral loading and unloading, both the first counterweight 161 and the second counterweight 173 have lateral mounting notches 19 on their side walls for easy loading and unloading.

[0028] To facilitate lateral control and tilting, a lateral connecting bracket for connecting the outer arm drive mechanism 15 is fixed on the inner folding angle arm of the single beam support 171. The outer arm drive mechanism 15 is inserted into the lateral connecting bracket on one side of its extended section and is movably assembled with the lateral connecting bracket. The cylinder section of the outer arm drive mechanism 15 is movably assembled with the inner arm structure 3 through the longitudinal upright frame on the inner arm structure.

[0029] The outer arm drive mechanism 15 retracts, thereby causing the single beam support 171 to tilt and adjust. By being installed at the inner angle position of the single beam support 171, the strength of the single beam support 171 can be improved during tilting.

[0030] To facilitate rapid loading and unloading, a tail mounting base 31 for installing the main balancing system 16 is fixed to the back of the inner arm structure 3. A side guide rod 32 for installing the first counterweight 161 is fixed to the edge of the side wall of the tail mounting base 31. A side adjusting cylinder 33 is fixedly installed on the side wall of the tail mounting base 31. The side adjusting cylinder 33 passes through the lateral limiting cylinder 34 on the lateral telescopic end and slides and is limited to the first counterweight 161. The outer arm balancing system 17 has the same structure and function as the main balancing system 16.

[0031] The lateral limiting cylinder 34 is axially sleeved and fixed to the outside of the cylinder body of the lateral adjusting cylinder 33. The lateral limiting cylinder 34 limits the outermost side of the first counterweight 161 through the outer limiting plate. The lateral guide rod 32 guides and limits the side. When the lateral adjusting cylinder 33 extends outward, the outermost first counterweight 161 will disengage from the lateral guide rod 32. At this time, the first counterweight 161 can be disengaged from the lateral limiting cylinder 34 through the lateral mounting notch 19.

[0032] The lateral limiting cylinder 34 includes a body axially sleeved on the side-mounted adjusting cylinder 33 and a tail limiting head axially fixed to the outer end of the body.

[0033] To facilitate installation and fixation, the column pipeline 8, inner arm pipeline 9, and outer arm pipeline 10 are connected and fixed by screws and steel structure.

[0034] To enhance structural strength, reinforcing ribs 20 are fixed inside both the inner arm structure 3 and the outer arm structure 4 to improve strength.

[0035] like Figure 3 As shown, the column 1 can also be designed as a liftable structure, making its adjustment range wider. It consists of a bottom guide column fixed on the dock ground, a telescopic column slidably inserted into the upper end of the bottom guide column, and a lateral lifting cylinder fixed on the outer side of the bottom guide column. The height of the entire loading and unloading arm can be adjusted through the lateral lifting cylinder. The advantage of height adjustment is that it can be adapted to more scenarios without changing the inner arm structure 3 and the outer arm structure 4. At the same time, it can reduce the overall height in the storage state, improving the durability and safety of the equipment.

[0036] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A linkage-type marine loading and unloading boom, characterized in that: The system includes a loading and unloading arm steel structure, connecting pipelines, a drive system, and a balancing system. The loading and unloading arm steel structure includes a column (1), a trunnion box (2), an inner arm structure (3), and an outer arm structure (4). The column (1) and the trunnion box (2) are movably connected by a first slewing bearing (5), the trunnion box (2) and the inner arm structure (3) are movably connected by a second slewing bearing (6), and the inner arm structure (3) and the outer arm structure (4) are movably connected by a third slewing bearing (7). The connecting pipelines consist of a column pipeline (8) installed inside the column (1), an inner arm pipeline (9) installed on the inner arm structure (3), and an outer arm pipeline (10) installed on the outer arm structure (4). The column pipeline (8), the inner arm pipeline (9), and the outer arm pipeline (10) are connected and communicate with each other through six rotary joints (12). The drive system includes a horizontal drive mechanism (13) installed between the column (1) and the trunnion box (2), and a horizontal drive mechanism (13) installed between the column (1) and the trunnion box (2). The inner arm drive mechanism (14) between the column (1) and the inner arm structure (3), and the outer arm drive mechanism (15) installed between the inner arm structure (3) and the outer arm structure (4); the balance system includes a main balance system (16) and an outer arm balance system (17). The main balance system (16) is installed at the tail of the inner arm structure (3). Multiple sets of first counterweights (161) are used to adjust the main balance system (16). The back of the inner arm structure (3) is fixed with a tail mounting seat (31) for installing the main balance system (16). The edge of the side wall of the tail mounting seat (31) is fixed with a side guide rod (32) for installing the first counterweight (161). A side adjustment cylinder (33) is fixedly installed on the side wall of the tail mounting seat (31). The side adjustment cylinder (33) slides through the first counterweight (161) and is limited by the side limit cylinder (34) on the side extension end. The first counterweight (161) has a lateral mounting notch (19) on its side wall for easy loading and unloading.

2. The linkage-type marine loading and unloading boom according to claim 1, characterized in that: The outer arm balancing system (17) adopts a four-bar linkage consisting of a single beam support (171), an outer arm tie rod (172), an outer arm structure (4), and an inner arm structure (3). The outer arm tie rod (172) and the inner arm structure (3) are balanced, the single beam support (171) and the outer arm structure (4) are parallel, and multiple sets of second counterweights (173) are installed on the outer end of the single beam support (171).

3. The linkage-type marine loading and unloading boom according to claim 1, characterized in that: The lower end of the outer side of the column (1) is provided with a bottom mounting opening (18) to facilitate the installation of the column pipeline (8).

4. The linkage-type marine loading and unloading boom according to claim 2, characterized in that: The second counterweight (173) has a lateral mounting notch (19) on its side wall for easy loading and unloading.

5. The linkage-type marine loading and unloading boom according to claim 2, characterized in that: The inner folding angle arm of the single beam support (171) is fixed with a lateral connecting bracket for connecting the outer arm drive mechanism (15). The outer arm drive mechanism (15) extends to one side and is movably assembled with the lateral connecting bracket. The cylinder section of the outer arm drive mechanism (15) is movably assembled with the inner arm structure (3) through the longitudinally placed upright frame on the inner arm structure (3).

6. The linkage-type marine loading and unloading boom according to claim 1, characterized in that: The column pipeline (8), inner arm pipeline (9) and outer arm pipeline (10) are connected and fixed by screws and steel structure.

7. The linkage-type marine loading and unloading boom according to claim 1, characterized in that: The inner arm structure (3) and the outer arm structure (4) are both fixed with reinforcing ribs (20) to improve strength.

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