A double-boom lifting type continuous ship unloader adaptable to high water level difference

Abstract

The invention relates to a double-arm lifting type continuous ship unloader which can be applied to high water level difference, comprising: a material lifting mechanism (2) for extracting material in a ship (0); a lifting arm mechanism (3) for adjusting the height of the material lifting mechanism (2); a lifting main beam mechanism (5) for lifting the height of the lifting arm mechanism (3); a fixed portal mechanism (4) for fixing the lifting main beam mechanism (5); and a floating unloading mechanism (6) for conveying the material in the ship (0) from the material lifting mechanism (2) to a wharf belt conveyor (1). The material lifting mechanism (2) is arranged on the lifting arm mechanism (3), and the lifting arm mechanism (3) is in sliding lifting connection with one end of the lifting main beam mechanism (5). Compared with the prior art, the invention has the advantages that the double-arm lifting type makes the efficient and environment-friendly continuous ship unloader applicable to wharfs with high water level difference.

Description

Technical Field

[0001] This invention relates to the field of continuous bulk cargo unloaders, and more specifically to a double-arm lifting continuous unloader that can adapt to high water level differences. Background Technology

[0002] The volume of bulk cargo transactions is an important indicator of a region's economic development. Water transport, with its advantages of large capacity, low cost, and low energy consumption, is the main mode of bulk cargo transportation.

[0003] The characteristics of wharves along the Yangtze River are large water level differences, with maximum water level variations reaching 30-40 meters, primarily employing vertical high-pile wharves. The vessels handled are all riverboats, and their size is relatively small. The main challenge for unloading equipment lies in the significant changes in the height of the unloading operation surface caused by water level fluctuations.

[0004] Currently, specialized bulk cargo unloading terminals in the Yangtze River basin mainly use bridge-type grab unloaders, such as... Figure 9 The grab unloader is reliable and highly productive; in particular, the grab bucket is connected to the main unit by a flexible steel wire rope, and the problem of large variations in the working surface height mentioned earlier can be solved by adjusting the length of the wire rope. However, the biggest problem with the grab unloader is environmental pollution. Dust flies when the grab bucket is opened and closed, and material spills during the operation of the grab bucket. Although some dust suppression measures have been implemented, they cannot fundamentally solve the problem.

[0005] Continuous unloaders offer high productivity and superior environmental performance due to the continuous lifting and conveying of materials within a closed space. For different materials, existing continuous unloaders mainly include L-type chain bucket unloaders, such as... Figure 10 Spiral unloaders, such as Figure 11 , such as scraper unloaders Figure 12 These continuous unloaders are all boom-type, characterized by: extracting material from the ship's hold via a rigid lifting arm mounted at the boom head; and maneuvering the boom by tilting it up and down. Figure 13 This allows for changes in the working face height. Due to the limited tilt angle of the boom, this model can only employ two methods to address the issue of working face height changes caused by large water level differences: Figure 13 One option is to lengthen the boom, L, but L is limited by the ship's width. Another option is to lengthen the rigid lifting boom, B. However, for wharves with large water level differences, lengthening B would prevent the material from being unloaded from the container, such as... Figure 14 Therefore, existing continuous unloading machine models are not suitable for these wharves with high water level differences. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects of the prior art and provide a double-arm lifting continuous ship unloader that is efficient and environmentally friendly and can be used in wharves with high water level differences.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A double-boom lifting continuous ship unloader adaptable to high water level differences, the ship unloader comprising:

[0009] Material lifting mechanism, used to extract materials from ships;

[0010] The lifting boom mechanism is used to adjust the height of the material lifting mechanism;

[0011] The lifting beam mechanism is used to adjust the height of the lifting boom mechanism;

[0012] The fixed gantry mechanism is used to provide the track for the lifting main beam mechanism to move up and down and rotate.

[0013] A floating unloading mechanism is used to transfer materials from a ship's material hoisting mechanism to a dock conveyor belt.

[0014] The material lifting mechanism is mounted on the lifting boom mechanism, which is slidably and vertically connected to one end of the lifting main beam mechanism. The lifting main beam mechanism is vertically and vertically connected to the fixed gantry mechanism via a wire rope mechanism. The dock conveyor is generally fixed on the dock. The fixed gantry mechanism is located on the dock. During operation, the ship is located below the material lifting mechanism.

[0015] The combination of the two lifting mechanisms mentioned above ensures that when the ship unloader operates on a vertical high-pile wharf with a large water level difference in the middle and upper reaches of the Yangtze River, it can unload the ship at both the lowest and highest water levels, and also ensure that the material head can be released from the bin when the ship is empty at the highest water level, thus meeting the needs of the wharf for ship unloading operations.

[0016] Furthermore, the material lifting mechanism includes:

[0017] Transfer pump head, used to extract materials from ships;

[0018] The receiving belt conveyor is used to transfer materials extracted by the extraction head;

[0019] The trolley is used to carry the transfer pump head and the receiving belt conveyor.

[0020] The trolley is slidably connected to the lifting boom mechanism, and the transfer and feeding head and receiving belt conveyor are located on the trolley.

[0021] Furthermore, the trolley is also equipped with a cleaning machine lift for transporting cleaning machines at the dock.

[0022] The trolley is equipped with a cleaning machine lift. When the unloading process enters the cleaning stage, the trolley can put the cleaning machine into the ship's hold. With the cooperation of the cleaning machine, the unloader can complete the cleaning. The above operations can be completed by the unloader itself without the need for other equipment.

[0023] Furthermore, the lifting boom mechanism includes a horizontal front beam and a vertical main beam connected to each other. The front end of the horizontal front beam is provided with a boom material conveyor for conveying materials, and the vertical main beam is slidably lifted and lowered in connection with the lifting main beam mechanism.

[0024] After the material lifting mechanism extracts the material from the ship's hold, it is transferred to the boom material conveyor via the receiving belt conveyor, and then transferred to the dock belt conveyor via the floating unloading mechanism. All links are closed, with no dust leakage, ensuring the environmental friendliness of the unloading process.

[0025] The transfer and extraction head is installed on a trolley, which travels on the horizontal front beam. Through the movement of the trolley, the transfer and extraction head can cover the working surface in the width direction of the ship's hold.

[0026] Furthermore, the horizontal front beam and the vertical main beam are hinged together via boom hinge points;

[0027] The vertical main beam is equipped with a trapezoidal frame and a counterweight arm at its top.

[0028] The end of the horizontal front beam away from the boom hinge point is connected to the top of the trapezoidal frame via a front tie rod.

[0029] The balance boom is provided with a balance weight at the end away from the boom hinge point. The balance weight is located on the balance boom, and the balance boom is connected to the top of the trapezoidal frame through a rear tie rod.

[0030] The boom counterweight installed at the rear of the boom ensures that the center of gravity of the trolley, the transfer and material extraction head, and the boom lifting mechanism remains within the shape of the vertical main beam when the trolley is operating in any position, thus guaranteeing the stability of the boom lifting mechanism during lifting. The horizontal front beam and the boom counterweight are connected to the vertical main beam via an A-frame structure, forming a stable structure.

[0031] Furthermore, the fixed gantry mechanism includes gantry support legs, an upper lifting pulley, and a central cylinder, and the lifting main beam mechanism includes a main beam and a lower lifting pulley;

[0032] The main beam is sleeved on the outside of the central cylinder. The upper lifting pulley is set at the top of the central cylinder, and the lower lifting pulley is set on the main beam and located at the corresponding position below the upper lifting pulley. The wire rope mechanism connects the fixed gantry mechanism and the lifting main beam mechanism through the upper and lower lifting pulleys.

[0033] When the main beam lifting wire rope mechanism is working, the vertical distance between the lower lifting pulley and the upper lifting pulley can be adjusted to enable the lifting boom mechanism to move up and down relative to the central cylinder.

[0034] Furthermore, a top pulley beam is provided above the central cylinder, the upper lifting pulley is fixed on the top pulley beam, and a slewing bearing is provided between the central cylinder and the top pulley beam;

[0035] The main beam is equipped with a rotary assembly that allows the lifting mechanism to rotate relative to the central cylinder.

[0036] The central cylinder has a circular cross-section, and the main beam is fitted around the outside of the central cylinder, allowing it to move up and down along the cylinder. After unloading operations are completed, this ensures that the transfer and extraction head can exit the hold and the vessel can leave the dock. When the slewing assembly rotates, the top pulley beam can follow the main beam and rotate around the central cylinder. When the transfer and extraction head needs maintenance or during typhoon and wind protection, the entire machine can rotate to be parallel to or behind the dock shoreline.

[0037] Furthermore, the gantry support legs are fixed below the central column to support the central column, and a traveling trolley is provided below the gantry support legs so that the entire equipment can move along the wharf shoreline; the end of the main beam away from the lifting boom mechanism is provided with a main beam counterweight and a machine room for controlling the wire rope mechanism and the slewing assembly.

[0038] The main beam is equipped with a machine room and counterweight at its tail end. This ensures that the center of gravity of the lifting section remains within the shape of the central cylinder during the lifting mechanism's vertical movement, reducing the additional bending moment acting on the central cylinder and ensuring the smoothness of the lifting motion. The ship unloader is connected to the traveling trolley via gantry outriggers, allowing the entire machine to move along the wharf shoreline.

[0039] Furthermore, the main beam is equipped with a lifting assembly that allows the lifting boom mechanism to move up and down relative to the main beam.

[0040] A lifting assembly is installed in front of the main beam, which can adjust the height of the lifting boom mechanism relative to the dock surface, ensuring that the material transfer head can reach all working surfaces inside the ship's hold under any operating conditions.

[0041] Furthermore, a hopper is provided above the dock conveyor belt, and one end of the floating unloading mechanism is hinged to the lifting boom mechanism, while the other end is connected to the hopper through a swing chute.

[0042] One end of the swaying chute is hinged to the floating unloading mechanism, while the other end is rotatably engaged inside the hopper. The presence of the swaying chute ensures that the floating unloading mechanism and the dock conveyor remain in a closed state when the swaying chute is raised or lowered, thus ensuring normal material transport.

[0043] Compared with the prior art, the present invention has the following advantages:

[0044] (1) In this invention, there is a combination of two lifting mechanisms, which can ensure that when the unloading machine operates on the vertical high-pile wharf with a large water level difference in the middle and upper reaches of the Yangtze River, it can unload the ship at the lowest and highest water levels, and can also ensure that the material head can be released when the ship is empty at the highest water level, so as to meet the requirements of the wharf unloading operation for the unloading machine.

[0045] (2) In this invention, the trolley is equipped with a cleaning machine lifter. When the unloading enters the cleaning stage, the trolley can put the cleaning machine into the ship's hold. With the cooperation of the cleaning machine, the unloading machine can achieve cleaning. The above operations do not require the cooperation of other equipment and the unloading machine can complete them by itself.

[0046] (3) In this invention, the central cylinder has a circular cross-section, and the main beam is fitted around the outside of the central cylinder, allowing it to move up and down along the central cylinder. After the unloading operation is completed, the transfer and material extraction head can be released from the bin, and the ship leaves the working dock. When the slewing assembly rotates, the top pulley beam can follow the main beam and rotate around the central cylinder. When the transfer and material extraction head needs maintenance or is in a typhoon-proof state, the whole machine can be rotated to be parallel to or behind the dock shoreline;

[0047] (4) Overall, this invention completely overturns the existing continuous unloading machine model. Through the lifting of two boom systems, it can realize continuous unloading operations on wharves with high water level differences, solving the problems that existing models cannot solve. It can be widely used in vertical high-pile wharves with large water level differences in the Yangtze River Basin, and can solve the key problems in the comprehensive green transformation of the Yangtze River Economic Belt. Attached Figure Description

[0048] Figure 1 This is the overall layout diagram of the ship unloader in Example 1;

[0049] Figure 2 This is a structural diagram of the trolley in Example 1;

[0050] Figure 3 This is a diagram of the lifting boom mechanism in Example 1;

[0051] Figure 4 This is a diagram of the fixed gantry mechanism in Example 1;

[0052] Figure 5 This is a diagram of the lifting main beam mechanism in Example 1;

[0053] Figure 6 This is a diagram of ship operations during low water levels in Example 1;

[0054] Figure 7 This is a diagram of ship operations during high water levels in Example 1;

[0055] Figure 8 This is a schematic diagram of the ship leaving the hold in Example 1;

[0056] Figure 9 This is a schematic diagram of an existing bridge-type grab unloader.

[0057] Figure 10 This is a schematic diagram of an existing L-shaped chain bucket continuous unloader.

[0058] Figure 11 This is a schematic diagram of an existing spiral continuous unloader.

[0059] Figure 12 A schematic diagram of an existing scraper continuous unloader.

[0060] Figure 13 This is a diagram showing the operation of an L-type chain bucket continuous unloader at a wharf with a high water level difference.

[0061] Figure 14 This is a diagram showing the discharge situation of the L-type chain bucket continuous unloader after the rigid material handling arm has been lengthened.

[0062] The diagram shows the following components: Ship 0, Dock Conveyor 1, Material Lifting Mechanism 2, Receiving Conveyor 20, Cleaning Machine 21, Cleaning Machine Lifter 22, Trolley 23, Transfer Material Extraction Head 24, Lifting Boom Mechanism 3, Boom Material Conveyor 30, Front Tie Rod 31, Trapezoidal Frame 32, Rear Tie Rod 33, Balance Boom 34, Boom Balance Counterweight 35, Horizontal Front Beam 36, Boom Hinge Point 37, Vertical Main Beam 38, Fixed Gantry Mechanism 4, Top Pulley Beam 41, Slewing Bearing 42, Upper Lifting Pulley 43, Central Column 44, Gantry Leg 45, Traveling Trolley 46, Lifting Main Beam Mechanism 5, Main Beam 51, Lifting Assembly 52, Lower Lifting Pulley 53, Main Beam Counterweight 54, Machine Room 55, Floating Unloading Mechanism 6, Wire Rope Mechanism 7, Dock 8, Slewing Assembly 9. Detailed Implementation

[0063] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. Example

[0064] A twin-boom lifting continuous ship unloader adaptable to high water level differences, such as Figure 1 The ship unloader includes: a material lifting mechanism 2 for extracting materials from the ship 0; a lifting boom mechanism 3 for adjusting the height of the material lifting mechanism 2; a lifting main beam mechanism 5 for raising the height of the lifting boom mechanism 3; a fixed gantry mechanism 4 for fixing the lifting main beam mechanism 5; and a floating unloading mechanism 6 for conveying materials from the ship 0 from the material lifting mechanism 2 to the dock conveyor belt 1.

[0065] The material lifting mechanism 2 is mounted on the lifting boom mechanism 3. The lifting boom mechanism 3 is slidably and vertically connected to one end of the lifting main beam mechanism 5. The lifting main beam mechanism 5 is vertically and vertically connected to the fixed gantry mechanism 4 through the wire rope mechanism 7. The dock conveyor belt 1 is generally fixed on the dock 8. The fixed gantry mechanism 4 is located on the dock 8. During operation, the ship 0 is located below the material lifting mechanism 2.

[0066] The combination of the two lifting mechanisms mentioned above ensures that when the ship unloader operates on a vertical high-pile wharf with a large water level difference in the middle and upper reaches of the Yangtze River, it can unload the ship at both the lowest and highest water levels, and also ensure that the material head can be released from the bin when the ship is empty at the highest water level, thus meeting the needs of the wharf for ship unloading operations.

[0067] like Figure 2 The material lifting mechanism 2 includes: a transfer and extraction head 24 for extracting materials from the ship 0; a receiving conveyor belt 20 for receiving materials from the ship 0; and a trolley 23 for carrying the transfer and extraction head 24 and the receiving conveyor belt 20. The trolley 23 is slidably connected to the lifting boom mechanism 3, and the transfer and extraction head 24 and the receiving conveyor belt 20 are mounted on the trolley 23. The trolley 23 is also equipped with a cleaning machine lifter 22 for transporting the cleaning machine 21 on the dock 8.

[0068] The trolley 23 is equipped with a cleaning machine lift 22. When the unloading process enters the cleaning stage, the trolley 23 can put the cleaning machine 21 into the ship's hold. With the cooperation of the cleaning machine 21, the unloader can complete the cleaning. The above operations do not require the cooperation of other equipment and can be completed by the unloader itself.

[0069] like Figure 3 The lifting boom mechanism 3 includes a horizontal front beam 36 and a vertical main beam 38 that are connected to each other. The front end of the horizontal front beam 36 is provided with a boom material conveyor 30 for conveying materials. The vertical main beam 38 is slidably lifted and lowered to the lifting main beam mechanism 5.

[0070] After the material lifting mechanism 2 extracts the material from the ship's hold 0, it is transferred to the boom material conveyor 30 via the receiving belt conveyor 20, and then transferred to the dock belt conveyor 1 via the floating unloading mechanism 6. All links are closed, with no dust leakage, ensuring the environmental friendliness of the unloading process.

[0071] The transfer and extraction head 24 is installed on the trolley 23, which travels on the horizontal front beam 36. Through the movement of the trolley 23, the transfer and extraction head 24 can cover the working surface in the 0-hull width direction of the ship.

[0072] The horizontal front beam 36 and the vertical main beam 38 are hinged at the boom hinge point 37; the top of the vertical main beam 38 is provided with a trapezoidal frame 32 and a counterweight boom 34; the end of the horizontal front beam 36 away from the boom hinge point 37 is connected to the top of the trapezoidal frame 32 through a front tie rod 31; the end of the counterweight boom 34 away from the boom material conveyor 30 is provided with a boom counterweight 35, which is connected to the top of the trapezoidal frame 32 through a rear tie rod 33.

[0073] The boom counterweight 35, installed at the rear of the boom 34, ensures that the center of gravity of the trolley 23, the transfer and material extraction head 24, and the lifting boom mechanism 3 remains within the shape of the vertical main beam 38 when the trolley 23 is operating in any position, thus ensuring the stability of the lifting boom mechanism 3 during lifting. The horizontal front beam 36 and the boom counterweight 35 are connected to the vertical main beam 38 via an A-frame structure, forming a stable structure.

[0074] like Figure 4-5 The fixed gantry mechanism 4 includes a gantry support leg 45, an upper lifting pulley 43, and a central cylinder 44. The lifting main beam mechanism 5 includes a main beam 51 and a lower lifting pulley 53. The main beam 51 is sleeved on the outside of the central cylinder 44. The upper lifting pulley 43 is located at the top of the central cylinder 44, and the lower lifting pulley 53 is located on the main beam 51 and at a corresponding position below the upper lifting pulley 43. The wire rope mechanism 7 connects the fixed gantry mechanism 4 and the lifting main beam mechanism 5 through the upper lifting pulley 43 and the lower lifting pulley 53.

[0075] When the main beam lifting wire rope mechanism 7 is working, the vertical distance between the lower lifting pulley 53 and the upper lifting pulley 43 can be adjusted so that the lifting boom mechanism 3 can move up and down relative to the central cylinder 44.

[0076] A top pulley beam 41 is provided above the central cylinder 44, and an upper lifting pulley 43 is fixed on the top pulley beam 41. A slewing bearing 42 is provided between the central cylinder 44 and the top pulley beam 41. A slewing assembly 9 for controlling the rotation of the main beam 51 is provided on the main beam 51. However, if it is not needed, the slewing assembly 9 may not be provided. A machine room 55 for controlling the wire rope mechanism 7 and the slewing assembly 9 is provided at the end of the main beam 51 away from the lifting boom mechanism 3.

[0077] The central cylinder 44 has a circular cross-section, and the main beam 51 is fitted around the outside of the central cylinder, allowing it to move up and down along the central cylinder. After the unloading operation is completed, the transfer and extraction head 24 can be released from the hold, and the ship leaves the working dock. When the rotating assembly 9 rotates, the top pulley beam 41 can follow the main beam 51 and rotate around the central cylinder 44. When the transfer and extraction head 24 needs maintenance or is under typhoon and wind protection conditions, the entire machine can be rotated to be parallel to or behind the dock shoreline.

[0078] The portal frame support leg 45 is fixed below the central column 44, and a traveling trolley 46 is located below the portal frame support leg 45. A main beam counterweight 54 is located at the end of the main beam 51 away from the lifting boom mechanism 3. The machine room 55 and the main beam counterweight 54 are installed at the tail of the main beam 51, which ensures that the center of gravity of the lifting part is within the shape of the central column 44 when the lifting main beam mechanism 5 is raised and lowered, thereby reducing the additional bending moment acting on the central column 44 and ensuring the smoothness of the lifting movement. The ship unloader is connected to the traveling trolley 46 through the portal frame support leg 45, allowing the entire machine to move along the wharf shoreline.

[0079] The main beam 51 is equipped with a lifting assembly 52 for controlling the lifting of the lifting boom mechanism 3. The lifting assembly 52 is installed in front of the main beam 51, which can adjust the height of the lifting boom mechanism 3 relative to the dock surface, ensuring that the transfer and material extraction head 24 can reach all working surfaces in the ship's hold under any operating conditions.

[0080] A hopper is installed above the dock conveyor belt 1. One end of the floating unloading mechanism 6 is hinged to the lifting boom mechanism 3, and the other end is connected to the hopper through a swing chute. One end of the swing chute is hinged to the floating unloading mechanism 6, and the other end is rotatably engaged inside the hopper. The presence of the swing chute ensures that the floating unloading mechanism 6 and the dock conveyor belt 1 are always in a closed state when the floating unloading mechanism 6 is raised or lowered, by adjusting the angle of the swing chute, thus ensuring normal material conveying.

[0081] Working principle:

[0082] Scenario 1: Ships leaving and docking, such as Figure 8

[0083] 1. The wire rope mechanism 7 lifts the main beam mechanism 5 to the highest position of the central cylinder 44 in the fixed gantry mechanism 4.

[0084] 2. The lifting assembly 52 raises the lifting boom mechanism 3 to its highest position relative to the main beam 51.

[0085] 3. Vessels may leave or berth at any time.

[0086] Scenario 2: Unloading operations, such as Figure 6-7

[0087] 1. Based on the water level, ship, and material level, the wire rope mechanism 7 lowers the lifting main beam mechanism 5 to the appropriate height position of the central cylinder 44 in the fixed gantry mechanism 4.

[0088] 2. The lifting assembly 52 lowers the lifting boom mechanism 3 to a reasonable height position relative to the main beam 51.

[0089] 3. The material transfer head 24 reaches the working surface for unloading operations. When the material of the previous layer is removed and the material of the next layer is excavated, the height of the lifting boom mechanism 3 relative to the main beam 51 is adjusted first. Only when the height of the lifting boom mechanism 3 relative to the main beam 51 can no longer be adjusted, the height of the lifting main beam mechanism 5 relative to the central cylinder 44 is then adjusted.

[0090] 4. The material lifting mechanism 2 continuously lifts materials by moving back and forth on the horizontal front beam 36.

[0091] 5. The traveling trolley 46 allows the entire machine to move along the shoreline to adjust the working point in the direction of the ship's length.

[0092] Scenario 3: Maintenance, wind and typhoon prevention, such as Figure 8

[0093] 1. Adjust the entire device to the state of Scene 1.

[0094] 2. The slewing assembly 9, through the lifting main beam mechanism 5, rotates the lifting boom mechanism 3, material lifting mechanism 2, etc., together to a position parallel to the wharf shoreline or a specified angle.

[0095] 3. The system can be fixed for wind and typhoon protection according to the requirements of the dock, or the system can be inspected and repaired.

[0096] Scenario 4: Clearance machine hoisting, such as Figure 8

[0097] 1. Adjust the entire device to the state of Scene 1.

[0098] 2. The slewing assembly 9 rotates the lifting boom mechanism 3, material lifting mechanism 2, etc. to a specified angle by lifting the main beam mechanism 5.

[0099] 3. The trolley 23 travels to the top of the cleaning machine 21 on the dock, and the cleaning machine lifter 22 works to lift the cleaning machine 21 to the highest position.

[0100] 4. When the slewing component 9 is working, the lifting boom mechanism 3, the material lifting mechanism 2, etc., return to their original working positions, perpendicular to the shoreline.

[0101] 5. When the trolley 23 moves to the area of ​​the ship's hatch, the cleaning machine lift 22 operates to put the cleaning machine into the ship's hatch.

[0102] In summary, this invention enables continuous unloading operations at wharves with high water level differences through the lifting of two boom systems, solving problems that existing models cannot address. It can be widely applied to vertical high-pile wharves in the Yangtze River basin with large water level differences, improving the efficiency of specialized unloading while being environmentally friendly and energy-saving.

[0103] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A double-boom lifting continuous ship unloader adaptable to high water level differences, characterized in that, The ship unloader includes: Material lifting mechanism (2) is used to extract materials from the ship (0); The lifting boom mechanism (3) is used to adjust the height of the material lifting mechanism (2); The lifting main beam mechanism (5) is used to adjust the height of the lifting boom mechanism (3); The fixed gantry mechanism (4) is used to provide a track for the lifting main beam mechanism (5) to move up and down and rotate. A floating unloading mechanism (6) is used to transport materials from the ship (0) to the material lifting mechanism (2) and then to the dock conveyor (1). The material lifting mechanism (2) is mounted on the lifting boom mechanism (3). The lifting boom mechanism (3) is slidably connected to one end of the lifting main beam mechanism (5). The lifting main beam mechanism (5) is connected to the fixed gantry mechanism (4) through the wire rope mechanism (7). The fixed gantry mechanism (4) is located on the dock (8). During operation, the ship (0) is located below the material lifting mechanism (2).

2. The double-arm lifting continuous ship unloader adaptable to high water level differences according to claim 1, characterized in that, The material lifting mechanism (2) includes: Transfer feed head (24) is used to extract materials from the ship (0); The receiving belt conveyor (20) is used to transfer the material extracted by the extraction head (24); The trolley (23) is used to carry the transfer feed head (24) and the receiving belt conveyor (20); The trolley (23) is slidably connected to the lifting boom mechanism (3), and the transfer and extraction head (24) and the receiving belt conveyor (20) are located on the trolley (23).

3. The double-arm lifting continuous ship unloader adaptable to high water level differences according to claim 2, characterized in that, The trolley (23) is also equipped with a cleaning machine lift (22) for transporting the cleaning machine (21) on the dock (8).

4. The double-arm lifting continuous ship unloader adaptable to high water level differences according to claim 1, characterized in that, The lifting boom mechanism (3) includes a horizontal front beam (36) and a vertical main beam (38) connected to each other. The horizontal front beam (36) is equipped with a boom material conveyor (30) for conveying materials. The vertical main beam (38) is slidably lifted and lowered in connection with the lifting main beam mechanism (5).

5. A double-boom lifting continuous ship unloader adaptable to high water level differences according to claim 4, characterized in that, The horizontal front beam (36) and the vertical main beam (38) are hinged together by the boom hinge point (37); The vertical main beam (38) is provided with a trapezoidal frame (32) and a balance arm (34) at its top; The end of the horizontal front beam (36) away from the boom hinge point (37) is connected to the top of the trapezoidal frame (32) via a front tie rod (31); The balance boom (34) is provided with a balance weight (35) at one end away from the boom hinge point (37). The balance weight (35) is located on the balance boom (34). The balance boom (34) is connected to the top of the trapezoidal frame (32) through a rear tie rod (33).

6. The double-arm lifting continuous ship unloader adaptable to high water level differences according to claim 1, characterized in that, The fixed gantry mechanism (4) includes a gantry support leg (45), an upper lifting pulley (43) and a central cylinder (44), and the lifting main beam mechanism (5) includes a main beam (51) and a lower lifting pulley (53); The main beam (51) is fitted over the central cylinder (44). The upper lifting pulley (43) is set at the top of the central cylinder (44). The lower lifting pulley (53) is set on the main beam (51) and located at the corresponding position below the upper lifting pulley (43). The wire rope mechanism (7) connects the fixed gantry mechanism (4) and the lifting main beam mechanism (5) through the upper lifting pulley (43) and the lower lifting pulley (53).

7. A double-boom lifting continuous ship unloader adaptable to high water level differences according to claim 6, characterized in that, A top pulley beam (41) is provided above the central cylinder (44), and the upper lifting pulley (43) is fixed on the top pulley beam (41). A rotary bearing (42) is provided between the central cylinder (44) and the top pulley beam (41). The main beam (51) is provided with a rotary assembly (9) that enables the lifting main beam mechanism (5) to rotate relative to the central cylinder (44).

8. A double-boom lifting continuous ship unloader adaptable to high water level differences according to claim 6, characterized in that, The door frame support leg (45) is fixed below the central column (44), and a traveling trolley (46) is provided below the door frame support leg (45); the main beam (51) is provided with a main beam counterweight (54) and a machine room (55) at one end away from the lifting boom mechanism (3).

9. A double-boom lifting continuous ship unloader adaptable to high water level differences according to claim 6, characterized in that, The main beam (51) is provided with a lifting assembly (52) that allows the lifting boom mechanism (3) to move up and down relative to the main beam (51).

10. A double-arm lifting continuous ship unloader adaptable to high water level differences according to claim 1, characterized in that, The dock conveyor (1) is equipped with a hopper above it. One end of the floating unloading mechanism (6) is hinged to the lifting boom mechanism (3), and the other end is connected to the hopper through a swing chute.

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