Shoreside container crane and self-lifting final assembly transportation method

Abstract

The invention relates to the technical field of quayside container crane transportation, and discloses a quayside container crane and a self-lifting final assembly transportation method.The transportation state is that a cart door frame assembly is vertically placed on a deck of a ship, and a rear and front girder assembly is horizontally placed at the self-lifting position of the cart door frame assembly; the length direction of the rear and front girder assembly is parallel to the length direction of the ship, and the upper door frame assembly is placed on a deck of the ship. In the final assembly completion state, the cart door frame assembly is vertically placed at the target position, in the vertical direction, the upper door frame assembly is installed above the cart door frame assembly, and the rear and front girder assembly is installed at the top of the upper door frame assembly. The height of the door frame in the equipment transportation state can be greatly reduced, it is guaranteed that the height of the quay crane in the transportation process is smaller than the bridge clearance height, the front girder of the quay crane equipment can be prevented from being suspended out of a ship deck, the transportation safety is guaranteed, the cart door frame assembly and the rear and front girder assembly can be assembled in advance in a factory, and the general assembly speed of the quay crane equipment is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of shore container crane transportation, and in particular to a shore container crane and a self-lifting assembly and transportation method. Background Art

[0002] With the rapid development of the national and global economies, the port industry is increasingly moving towards inland ports, specialization, and large-scale development. As the main force of port equipment, quay cranes are increasingly in demand for inland port quay cranes.

[0003] In related technologies, by setting up a door frame structure and an upper crossbeam structure, the quay crane can be self-lifted during installation using its own structural components and a winch system, which can improve assembly efficiency.

[0004] When purchasing quay crane equipment at inland river terminals, due to limited clearance heights, they often ship in bulk and assemble it on-site. This solution requires renting large floating cranes at the terminal, which is costly and inefficient due to the impact of flood season water levels.

[0005] When the quay crane equipment is shipped as a complete unit, the height of the quay crane is an important factor affecting transportation, and the length of the quay crane equipment is also an important factor affecting transportation. If the quay crane equipment is suspended outside the ship's deck, it is easy to affect the safety of the waterway, and there is room for improvement. Summary of the Invention

[0006] In view of this, the present invention provides a shore container crane to solve the problem of quay crane transportation safety.

[0007] In a first aspect, the present invention provides a shore container crane, comprising an upper door frame assembly, a vehicle door frame assembly and a rear-front beam assembly; the shore container crane has a transport state and an assembly completion state, wherein, in the transport state: the vehicle door frame assembly is upright placed on the deck of a ship, the rear-front beam assembly is flatly placed in the self-lifting position of the vehicle door frame assembly, the length direction of the rear-front beam assembly is parallel to the length direction of the ship, and the upper door frame assembly is placed on the deck of the ship; in the assembly completion state: the vehicle door frame assembly is upright placed at the target position, in the vertical direction, the upper door frame assembly is installed above the vehicle door frame assembly, and the rear-front beam assembly is installed to the top of the upper door frame assembly.

[0008] Beneficial effects: Splitting the door frame structure of the quay crane into two parts, the upper door frame assembly and the large vehicle door frame assembly, can greatly reduce the height of the door frame when the equipment is in transportation state, ensuring that the height of the quay crane during transportation is less than the bridge clearance height. During transportation, the length direction of the rear-front beam assembly is set parallel to the length direction of the ship to prevent the front beam of the quay crane equipment from overhanging the ship deck, thereby ensuring the safety of transportation. In addition, both the large vehicle door frame assembly and the rear-front beam assembly can be assembled in advance in the factory, which helps to increase the assembly speed of the quay crane equipment at the target location.

[0009] In an optional embodiment, the truck door frame assembly includes a land side lower cross beam, a sea side lower cross beam, two groups of lower door frame plates arranged at relative intervals, and four groups of trucks; the land side lower cross beam and the sea side lower cross beam are arranged at relative intervals, and the two groups of lower door frame plates are respectively fixedly installed at both ends of the length of the land side lower cross beam, and the bottom of any lower door frame plate on the sea side is fixedly connected to the top of the sea side lower cross beam, and the bottom of any lower door frame plate on the land side is fixedly connected to the top of the land side lower cross beam; the truck is respectively installed with a group at both ends of the length of the land side lower cross beam and the end of the length of the sea side lower cross beam.

[0010] Beneficial effects: The lower door frame assembly, consisting of the landside lower crossbeam, the seaside lower crossbeam, the lower door frame sheet and the trolley, can be assembled in advance in the factory, which greatly reduces the workload of on-site assembly and helps to improve on-site assembly efficiency.

[0011] In an optional embodiment, the upper door frame assembly includes two groups of upper door frame sheets; in the transportation state, the two groups of upper door frame sheets are shipped separately, or the two groups of upper door frame sheets are stacked and shipped; in the final assembly completion state, in the vertical direction, the bottoms of the two groups of upper door frame sheets are respectively installed on the tops of the two groups of lower door frame sheets, and the two groups of upper door frame sheets are arranged at relative intervals at the same height.

[0012] Beneficial effect: The upper door frame assembly consisting of two sets of upper door frame sheets can be placed flat on the deck of the ship during transportation, reducing the overall height of the quay crane door frame structure and ensuring that the height of the quay crane during transportation can meet the clearance height of the bridge. During assembly, the upper door frame sheets can be hoisted onto the corresponding lower door frame sheets, which is easy to install.

[0013] In an alternative embodiment, the rear and front girder assembly comprises a front girder, a rear girder, a ladder frame, a land side upper cross beam, a sea side upper cross beam, a rear support rod, a machine house, a trolley assembly, a towing system and a hanging cabin device, the front girder and the rear girder are hingedly connected at their ends close to each other, the hanging cabin device, the machine house, the land side upper cross beam and the sea side upper cross beam are sequentially arranged from the end far from the front girder to the end close to the front girder in the length direction of the rear girder, the bottom of the ladder frame is installed on the sea side upper cross beam through a pin shaft, one end of the rear support rod is connected to the upper part of the ladder frame through a pin shaft, and the other end of the rear support rod is installed on the land side upper cross beam through a pin shaft; the trolley assembly and the towing system are both installed on the lower part of the rear girder.

[0014] Beneficial effects: The rear and front girder assembly can be assembled in advance in the factory, which helps to improve the efficiency of the on-site assembly.

[0015] In an alternative embodiment, in the transportation state, the gantry door frame assembly is vertically placed on the deck of the ship, the rear girder is placed horizontally at the self-lifting position of the gantry door frame assembly, and the front girder is supported and placed horizontally by a walking tool; the ladder frame and the rear support rod are inclined towards the end of the front girder far from the rear girder.

[0016] Beneficial effects: The rear girder is placed horizontally at the self-lifting position of the gantry door frame assembly, and the front girder is supported and placed horizontally by a walking tool, which reduces the center of gravity of the quay crane in transportation, improves the safety of transportation, and places the ladder frame and the rear support rod in an inclined manner, which reduces the height of the quay crane in transportation.

[0017] In an alternative embodiment, in the assembly completion state, the ladder frame is vertically placed on the sea side upper cross beam; the rear and front girder assembly further comprises a pull rod and a luffing wire rope, one end of the pull rod is hingedly connected to the upper part of the ladder frame, the other end of the pull rod is hingedly connected to the front girder, one end of the luffing wire rope is drivingly connected to a winch in the machine house, the other end of the luffing wire rope passes around a pulley at the tower head of the ladder frame and is wound around a pulley arranged on the upper part of the front girder; the rear and front girder assembly is installed to the top of the upper door frame assembly.

[0018] Beneficial effects: During assembly, the ladder frame is reset to be vertical, and the pull rod and the luffing wire rope are reset, which is convenient to operate, helps to improve the assembly efficiency, and does not need to rely on large floating crane equipment, thus reducing the assembly cost.

[0019] In a second aspect, the present invention also provides a self-lifting assembly and transportation method for a shore container crane, which includes: in-factory installation: assembling the truck door frame assembly and the rear-front beam assembly to be shipped respectively, and then hoisting the assembled rear-front beam assembly to be shipped to the self-lifting position on the truck door frame assembly to form a quay crane body in a transportation state; loading: the ship docks at the stern, towing the quay crane body in a transportation state for loading, and hoisting the upper door frame assembly for loading; unloading ashore: the ship docks at the pier, towing the quay crane body in a transportation state ashore to the back yard of the pier, and reserving support space for the front beam at the front edge of the pier; quay assembly: resetting and installing the components on the rear-front beam assembly according to the assembly requirements, resetting and installing the upper door frame assembly on the truck door frame assembly, and forming a quay crane body in an assembled state, and then towing the quay crane body in the assembled state to the front edge of the pier to drop onto the track, and then using a self-lifting method to lift the reset rear-front beam assembly to the top of the upper door frame assembly and install it to complete the assembly.

[0020] Beneficial effects: Since the self-lifting assembly and transportation method of the shore container crane is used for the shore container crane, it has the same effect as the shore container crane and will not be described in detail here.

[0021] In an optional embodiment, the method for installing the rear-front beam assembly in the factory includes: the front beam is laid flat during assembly, supported by a walking tool, and the ladder frame and the rear support rod are both laid down according to the height limit requirements.

[0022] Beneficial effect: The front beam is laid flat during assembly and supported by walking tooling, which can lower the center of gravity of the quay crane during transportation, and lower the ladder frame and rear support rod to ensure that the height of the quay crane during transportation is less than the clearance height of the bridge, which helps to improve the safety of quay crane transportation.

[0023] In an optional embodiment, the method for resetting and installing the components on the rear-front beam assembly according to the final assembly requirements includes: hoisting and resetting both the ladder frame and the rear support rod, hoisting and resetting the pull rod, and then threading the pitch wire rope.

[0024] Beneficial effects: The main assembly work of the rear-front beam assembly is completed in the factory. When assembling at the target position, it is only necessary to hoist and reset the ladder frame and the rear support rod, hoist and reset the pull rod, and then thread the pitch wire rope. The reset is simple and easy to operate, and there is no need for large floating crane equipment, which saves assembly costs and improves assembly efficiency.

[0025] In an optional embodiment, the method for resetting and installing the upper door frame assembly on the vehicle door frame assembly includes: respectively lifting the two groups of upper door frame sheets to the upper part of the corresponding lower door frame sheets, using flange bolts to fix the upper door frame sheets and the corresponding lower door frame sheets, or using welding to fix the upper door frame sheets and the corresponding lower door frame sheets.

[0026] Beneficial effects: the upper door frame piece body and the lower door frame piece body are fixedly connected in a flange bolt pair or welding mode, which can effectively control the assembly height of the whole machine and is simple to operate and high in installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0028] Figure 1 It is a front view of an upper door frame piece body and a lower door frame piece body mounting structure of an embodiment of the present application.

[0029] Figure 2 It is a left view of an upper door frame piece body and a lower door frame piece body mounting structure of an embodiment of the present application.

[0030] Figure 3 It is a front view of a large vehicle door frame assembly overall structure of an embodiment of the present application.

[0031] Figure 4 It is a left view of a large vehicle door frame assembly overall structure of an embodiment of the present application.

[0032] Figure 5 It is a placement structure schematic diagram of a front and rear beam assembly on a large vehicle door frame assembly of an embodiment of the present application.

[0033] Figure 6 It is a left view of a large vehicle door frame assembly and a front and rear beam assembly placement structure on a ship of an embodiment of the present application.

[0034] Figure 7 It is a plan view of a large vehicle door frame assembly and a front and rear beam assembly placement structure on a ship of an embodiment of the present application.

[0035] Figure 8 It is a ship unloading schematic diagram of a shore crane main body in transportation of an embodiment of the present application.

[0036] Figure 9 It is an installation structure schematic diagram of an upper door frame assembly on a large vehicle door frame assembly of an embodiment of the present application.

[0037] Figure 10 It is a front and rear beam assembly reset structure schematic diagram of an embodiment of the present application.

[0038] Figure 11 It is a completed shore crane equipment overall structure schematic diagram of an embodiment of the present application.

[0039] Description of reference numerals:

[0040] 1. Upper door frame assembly; 11. Upper door frame piece; 2. Carriage door frame assembly; 21. Lower door frame piece; 22. Landside lower crossbeam; 23. Seaside lower crossbeam; 24. Carriage; 3. Rear-front beam assembly; 31. Front beam; 32. Rear beam; 33. Ladder frame; 34. Machine room; 35. Carriage assembly; 36. Towing system; 37. Hook device; 38. Landside upper crossbeam; 39. Seaside upper crossbeam; 310. Rear support rod; 311. Pull rod; 312. Pitching wire rope; 4. Traveling tooling; 5. Ship; 6. Quay crane body. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0042] The following combination Figures 1 to 11 , describing embodiments of the present invention.

[0043] According to an embodiment of the present invention, in one aspect, a shore-to-shore container crane is provided, comprising an upper door frame assembly 1, a vehicle door frame assembly 2, and a rear-front beam assembly 3. The shore-to-shore container crane has a transport state and a final assembly state. In the transport state, the vehicle door frame assembly 2 is placed upright on the deck of a vessel 5, the rear-front beam assembly 3 is placed flat on the vehicle door frame assembly 2 in a self-lifting position, the length of the rear-front beam assembly 3 being parallel to the length of the vessel 5, and the upper door frame assembly 1 being placed on the deck of the vessel 5. In the final assembly state, the vehicle door frame assembly 2 is placed upright at a target location, the upper door frame assembly 1 is vertically mounted above the vehicle door frame assembly 2, and the rear-front beam assembly 3 is mounted on top of the upper door frame assembly 1. The target location of this embodiment is the installation location of the shore-to-shore container crane at the target port.

[0044] By splitting the quay crane's door frame structure into an upper door frame assembly 1 and a large vehicle door frame assembly 2, the technical solution of this application significantly reduces the door frame height during transport, ensuring that the height of the quay crane during transport is less than the bridge's headroom. During transport, the length of the rear-front beam assembly 3 is set parallel to the length of the vessel 5 to prevent the quay crane's front beam 31 from overhanging the deck of the vessel 5, ensuring transport safety. Furthermore, both the large vehicle door frame assembly 2 and the rear-front beam assembly 3 can be pre-assembled in the factory, significantly reducing on-site assembly workload and improving the efficiency of shipping assembly.

[0045] In one embodiment, the trolley door frame assembly 2 includes a landside lower crossbeam 22, a seaside lower crossbeam 23, two sets of lower door frame segments 21 spaced apart from each other, and four sets of trolleys 24. The landside lower crossbeam 22 and the seaside lower crossbeam 23 are spaced apart from each other, and the two sets of lower door frame segments 21 are fixedly mounted at either end of the length of the landside lower crossbeam 22. The bottom of each lower door frame segment 21 facing the seaside is fixedly connected to the top of the seaside lower crossbeam 23, and the bottom of each lower door frame segment 21 facing the landside is fixedly connected to the top of the landside lower crossbeam 22. A set of trolleys 24 is mounted at each end of the length of the landside lower crossbeam 22 and the seaside lower crossbeam 23. The lower door frame assembly, consisting of the landside lower crossbeam 22, the seaside lower crossbeam 23, the lower door frame segments 21, and the trolleys 24, can be pre-assembled in the factory, significantly reducing on-site assembly workload and improving on-site assembly efficiency. And can be loaded or unloaded by traction roll-on / roll-off mode, transshipment is convenient.In transport state, large vehicle door frame assembly 2 can also be used as the supporting foundation of rear front beam assembly 3.

[0046] Furthermore, the upper door frame assembly 1 includes two groups of upper door frame sheets 11. In the transport state, the two groups of upper door frame sheets 11 are shipped separately, or the two groups of upper door frame sheets 11 are stacked and shipped. In the final assembly completed state, in the vertical direction, the bottoms of the two groups of upper door frame sheets 11 are respectively installed on the tops of the two groups of lower door frame sheets 21, and the two groups of upper door frame sheets 11 are relatively spaced apart at the same height. The final assembly of the upper door frame sheets 11 and the lower door frame sheets 21 can be connected by flange bolt pairs or by welding. On the one hand, the structural strength of the door frame can be guaranteed, and on the other hand, the operation is simple and the installation efficiency is high. The upper door frame assembly 1 composed of the two groups of upper door frame sheets 11 can be placed flat on the deck of the ship 5 during transportation, reducing the overall height of the quay crane door frame structure, ensuring that the height of the quay crane during transportation can meet the clearance height of the bridge. During final assembly, the upper door frame sheets 11 are hoisted onto the corresponding lower door frame sheets 21, which is easy to install.

[0047] Furthermore, the rear-front beam assembly 3 includes a front beam 31, a rear beam 32, a ladder frame 33, a land-side upper beam 38, a sea-side upper beam 39, a rear support rod 310, a machine room 34, a trolley assembly 35, a festoon system 36, and a hanger device 37. The ends of the front beam 31 and the rear beam 32 that are close to each other are hinged, and the hanger device 37, the machine room 34, the land-side upper beam 38, and the sea-side upper beam 39 are all installed on the rear beam 32. The hanger assembly 37, the machinery room 34, the landside upper crossbeam 38, and the seaside upper crossbeam 39 are arranged in sequence along the length of the rear beam 32, from the end furthest from the front beam 31 to the end closest to it. The bottom of the ladder frame 33 is pinned to the seaside upper crossbeam 39. One end of the rear support rod 310 is pinned to the top of the ladder frame 33, and the other end of the rear support rod 310 is pinned to the landside upper crossbeam 38. The trolley assembly 35 and the festoon system 36 are both mounted on the lower portion of the rear beam 32. The rear and front beam assemblies 3 can be pre-assembled in the factory, improving on-site assembly efficiency.

[0048] In the transport state, the truck door frame assembly 2 is placed upright on the deck of the vessel 5, with the rear beam 32 positioned flat on the truck door frame assembly 2 in its self-lifting position and the front beam 31 supported and leveled by the traveling fixture 4. Both the ladder frame 33 and the rear support rods 310 are tilted toward the end of the front beam 31 away from the rear beam 32. Placing the rear beam 32 flat on the truck door frame assembly 2 in its self-lifting position and the front beam 31 supported and leveled by the traveling fixture 4 lowers the center of gravity of the quay crane during transport. The tilted positioning of the ladder frame 33 and the rear support rods 310 reduces the height of the quay crane during transport, improving transport safety.

[0049] When final assembly is complete, the ladder frame 33 stands upright on the seaside upper crossbeam 39. The rear-front beam assembly 3 also includes a tie rod 311 and a pitching wire rope 312. One end of the tie rod 311 is hinged to the upper portion of the ladder frame 33, and the other end is hinged to the front beam 31. One end of the pitching wire rope 312 is connected to a winch in the machine room 34, while the other end of the pitching wire rope 312 passes over a pulley at the ladder frame 33 tower head and is wound around a pulley on the upper portion of the front beam 31. The rear-front beam assembly 3 is then mounted to the top of the upper door frame assembly 1. During final assembly, the ladder frame 33 is simply reset to its upright position, and the tie rod 311 and pitching wire rope 312 are reset. This is convenient, helps improve final assembly efficiency, and eliminates the need for large floating crane equipment, resulting in low final assembly costs.

[0050] According to an embodiment of the present invention, in another aspect, a self-lifting assembly and transportation method of a shore container crane is provided. The self-lifting assembly and transportation method comprises:

[0051] Installation in the factory: Assemble the vehicle door frame assembly 2 and the rear-front beam assembly 3 to be shipped respectively, then hoist the assembled rear-front beam assembly 3 to be shipped to the self-lifting position on the vehicle door frame assembly 2, and form the quay crane body 6 in the transportation state.

[0052] Specifically, the factory installation method for the rear-front beam assembly 3 includes: During assembly, the front beam 31 is laid flat and supported by the traveling fixture 4, while the ladder frame 33 and rear support rods 310 are lowered according to height restrictions. Laying the front beam 31 flat during assembly and supported by the traveling fixture 4 lowers the center of gravity of the quay crane during transportation. Lowering the ladder frame 33 and rear support rods 310 ensures that the height of the quay crane during transportation is less than the bridge clearance height, thereby improving the safety of quay crane transportation.

[0053] Loading: The vessel 5 is brought aft, and the quay crane body 6 in towed transport mode is loaded onto the vessel. The upper door frame assembly 1 is hoisted and loaded onto the vessel. The vessel 5 is brought aft, and the vehicle door frame assembly 2 is loaded onto the vessel using a towed roll-on / roll-off method. This ensures that the length of the rear and front beam assembly 3 is parallel to that of the vessel 5, ensuring safe transportation.

[0054] Unloading and landing: The stern of the ship 5 is docked at the wharf, and the quay crane body 6 in the transport state is towed ashore to the back yard of the wharf, and a supporting space for the front beam 31 is reserved at the front edge of the wharf.

[0055] Final assembly at the wharf: Reset and install the components on the rear-front beam assembly 3 according to the final assembly requirements, reset and install the upper door frame assembly 1 on the vehicle door frame assembly 2, and form the quay crane body 6 in the final assembly state. Then, tow the quay crane body 6 in the final assembly state to the front edge of the wharf and drop it onto the track. After that, use the self-lifting method to lift the reset rear-front beam assembly 3 to the top of the upper door frame assembly 1 and install it to complete the final assembly.

[0056] The method for resetting and installing the components of the rear-front beam assembly 3 according to final assembly requirements includes hoisting and resetting the ladder frame 33 and rear struts 310, hoisting and resetting the tie rods 311, and then threading the pitching wire ropes 312. The primary assembly of the rear-front beam assembly 3 is completed in-house. During final assembly at the target location, only the ladder frame 33 and rear struts 310, hoisting and resetting the tie rods 311, and then threading the pitching wire ropes 312 are required. This simple and convenient resetting operation eliminates the need for large floating crane equipment, saving assembly costs and improving efficiency.

[0057] The method for resetting and installing the upper door frame assembly 1 on the vehicle door frame assembly 2 includes: hoisting the two sets of upper door frame segments 11 to the upper parts of the corresponding lower door frame segments 21, and fixing the upper door frame segments 11 and the corresponding lower door frame segments 21 with flange bolts, or fixing the upper door frame segments 11 and the corresponding lower door frame segments 21 with welding. Fixing the upper door frame segments 11 and the lower door frame segments 21 with flange bolts or welding can effectively control the assembly height of the entire machine, simplify the operation, and improve installation efficiency.

[0058] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A shore container crane, characterized in that: It includes an upper door frame assembly (1), a vehicle door frame assembly (2) and a rear and front beam assembly (3); The shore container crane has two states: transportation state and final assembly state. Transport state: the vehicle door frame assembly (2) is placed upright on the deck of the ship (5), the rear front beam assembly (3) is placed flat on the self-lifting position of the vehicle door frame assembly (2), the length direction of the rear front beam assembly (3) is parallel to the length direction of the ship (5), and the upper door frame assembly (1) is placed on the deck of the ship (5); Final assembly completed state: the large vehicle door frame assembly (2) is placed upright at the target position, the upper door frame assembly (1) is installed above the large vehicle door frame assembly (2) in the vertical direction, and the rear front beam assembly (3) is installed to the top of the upper door frame assembly (1).

2. The shore container crane according to claim 1, characterized in that: The vehicle door frame assembly (2) comprises a land side lower cross beam (22), a sea side lower cross beam (23), two sets of lower door frame sheets (21) arranged at opposite intervals, and four sets of vehicles (24); The land side lower cross beam (22) and the sea side lower cross beam (23) are arranged relative to each other at intervals, and the two groups of the lower door frame sheets (21) are respectively fixedly installed at both ends of the length of the land side lower cross beam (22), and the bottom of any lower door frame sheet (21) on the sea side is fixedly connected to the top of the sea side lower cross beam (23), and the bottom of any lower door frame sheet (21) on the land side is fixedly connected to the top of the land side lower cross beam (22); The trolley (24) is respectively installed with a group at both ends of the length of the lower cross beam (22) on the land side and at both ends of the length of the lower cross beam (23) on the sea side.

3. The shore container crane according to claim 2, characterized in that: The upper door frame assembly (1) comprises two sets of upper door frame sheets (11); In the transport state, the two groups of upper door frame sheets (11) are shipped separately, or the two groups of upper door frame sheets (11) are stacked and shipped; In the final assembly state, in the vertical direction, the bottoms of the two groups of upper door frame sheets (11) are respectively installed on the tops of the two groups of lower door frame sheets (21), and the two groups of upper door frame sheets (11) are arranged at a relative interval at the same height.

4. The shore container crane according to claim 1, characterized in that: The front-rear beam assembly (3) comprises a front beam (31), a rear beam (32), a ladder frame (33), a land side upper beam (38), a sea side upper beam (39), a rear support rod (310), a machine room (34), a trolley assembly (35), a trolley system (36) and a cabin device (37). The front beam (31) and the rear beam (32) are hinged at their ends close to each other. The cabin device (37), the machine room (34), the land side upper beam (38) and the sea side upper beam (39) are all installed on the rear beam (32). ), the nacelle device (37), the machine room (34), the land side upper cross beam (38) and the sea side upper cross beam (39) are sequentially arranged in the length direction of the rear beam (32) from the end away from the front beam (31) to the end close to the front beam (31), the bottom of the ladder frame (33) is mounted on the sea side upper cross beam (39) through a pin shaft, one end of the rear support rod (310) is connected to the upper part of the ladder frame (33) through a pin shaft, and the other end of the rear support rod (310) is mounted on the land side upper cross beam (38) through a pin shaft; The trolley assembly (35) and the festoon system (36) are both mounted on the lower portion of the rear beam (32).

5. The shore container crane according to claim 4, characterized in that: In the transport state, the vehicle door frame assembly (2) is placed upright on the deck of a ship (5), the rear beam (32) is placed flat on the self-lifting position of the vehicle door frame assembly (2), and the front beam (31) is supported and laid flat by the walking tool (4); The ladder frame (33) and the rear support rod (310) are both inclined toward the end of the front beam (31) away from the rear beam (32).

6. The shore container crane according to claim 4, characterized in that: In the final assembly state, the ladder frame (33) is erected on the upper crossbeam (39) on the sea side; The rear-front beam assembly (3) further includes a pull rod (311) and a pitching wire rope (312), one end of the pull rod (311) is hinged to the upper part of the ladder frame (33), the other end of the pull rod (311) is hinged to the front beam (31), one end of the pitching wire rope (312) is connected to the winch in the machine room (34), and the other end of the pitching wire rope (312) is passed around a pulley at the tower head of the ladder frame (33) and is passed around a pulley on the upper part of the front beam (31); The rear-front beam assembly (3) is mounted on the top of the upper door frame assembly (1).

7. A self-lifting assembly and transportation method for a shore container crane, characterized in that: For a shore container crane according to any one of claims 1 to 6, a self-lifting assembly and transportation method comprises: Installation in the factory: assemble the truck door frame assembly (2) and the rear front beam assembly (3) to be shipped respectively, and then hoist the assembled rear front beam assembly (3) to be shipped to the self-lifting position on the truck door frame assembly (2), thereby forming the quay crane body (6) in the transport state; Loading: The ship (5) docks, the quay crane body (6) in the towing transport state is loaded onto the ship, and the upper door frame assembly (1) is hoisted and loaded onto the ship; Unloading and landing: The ship (5) docks at the pier, and the quay crane (6) in the transport state is pulled ashore to the back yard of the pier, with support space for the front beam (31) reserved at the front edge of the pier; Final assembly at the wharf: Reset and install the components on the rear front beam assembly (3) according to the final assembly requirements, reset and install the upper door frame assembly (1) on the vehicle door frame assembly (2), and form the quay crane body (6) in the final assembly state. Then, pull the quay crane body (6) in the final assembly state to the front edge of the wharf and drop it onto the track. Then, use the self-lifting method to lift the reset rear front beam assembly (3) to the top of the upper door frame assembly (1) and install it to complete the final assembly.

8. The self-lifting assembly and transportation method of a shore container crane according to claim 7, characterized in that: The method for installing the rear front beam assembly (3) in the factory includes: the front beam (31) is laid flat during assembly, supported by the walking tool (4), and the ladder frame (33) and the rear support rod (310) are laid down according to the height limit requirement.

9. The self-lifting assembly and transportation method of a shore container crane according to claim 7, characterized in that: The method for resetting and installing the components on the rear-front beam assembly (3) according to the final assembly requirements includes: hoisting and resetting the ladder frame (33) and the rear support rod (310), hoisting and resetting the pull rod (311), and then threading the pitching wire rope (312).

10. The self-lifting assembly and transportation method of a shore container crane according to claim 7, characterized in that: The method for resetting and installing the upper door frame assembly (1) on the vehicle door frame assembly (2) comprises: hoisting two groups of upper door frame sheets (11) to the upper parts of the corresponding lower door frame sheets (21), and fixing the upper door frame sheets (11) and the corresponding lower door frame sheets (21) by using flange bolts, or fixing the upper door frame sheets (11) and the corresponding lower door frame sheets (21) by welding.

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