Lifting system of quay crane and quay crane

Abstract

The present invention relates to a lifting system of a quay crane and a quay crane. The quay crane comprises a leg structure and a beam structure; the leg structure comprises two sea-side legs and two land-side legs arranged at intervals; the beam structure comprises a sea-side beam and a land-side beam, and the two ends of the sea-side beam are suitable for being connected to the two sea-side legs at a set height; the two ends of the land-side beam are suitable for being connected to the two land-side legs at a set height; the lifting system comprises a connecting structure, a first lifting structure and an anti-sway damping device, and the two ends of the sea-side beam and the two ends of the land-side beam are connected to a group of connections; the first lifting structure is a hydraulic lifter, and the top of each sea-side leg and the top of each land-side leg are provided with a group of first lifting structures, and each group of first lifting structures is connected to a corresponding group of connecting structures through a first working rope, and is suitable for lifting the beam structure to a set height; the anti-sway damping device is installed on the beam structure and slidably cooperates with the leg structure.

Description

Technical Field

[0001] The present invention relates to the technical field of port loading and unloading equipment, and in particular to a lifting system of a quay crane and a quay crane. Background Art

[0002] Quay cranes, also known as shore container cranes, have a long history of application in port container unloading terminals, with the advantages of highly automated loading and unloading, stable and efficient. With the development of shipping, container transport ships are gradually becoming larger, especially the emergence of post-Panamax ships, which has put great pressure on the loading and unloading efficiency of ports.

[0003] Shore container cranes are also gradually developing towards large-scale and high-efficiency. At present, the operating speed and outreach of quay cranes have been significantly improved, but large-scale quay cranes are difficult to assemble. The main structure of the quay crane is composed of a leg structure and a beam structure. The beam structure includes a land-side beam, a sea-side beam, a beam and an upper structure (the upper structure includes a ladder frame, a tie rod, a machine room, etc.). The existing beam structure lifting system generally uses a gear rack or a chain plate lifting technology. The gear rack lifting method has a complex structure, cumbersome installation, and high processing precision and cost; the chain plate lifting method is suitable for lifting lightweight items. When lifting the beam structure of a quay crane weighing more than 1,000 tons, the load is limited and the flexibility is low. In the process of lifting and installation, the beam structure may be subject to lateral impact. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the lifting system in the prior art, such as limited load, low flexibility and possible lateral impact force, so as to provide a lifting system and a quay crane with a large load, high flexibility and the ability to buffer lateral impact force during lifting.

[0005] In order to solve the above problems, the present invention provides a lifting system for a quay crane, which comprises a leg structure and a beam structure; the leg structure comprises two sea-side legs and two land-side legs arranged at intervals; the beam structure comprises a sea-side beam and a land-side beam, and the two ends of the sea-side beam are suitable for being connected to the two sea-side legs at a set height respectively; the two ends of the land-side beam are suitable for being connected to the two land-side legs at the set height respectively; the lifting system comprises a connecting structure, a first lifting structure and an anti-sway damping device, and the two ends of the sea-side beam and the two ends of the land-side beam are both connected to a group of the connecting structures; the first lifting structure is a hydraulic lifter, and the top of each sea-side leg and the top of each land-side leg are provided with a group of the first lifting structures, and each group of the first lifting structures is connected to a corresponding group of the connecting structures through a first working rope, and is suitable for lifting the beam structure to the set height; the anti-sway damping device is installed on the beam structure and slidably cooperates with the leg structure.

[0006] The lifting system of the quay crane provided by the present invention further includes a leg structure, and the leg structure includes:

[0007] A first leg, one end of which is detachably connected to the top of the sea-side door leg, and the other end of which extends upward and is connected to the corresponding first lifting structure; the top of each sea-side door leg is matched with one first leg;

[0008] A second leg has one end detachably connected to the top of the land-side door leg, and the other end extends upward and is connected to the corresponding first lifting structure; each top of the land-side door leg is matched with a second leg.

[0009] The lifting system of the quay crane provided by the present invention, the first leg comprises a first leg body and a first lifting lug, one end of the first leg body is detachably connected to the top of the sea-side door leg, and the other end extends upward, the first lifting lug is protrudingly arranged at the top of the side wall of the first leg body facing the adjacent second leg, the corresponding first lifting structure is connected to the top of the first lifting lug, and the corresponding first working rope passes through the first through hole on the first lifting lug and is connected to the first lifting structure;

[0010] The second leg includes a second leg body and a second lifting ear, one end of the second leg body is detachably connected to the top of the land-side door leg, and the other end extends upward, the second lifting ear is protrudingly arranged at the top of the side wall of the second leg body facing the adjacent first leg, the corresponding first lifting structure is connected to the top of the second lifting ear, and the corresponding first working rope passes through the second through hole on the second lifting ear and is connected to the first lifting structure.

[0011] The lifting system of the quay crane provided by the present invention also includes a fixed beam;

[0012] The first leg further includes a third lifting ear, which is protrudingly arranged on the first leg body, located below the first lifting ear, and staggered with the first through hole;

[0013] The second leg also includes a fourth lifting ear, which is protruding from the second leg body, located below the second lifting ear, and staggered with the second through hole; the two ends of the fixed beam are respectively connected to the adjacent third lifting ear and the fourth lifting ear.

[0014] The lifting system of the quay crane provided by the present invention, the first leg also includes a fifth lifting ear, the fifth lifting ear is protrudingly arranged on the side wall of the first leg body facing away from the first lifting ear, and the fifth lifting ear is suitable for being connected to the ground via a first safety rope; the second leg also includes a sixth lifting ear, the sixth lifting ear is protrudingly arranged on the side wall of the second leg body facing away from the second lifting ear, and the sixth lifting ear is suitable for being connected to the ground via a second safety rope.

[0015] The lifting system of the quay crane provided by the present invention, the first leg further comprises a seventh lifting lug, the seventh lifting lug is protrudingly arranged on a side wall facing away from the other first leg;

[0016] The second leg further includes an eighth lifting ear, which is protrudingly arranged on a side wall facing away from the other second leg;

[0017] The lifting system also includes a second lifting structure, which is connected to the ground. A group of the second lifting structures is provided on both sides of every two sea-side door legs and on both sides of every two land-side door legs; each of the seventh lifting ears is connected to the corresponding second lifting structure through a second working rope; each of the eighth lifting ears is connected to the corresponding second lifting structure through a second working rope.

[0018] In the lifting system of the quay crane provided by the present invention, the first lifting structure is a hydraulic lifter, and / or the second lifting structure is a hydraulic lifter.

[0019] The hoisting system of the quay crane provided by the present invention, the anti-sway damping device comprises:

[0020] A base, mounted on the beam structure;

[0021] A floating guide assembly, comprising a floating bracket and a guide wheel adapted to move up and down along the door leg structure, wherein one end of the floating bracket is rotatably connected to the base, and the other end is provided with the guide wheel;

[0022] An elastic buffer component has one end fixed on the base and the other end movably connected to the floating bracket. The elastic buffer component is suitable for applying force to the guide wheel to make it cling to and remain on the door leg structure.

[0023] In the lifting system of the quay crane provided by the present invention, a strip-shaped avoidance hole is provided in the middle part of the floating support, a hinge shaft suitable for connecting with the strip-shaped avoidance hole is fixedly provided on the elastic buffer component, and the hinge shaft passes through the strip-shaped avoidance hole;

[0024] The strip-shaped avoidance hole is suitable for avoiding the displacement of the floating bracket in the vertical direction when the floating bracket rotates, and transmitting the movement of the floating bracket in the horizontal direction to the elastic buffer component.

[0025] This embodiment also discloses a quay crane, comprising:

[0026] The door leg structure comprises a sea side door leg and a land side door leg arranged at a set interval;

[0027] The crossbeam structure comprises a sea side crossbeam and a land side crossbeam, wherein the two ends of the sea side crossbeam are suitable for being connected to the two sea side portal legs at a set height respectively; the two ends of the land side crossbeam are suitable for being connected to the two land side portal legs at the set height respectively; the crossbeam structure is suitable for being lifted to the set height by the lifting system of the above-mentioned quay crane.

[0028] The quay crane disclosed in this embodiment further includes a spacing adjustment device, wherein the sea-side door leg and the land-side door leg are connected by an adjustable connecting beam; the spacing adjustment device includes a first connecting sleeve fixedly arranged on the door leg structure and a second connecting sleeve fixedly arranged on the adjustable connecting beam, a connecting rod connected between the first connecting sleeve and the second connecting sleeve, and an adjuster arranged on the connecting rod and suitable for adjusting and locking the positions of the first connecting sleeve and the second connecting sleeve on the connecting rod;

[0029] The regulator is suitable for adjusting the positions of the first connecting sleeve and the second connecting sleeve on the connecting rod so that the door leg structure and the adjustable connecting beam are moved closer to or farther from each other, thereby adjusting the distance between the two door leg structures.

[0030] In the quay crane provided in this embodiment, the connecting rod is a screw rod penetrating the first connecting sleeve and the second connecting sleeve, and the adjuster is an adjusting nut threadedly connected to the screw rod.

[0031] The present invention has the following advantages:

[0032] 1. The lifting system of the quay crane provided by the present invention comprises a first lifting structure, which is a hydraulic lifter, and has a relatively simple structure, and is convenient to disassemble and install. A group of the first lifting structures is provided at the top of each of the sea-side gate legs and the top of each of the land-side gate legs. Four groups of the first lifting structures can be used to lift heavy objects, and the load is not limited and the flexibility is high. After applying the lifting system of the present invention, the crossbeam structure can be safely and quickly lifted to the set position safely and efficiently, and it is also convenient for the early installation and later removal of the first lifting structure, reducing time and economic costs. The lifting system also includes a connecting structure, and the two ends of the first working rope are respectively connected to the first lifting structure and the connecting structure. The first working rope is not connected to the gate leg structure or the crossbeam structure of the quay crane, and will not cause damage to the quay crane during the lifting process; and the vertical positioning of the first working rope can be ensured during the lifting of the crossbeam structure, further improving the lifting safety of the crossbeam structure of the quay crane. It also has an anti-sway damping device, which guides the lifting of the crossbeam structure during the lifting process, and can buffer the force when subjected to lateral impact loads, reducing the shaking amplitude when subjected to impact loads.

[0033] 2. The quay crane provided by the present invention can efficiently and conveniently fine-tune the distance between the two gantry structures on the sea and land sides through the spacing adjustment device when the crossbeam structure and the two gantry structures cannot be accurately matched, so as to meet the installation requirements. It is not only convenient and fast to operate, but also safer, and can effectively improve the installation efficiency of the gantry structure adjustment device of the quay crane and reduce time and economic costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A front view of a lifting system of a quay crane of the present invention is shown;

[0036] Figure 2 A left side view of a lifting system of a quay crane of the present invention is shown;

[0037] Figure 3 A top view of a lifting system of a quay crane of the present invention is shown;

[0038] Figure 4 A first angle schematic diagram of the first leg or the second leg of the present invention is shown;

[0039] Figure 5A second angle schematic diagram of the first leg or the second leg of the present invention is shown;

[0040] Figure 6 A schematic diagram showing the connection structure of the present invention Figure 1 ;

[0041] Figure 7 A schematic diagram showing the connection structure of the present invention Figure 2 ;

[0042] Figure 8 The front view of the quay crane in the embodiment is shown;

[0043] Fig. 9 Shows Figure 8 A magnified view of the local structure;

[0044] Fig.10 Shows Fig. 9 Side view of

[0045] Fig.11 Shows Fig. 9 A magnified image of point A;

[0046] Fig.12 An enlarged view of a partial structure of the anti-sway damping device is shown;

[0047] Fig.13 Shows Fig. 9 A1-A1 cross-sectional view;

[0048] Fig.14 Shows Fig.13 The enlarged view of point B;

[0049] Fig.15 The schematic diagram of the principle of the quay crane door leg structure adjustment device in the embodiment is shown;

[0050] Fig.16 Shows Fig.15 Partial structural diagram from the perspective of middle C;

[0051] Fig.17 A schematic diagram of the structure of the door leg structure and the connection of the adjustable connecting beam in the embodiment is shown;

[0052] Fig.18 Shows Fig.17 Cross-sectional view along the D1-D1 direction;

[0053] Fig.19 Shows Fig.17 Cross-sectional view along the D2-D2 direction;

[0054] Fig. 20 Shows Fig.18 Sectional view along the E1-E1 direction;

[0055] Fig.21 Shows Fig.19 Cross-sectional view along the E2-E2 direction.

[0056] Description of reference numerals:

[0057] 10. Door leg structure; 101. Plug-in part; 11. Sea-side door leg; 12. Land-side door leg; 13. Adjustable connecting beam; 131. Sheet-shaped opening slot; 132. Avoidance fault tolerance slot; 14. Mounting support;

[0058] 20. Spacing adjustment device; 21. First connecting sleeve; 22. Second connecting sleeve; 23. Connecting rod; 24. Regulator; 241. First adjusting nut; 242. Second adjusting nut; 25. First fixing frame; 26. Second fixing frame; 27. First reinforcing structure; 28. Second reinforcing structure; 29. ​​Reinforcing rib;

[0059] 30. Anti-sway damping device; 301. Base; 3011. Articulated seat; 31. Floating guide assembly; 311. Floating bracket; 3111. Strip avoidance hole; 312. Guide wheel; 313. Hinge shaft; 32. Elastic buffer assembly; 321. Buffer support; 3211. First bracket; 3212. Second bracket; 32121. Connecting part; 32122. Sliding shaft; 322. Elastic member; 323. Limiting member;

[0060] 40. connection structure; 41. clamp; 42. connection end;

[0061] 50. Beam structure; 51. Sea side beam; 52. Land side beam;

[0062] 60. Leg structure; 61. First leg; 611. First leg body; 612. First lifting ear; 613. First through hole; 614. Third lifting ear; 615. Fifth lifting ear; 616. Seventh lifting ear; 617. First connecting piece; 62. Second leg; 621. Second leg body; 622. Second lifting ear; 623. Second through hole; 624. Fourth lifting ear; 625. Sixth lifting ear; 626. Eighth lifting ear; 627. Second connecting piece; 63. Fixed beam;

[0063] 71. first lifting structure; 72. second lifting structure;

[0064] 80. Safety rope; 90. Second working rope. DETAILED DESCRIPTION

[0065] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0069] like Figures 1 to 14As shown, in this embodiment, a lifting system of a quay crane is disclosed, including a quay crane including a leg structure 10 and a beam structure 50; the leg structure 10 includes two sea-side legs 11 and two land-side legs 12 arranged at intervals; the beam structure 50 includes a sea-side beam 51 and a land-side beam 52, and the two ends of the sea-side beam 51 are suitable for being connected to the two sea-side legs 11 at a set height, and the two ends of the land-side beam 52 are suitable for being connected to the two land-side legs 12 at a set height; the lifting system includes a connecting structure 40, a first lifting structure 71 and an anti-sway damping device 3 0, both ends of the sea-side crossbeam 51 and both ends of the land-side crossbeam 52 are connected to a group of the connecting structures 40; the first lifting structure 71 is a hydraulic lifter, and the top of each of the sea-side door legs 11 and the top of each of the land-side door legs 12 are provided with a group of the first lifting structures 71, and each group of the first lifting structures 71 is connected to the corresponding connecting structure 40 through a first working rope, which is suitable for lifting the crossbeam structure 50 to the set height; an anti-sway damping device 30 is installed on the crossbeam structure 50 and slides with the door leg structure 10.

[0070] The lifting system includes a first lifting structure 71, which is a hydraulic lifter with a relatively simple structure and convenient disassembly and installation. A group of the first lifting structures 71 is provided at the top of each sea-side leg 11 and each land-side leg 12. Four groups of first lifting structures 71 can be used to lift heavy objects, with unlimited load and high flexibility. After applying the lifting system of the present invention, the beam structure 50 can be safely and efficiently lifted to the set position, and it is also convenient for the early installation and later removal of the first lifting structure 71, reducing time and economic costs. The lifting system also includes a connecting structure 40, and the two ends of the first working rope are respectively connected to the first lifting structure 71 and the connecting structure 40. The first working rope is not connected to the leg structure 10 or the beam structure 50 of the quay crane, and will not cause damage to the quay crane during the lifting process; and the vertical positioning of the first working rope can be ensured in the process of lifting the beam structure 50, further improving the lifting safety of the beam structure 50 of the quay crane. The anti-sway damping device 30 is provided to guide the lifting of the crossbeam structure 50 during the lifting process, and can buffer the force when subjected to lateral impact loads, thereby reducing the shaking amplitude when subjected to impact loads.

[0071] In this embodiment, the first lifting structure 71 is an 800t hydraulic lifter. The cooperation of four sets of first lifting structures 71 can realize the lifting operation of objects weighing at least 3200t. When lifting the beam structure 50 of the quay crane of 1000t and above, the load is not limited and the flexibility is high.

[0072] The lifting system of the quay crane provided in this embodiment also includes a leg structure 60, which includes a first leg 61 and a second leg 62; one end of the first leg 61 is detachably connected to the top of the sea-side gate leg 11, and the other end extends upward and is connected to the corresponding first lifting structure 71; the top of each sea-side gate leg 11 is matched with a first leg 61; one end of the second leg 62 is detachably connected to the top of the land-side gate leg 12, and the other end extends upward and is connected to the corresponding first lifting structure 71; the top of each land-side gate leg 12 is matched with a second leg 62.

[0073] The lifting system of the quay crane provided in this embodiment includes a connection structure 40 and a leg structure 60, wherein the connection structure 40 is connected to both ends of the sea-side cross beam 51 and the land-side cross beam 52; the lifting system is arranged on the first leg 61 and the second leg 62 of the leg structure 60, and the lifting system is detachably connected to the top of the sea-side gate leg 11 and the land-side gate leg 12 through the leg structure 60, the lifting system is not directly connected to the gate leg structure 10, and the two ends of the first working rope are respectively connected to the first lifting structure 71 and the connection structure 40, and the first working rope is not connected to the gate leg structure 10 or the cross beam structure 50 of the quay crane, and will not cause damage to the quay crane during the lifting process. Moreover, the first lifting structure 71 is connected to the corresponding connection structure 40 through the first working rope, which can ensure the vertical positioning of the first working rope in the process of lifting the cross beam structure 50, and further improve the lifting safety of the cross beam structure 50 of the quay crane.

[0074] In this embodiment, the first leg 61 includes a first leg body 611 and a first lifting lug 612. One end of the first leg body 611 is detachably connected to the top of the sea-side gate leg 11, and the other end extends upward. The first lifting lug 612 is protrudingly arranged at the top of the side wall of the first leg body 611 facing the adjacent second leg 62, and the corresponding first lifting structure 71 is connected to the first lifting lug 612. The first lifting structure 71 is connected to the side of the sea-side gate leg 11 through the first lifting lug 612 to avoid the sea-side cross beam 51, ensuring that the sea-side cross beam 51 can be lifted between the two sea-side gate legs 11, and the positions of the first working rope and the sea-side gate leg 11 are staggered to prevent the first working rope from contacting and rubbing with the cross beam structure 50 or the gate leg structure 10 of the quay crane, and avoid the first working rope from causing damage to the sea-side gate leg 11. The first lifting structure 71 also realizes vertical positioning during the lifting process through the first lifting lug 612 and the connecting structure 40.

[0075] The second leg 62 includes a second leg body 621 and a second lifting ear 622. One end of the second leg body 621 is detachably connected to the top of the landside door leg 12, and the other end extends upward. The second lifting ear 622 is protrudingly arranged at the top of the side wall of the second leg body 621 facing the adjacent first leg 61, and the corresponding first lifting structure 71 is connected to the second lifting ear 622. The second lifting structure 72 is connected to the side of the landside door leg 12 through the second lifting ear 622, avoiding the landside cross beam 52, ensuring that the landside cross beam 52 can be lifted between the two landside door legs 12, and staggering the positions of the first working rope and the landside door leg 12, preventing the first working rope from contacting and rubbing with the cross beam structure 50 or the door leg structure 10 of the quay crane, and avoiding the first working rope from causing damage to the landside door leg 12. The first lifting structure 71 is also vertically positioned during the lifting process through the second lifting ear 622 and the connecting structure 40.

[0076] In this embodiment, the first lifting lug 612 is provided with a first through hole 613, the first lifting structure 71 is connected to the top of the first lifting lug 612, and the corresponding first working rope passes through the first through hole 613 and is connected to the first lifting structure 71; the first lifting structure 71 can be more stably connected to the top of the first lifting lug 612, and the first through hole 613 provides an escape space for the first lifting structure 71 and the first working rope to prevent the first working rope from rubbing against the first lifting lug 612 and causing damage to the first lifting lug 612. Preferably, the first lifting lug 612 is integrally formed on the side of the first leg body 611.

[0077] The second lifting lug 622 is provided with a second through hole 623, the first lifting structure 71 is connected to the top of the second lifting lug 622, and the corresponding first working rope passes through the second through hole 623 and is connected to the first lifting structure 71. The second lifting structure 72 can be more stably connected to the top of the second lifting lug 622, and the second through hole 623 provides an escape space for the first lifting structure 71 and the first working rope to prevent the first working rope from rubbing against the second lifting lug 622 and causing damage to the first lifting lug 612. Preferably, the first lifting lug 612 is integrally formed on the side of the second leg body 621.

[0078] In this embodiment, the leg structure 60 further includes a fixing beam 63; the first leg 61 further includes a third lifting eye 614, the third lifting eye 614 is located below the first lifting eye 612 and staggered with the first through hole 613; the second leg 62 further includes a fourth lifting eye 624, the fourth lifting eye 624 is located below the second lifting eye 622 and staggered with the second through hole 623; the two ends of the fixing beam 63 are respectively connected to the adjacent third lifting eye 614 and the fourth lifting eye 624. The fixing beam 63 fixes and connects the first leg 61 and the second leg 62 through the third lifting eye 614 and the fourth lifting eye 624, thereby enhancing the stability of the first leg 61 and the second leg 62. Preferably, the two ends of the fixing beam 63 are detachably connected by a fastening structure such as bolts or screws.

[0079] In this embodiment, the first leg 61 also includes a fifth lifting ear 615, which is protrudingly arranged on the side wall of the first leg body 611 facing away from the first lifting ear 612. The fifth lifting ear 615 is suitable for being connected to the ground through a safety rope 80. The safety rope 80 can balance the tension during the lifting process of the beam structure 50 to prevent the first leg 61 from being deformed during the lifting process.

[0080] The second leg 62 also includes a sixth lifting ear 625, which is protrudingly arranged on the side wall of the second leg body 621 facing away from the second lifting ear 622. The sixth lifting ear 625 is suitable for being connected to the ground through a safety rope 80. The safety rope 80 can balance the tension during the lifting process of the beam structure 50 to prevent the second leg 62 from being deformed during the lifting process.

[0081] In this embodiment, the first leg 61 also includes a seventh lifting ear 616, which is protruding from the side wall facing away from the other first leg 61; the second leg 62 also includes an eighth lifting ear 626, which is protruding from the side wall facing away from the other second leg 62; the lifting system also includes a second lifting structure 72, which is connected to the ground, and a group of second lifting structures 72 is correspondingly provided on both sides of every two sea-side door legs 11 and on both sides of every two land-side door legs 12; each of the seventh lifting ear 616 is connected to the corresponding second lifting structure 72 through a second working rope 90; each of the eighth lifting ear 626 is connected to the corresponding second lifting structure 72 through a second working rope 90.

[0082] Before the cross beam structure 50 is lifted, the tops of the two sea-side door legs 11 can be pulled outwards by the second lifting structure 72, the second working rope 90 and the seventh lifting lug 616, so that the distance between the tops of the two sea-side door legs 11 is about 80 mm, which is convenient for the lifting and lifting of the sea-side cross beam 51. Before the cross beam structure 50 is lifted, the tops of the two land-side door legs 12 can be pulled outwards by the second lifting structure 72, the second working rope 90 and the eighth lifting lug 626, so that the distance between the tops of the two land-side door legs 12 is about 80 mm, which is convenient for the lifting and lifting of the land-side cross beam 52. Specifically, one end of the second lifting structure is rotatably connected to the ground, and the other end is connected to the second working rope 90.

[0083] In this embodiment, the second lifting structure 72 is a hydraulic lifter with a simple structure and is easy to install and disassemble. One end of the second lifting structure 72 is rotatably connected to the ground, and the power output end is connected to the second working rope 90. Each set of second lifting structures 72 can pull the top of a sea-side door leg 11 or a land-side door leg 12 to tilt outward.

[0084] In this embodiment, the second lifting structure 72 is a 200t hydraulic lifter.

[0085] In this embodiment, the first leg 61 further includes two first connecting members 617, which are respectively connected to both sides of the bottom end of the first leg body 611, and the two ends of the two first connecting members 617 are respectively detachably connected to the top of the sea-side door leg 11 through first fasteners; the first leg 61 can be installed from four angles, with a simple structure and convenient installation and disassembly. Preferably, the first connecting member 617 is welded to both sides of the bottom end of the first leg body 611; the first fastener is a fastening structure such as a bolt or a screw.

[0086] The second leg 62 further includes two second connecting members 627, which are respectively connected to both sides of the bottom end of the second leg body 621, and both ends of the two second connecting members 627 are detachably connected to the top of the land-side door leg 12 through second fasteners. The structure is simple and easy to install and disassemble. Preferably, the second connecting members 627 are welded to both sides of the bottom end of the second leg body 621; the second fasteners are fastening structures such as bolts or screws.

[0087] In this embodiment, the connection structure 40 includes a hoop 41 and a connection end 42. The hoop 41 is sleeved on the outer periphery of the end of the sea-side beam 51 or the land-side beam 52. The connection end 42 is protrudingly arranged on the side of the hoop 41, located below the corresponding first lifting structure 71, and connected to the corresponding first lifting structure 71 through the first working rope. The connection end 42 is located below the first lifting structure 71, and can achieve vertical positioning during the lifting process.

[0088] In this embodiment, the hoop 41 is welded to the end of the sea side beam 51 or the land side beam 52; a third through hole is provided on the connection end 42, and the third through hole is arranged vertically corresponding to the corresponding first through hole 613 or the corresponding second through hole 623. The first working rope is connected to the leg structure 60 and the connection structure 40, which disperses and concentrates the lifting stress, protects the main structure of the original quay crane, and greatly improves the safety during the lifting process.

[0089] In this embodiment, the crossbeam structure 50 further includes two beams, and the two ends of the sea-side crossbeam 51 are respectively vertically connected to the two beams, and the two ends of the land-side crossbeam 52 are respectively vertically connected to the two beams. The two beams are respectively connected with ladder frames, tie rods, machine rooms, etc.

[0090] Specifically, the first working rope, the second working rope and the safety rope can all be steel strands.

[0091] The lifting process of the lifting system of the quay crane in this embodiment includes: connecting the connection structure with the sea-side beam 51 and the land-side beam 52 of the beam structure 50; connecting the first lifting structure 71 to the first leg 61 and the second leg 62 of the leg structure 60, and then connecting the first leg 61 and the second leg 62 to the top of the sea-side door leg 11 and the land-side door leg 12 respectively; one end of the first working rope is connected to the first lifting structure 71, and the other end passes through the first through hole 613 and the second through hole 623 to connect with the corresponding third through hole of the connection structure 40; the fifth lifting lug 615 of the first leg 61 and the sixth lifting lug 625 of the second leg 62 are connected to different positions on the ground by a safety rope; the seventh lifting lug 616 of the first leg 61 and the eighth lifting lug 617 of the second leg 62 are connected to the ground by a second working rope. 26 are respectively connected to different second lifting structures 72. Before the lifting begins, the distance between the tops of the two sea-side door legs is first opened by the second lifting structure 72 to about 80mm, and the distance between the tops of the two land-side door legs is opened to about 80mm. During the lifting process, the action is determined according to the position reflected by the sensor on the first lifting structure 71. The upper anchor point of the first lifting structure 71 is locked, the first working rope is clamped, and the cylinder of the first lifting structure moves to lift the beam structure. However, when the specified stroke is reached, the lower anchor point of the first lifting structure is locked, and the first working rope is clamped. At this time, the main cylinder of the first lifting structure shrinks slightly, the upper anchor plate is disengaged, and finally the upper anchor is completely loosened, and the main cylinder retracts to its original position, completing a lifting cycle. Whether to perform the next lifting cycle is determined according to the position reflected by the sensor. After the beam structure 50 is lifted to the set height, the connecting structure 40 is cut off, and 40mm is reserved to ensure the integrity of the beam structure 50.

[0092] like Figures 8 to 14As shown, in this embodiment, the anti-sway damping device 30 includes: a base 301, a floating guide assembly 31, and an elastic buffer assembly 32. The base 301 is installed on the crossbeam structure 50; the floating guide assembly 31 includes a floating bracket 311 and a guide wheel 312 suitable for moving up and down along the door leg structure 10. One end of the floating bracket 311 is rotatably connected to the base 301, and the other end is provided with the guide wheel 312; one end of the elastic buffer assembly 32 is limited and fixed on the base 301, and the other end is movably connected to the floating bracket 311. The elastic buffer assembly 32 is suitable for applying a force to the guide wheel 312 to make it close to and keep on the door leg structure 10. Specifically, the crossbeam structure 50 also includes two beams, and the two ends of the sea-side beam 51 are respectively vertically connected to the two beams, and the two ends of the land-side beam 52 are respectively vertically connected to the two beams. The base 301 is installed on the beam.

[0093] In this embodiment, an anti-sway damping device 30 is installed on the beam structure 50. During the process of lifting and installing the beam structure 50, when the beam structure 50 is suddenly subjected to an impact load, the elastic buffer component 32 of the anti-sway damping device 30 can apply force to the guide wheel 312 to make it cling to and remain on the quay crane leg structure 10, which can effectively reduce the sway amplitude of the beam structure 50 when it is suddenly subjected to an impact load, and further effectively reduce the sway of the beam structure 50 in the direction of the quay crane trolley, thereby ensuring the smooth lifting of the beam structure 50, improving the stability and safety of the beam structure 50 during the lifting and installation process, and also avoiding the impact force from being transmitted to the main structure of the quay crane, thereby ensuring the safety and reliability of the structure, and overcoming the defects of the beam structure 50 in the prior art that it is easy to sway and has poor stability during the lifting and installation process.

[0094] In this embodiment, the guide wheel 312 is a roller rotatably arranged on the floating bracket 311, and the floating bracket 311 can also be called a roller bracket. Optionally, a circle of grooves is arranged on the outer periphery of the guide wheel 312, and a guide rail is correspondingly arranged on the side wall of the door leg structure 10. The guide wheel 312 is limited on the guide rail by the groove and can roll up and down along the guide rail. Through the cooperation of the groove and the guide rail, the cooperation between the guide wheel 312 and the door leg structure 10 is more stable and reliable.

[0095] Optionally, a strip avoidance hole 3111 is opened in the middle part of the floating bracket 311, and a hinge shaft 313 suitable for connecting with the strip avoidance hole 3111 is fixedly arranged on the elastic buffer component 32, and the hinge shaft 313 passes through the strip avoidance hole 3111; the strip avoidance hole 3111 is suitable for avoiding its displacement in the vertical direction when the floating bracket 311 rotates, so that the floating bracket 311 can rotate normally and drive the hinge shaft 313 to move in the horizontal direction, thereby transmitting the horizontal movement of the floating bracket 311 to the elastic buffer component 32.

[0096] It should be noted that, in the present embodiment, when the anti-sway damping device 30 is in the initial state or has not rotated, the strip-shaped avoidance hole 3111 is extended in the vertical direction to ensure that when the floating bracket 311 rotates, the strip-shaped avoidance hole 3111 has a vertical component to avoid the vertical movement of the floating bracket 311.

[0097] Since the floating bracket 311 moves in both the horizontal and vertical directions when it rotates around the hinge point of the base 301, if the connection position between the floating bracket 311 and the elastic buffer component 32 is completely constrained in the vertical direction, the floating bracket 311 cannot rotate, which may seriously damage the structure of the connection between it and the elastic buffer component 32, causing the entire device to fail. Therefore, in this embodiment, the floating bracket 311 is provided with a strip-shaped avoidance hole 3111 extending in the vertical direction in the middle part of one side close to the elastic buffer component 32, and is connected to the hinge shaft 313 fixedly provided on the elastic buffer component 32. When the floating bracket 311 rotates, it can move along The path of the strip avoidance hole 3111 floats up and down relative to the hinge shaft 313, avoiding the displacement of the floating bracket 311 in the vertical direction, and can transmit the horizontal movement of the floating bracket 311 to the elastic buffer component 32, so that when the floating bracket 311 rotates due to the impact load on the beam structure 50, the elastic buffer can be extended and retracted in the horizontal direction, that is, the direction of the trolley, thereby driving the floating bracket 311 to extend and retract in this direction, so as to make the guide wheel 312 close to the quay crane leg structure 10, and at the same time reduce the wear of the guide wheel 312 caused by the impact load, thereby improving the service life and working efficiency of the anti-sway damping device 30.

[0098] Optionally, the elastic buffer assembly 32 includes a buffer support 321, and the buffer support 321 includes a first bracket 3211 and a second bracket 3212 arranged opposite to each other, the first bracket 3211 is fixed on the base 301, and the second bracket 3212 is slidably mounted on the first bracket 3211; wherein the second bracket 3212 is located on a side close to the floating bracket 311, and the second bracket 3212 is provided with a connecting portion 32121 suitable for connecting with the floating bracket 311, and the hinge shaft 313 is fixedly arranged on the connecting portion 32121. Optionally, in this embodiment, the first bracket 3211 is a first longitudinal support plate fixedly arranged on the upper surface of the base 301, and the second bracket 3212 is a second longitudinal support plate arranged opposite to the first longitudinal support plate, and the second longitudinal support plate is slidably mounted on the first longitudinal support plate.

[0099] Optionally, a supporting plate is fixedly provided on the side wall of the first longitudinal support plate close to the second longitudinal support plate, and the supporting plate is located below the second longitudinal support plate. There is a set gap between the supporting plate and the lower edge of the second longitudinal support plate, or the supporting plate and the lower edge of the second longitudinal support plate can also be in contact and cooperate. The supporting plate supports the second longitudinal support plate to prevent the second longitudinal support plate from sinking and affecting the normal use of the anti-sway damping device 30.

[0100] Optionally, a triangular reinforcement plate for increasing the structural strength of the supporting plate is further provided between the first longitudinal support plate and the supporting plate.

[0101] Optionally, the elastic buffer assembly 32 includes an elastic member 322, which is disposed between the first bracket 3211 and the second bracket 3212 and can be retracted in the horizontal direction, and is suitable for applying a force to the second bracket 3212 to move away from the first bracket 3211. In this embodiment, when the floating bracket 311 rotates, the bar-shaped avoidance hole 3111 pushes the hinge shaft 313 to move in the horizontal direction, and this movement is transmitted to the second bracket 3212 and the elastic member 322, thereby finally reducing vibration.

[0102] Optionally, the elastic member 322 is a rubber spring compressed and arranged between the first bracket 3211 and the second bracket 3212, and wrapping rings are arranged at both ends of the rubber spring, and the wrapping rings wrap the two ends of the rubber spring to protect them from wear.

[0103] Optionally, the rubber spring may be fixedly connected between the first bracket 3211 and the second bracket 3212 , or may be compressed and abutted between the first bracket 3211 and the second bracket 3212 .

[0104] Optionally, a sliding shaft 32122 is fixedly provided on the side wall of the second bracket 3212 close to the first bracket 3211; a guide hole for the sliding shaft 32122 to pass through is correspondingly provided on the first bracket 3211, and a stopper 323 for preventing the sliding shaft 32122 from being separated from the guide hole is provided on the end of the sliding shaft 32122. The sliding stopper connection between the second bracket 3212 and the first bracket 3211 is realized by the cooperation between the sliding shaft 32122 and the guide hole.

[0105] Optionally, the sliding shaft 32122 is welded and fixed on the second bracket 3212 .

[0106] Optionally, the rubber spring has a through hole in the center, and the sliding shaft 32122 passes through the through hole in the center of the rubber spring. The rubber spring is arranged horizontally and can be extended and retracted in the horizontal direction, thereby driving the second bracket 3212 to move closer to or away from the first bracket 3211 in the horizontal direction, thereby driving the guide wheel 312 to move in the horizontal direction.

[0107] Optionally, the limiting member 323 is a locking nut fastened to the end of the sliding shaft 32122. The setting of the locking nut can not only achieve the limited fixing of the sliding shaft 32122 to prevent the end of the sliding shaft 32122 from escaping from the guide hole, but also the locking nut can also adjust the relative position of the sliding shaft 32122 and the first bracket 3211.

[0108] Optionally, the sliding shaft 32122 is a stepped shaft, and includes a first shaft segment fixed to the inner wall of the first bracket 3211 and a second shaft segment with a reduced outer diameter suitable for passing through the guide hole, and the inner diameter of the guide hole is larger than the outer diameter of the second shaft segment and smaller than the outer diameter of the first shaft segment. In this way, the sliding shaft 32122 is limited by the locking nut on one side of the first bracket 3211, and limited by the shaft shoulder on the other side.

[0109] Optionally, the sliding shaft 32122 also includes a third shaft segment, the outer diameter of the third shaft segment is smaller than the second shaft segment, the second shaft segment is connected between the first shaft segment and the third shaft segment, a guide sleeve is fixedly provided on the outer side wall of the first bracket 3211 (the side wall away from the second bracket 3212), a fixed support plate for supporting and fixing the guide sleeve is fixedly provided on the base 301, the guide sleeve is connected and fixed between the fixed support plate and the first bracket 3211, a through hole is provided on the fixed support plate for the third shaft segment to pass through, the inner diameter of the through hole is larger than the outer diameter of the third shaft segment and smaller than the outer diameter of the second shaft segment, the locking nut is connected and fixed to the end of the third shaft segment, the connecting shaft on one side of the through hole is limited by the locking nut and the other side is limited by the shaft shoulder. By adopting the above design, the stability and balance of the cooperation between the sliding shaft 32122, the second bracket 3212 and the first bracket 3211 can be effectively guaranteed.

[0110] Optionally, the floating bracket 311 includes two mounting plates arranged opposite to each other, and the two mounting plates are respectively provided with the strip-shaped avoidance holes 3111; the connecting portion 32121 is two connecting plates fixedly arranged on the outer side wall of the first bracket 3211, and the two connecting plates are suitable for extending into the two mounting plates, and are respectively provided with connecting holes suitable for interference fit with the hinge shaft 313, so as to realize the connection and fixation between the hinge shaft 313 and the connecting portion 32121. The hinge shaft 313 passes through the two connecting holes and the two strip-shaped avoidance holes 3111 in sequence, so as to realize the connection between the floating bracket 311 and the second bracket 3212.

[0111] Optionally, both ends of the hinge shaft 313 can be fixed and limited by nuts or pins. The mounting plate and the connecting plate are both longitudinal plates.

[0112] Optionally, the floating bracket 311 further includes two guide wheel mounting plates arranged opposite to each other for mounting the guide wheel 312 , and the distance between the two guide wheel mounting plates is greater than the distance between two mounting plates provided with the strip-shaped avoidance holes 3111 .

[0113] Specifically, one end of the two guide wheel mounting plates close to the elastic buffer assembly 32 is bent and extended to the opposite side, and then bent and extended in the opposite direction close to the guide wheel 312 to form the mounting plate.

[0114] Preferably, the two guide wheel mounting plates include two first straight sections, two second straight sections and two inclined transition sections, wherein the two first straight sections are located near the guide wheel 312, the two second straight sections are located near the elastic buffer assembly 32, and the inclined transition section is connected between the first straight section and the second straight section. Optionally, the floating bracket 311 is hinged to the base 301, and the floating bracket 311 can rotate in the vertical direction around the hinge point connected to the base 301. Specifically, an articulated seat 3011 is fixedly provided on the base 301, and an articulated hole is provided at the lower end of the floating bracket 311, and the articulated hole and the articulated seat 3011 are connected by an articulated shaft to realize the articulation of the floating bracket 311 with the base 301.

[0115] Optionally, the hinge point between the floating bracket 311 and the base 301 is located on the inclined transition section. Optionally, the hinge hole is provided on the inclined transition section.

[0116] Optionally, the strip-shaped avoidance hole 3111 is a waist-shaped hole extending in the vertical direction.

[0117] The anti-sway damping device 30 provided in this embodiment is used in the installation process of the quay crane cross beam structure 50.

[0118] Embodiment 2

[0119] like Figures 8 to 14 As shown, this embodiment provides a quay crane, comprising: a door leg structure 10 and a beam structure 50 which is liftably arranged on the door leg structure 10, and the anti-sway damping device 30 described in the above embodiment 1 is installed on the beam structure 50.

[0120] Optionally, the quay crane further comprises a mounting support 14, the anti-sway damping device 30 is fixed on the mounting support 14, and the mounting support 14 is mounted on the cross beam structure 50. Optionally, the mounting support 14 is a clamp. The mounting support 14 is provided to facilitate the connection between the anti-sway damping device 30 and the cross beam structure 50.

[0121] Optionally, the base 301 is fixed to the mounting support 14 by screws to facilitate disassembly and installation.

[0122] The quay crane provided in this embodiment reduces the sway of the beam structure 50 in the direction of the quay crane trolley by installing the above-mentioned anti-sway damping device 30 on the beam structure 50, thereby maintaining the stability of the beam structure 50. At the same time, it can also effectively maintain the stability of the beam structure 50 under normal working conditions, reduce the impact of the impact load on the quay crane leg structure 10, and improve the reliability of the installation of the beam structure 50 and the impact resistance of the quay crane.

[0123] The following is combined with Figures 8 to 14 , the working process and principle of the anti-sway damping device 30 provided in this embodiment are introduced.

[0124] When the quay crane is installed in this embodiment, the crossbeam structure 50 is pulled up and lifted between the two leg structures 10. The mounting bracket 14 is mounted on the crossbeam structure 50, and one is mounted on each leg structure 10. The base 301 is mounted on the mounting bracket 14, and the floating bracket 311 is hinged by the hinge seat 3011 on the base 301. The floating bracket 311 can rotate around the hinge point of the base 301. The floating bracket 311 is provided with a strip avoidance hole 3111 in the part close to the middle of the crossbeam structure 50, and the floating bracket 311 and the second bracket 3212 are hinged by the hinge shaft 313. The floating bracket 311 can float relative to the hinge shaft 313 along the path of the strip avoidance hole 3111, and the rubber spring can be extended and retracted in the direction of the trolley, thereby driving the floating bracket 311 to extend and retract in this direction. The floating bracket 311 is provided with a guide wheel 312 near the leg structure 10, and the guide wheel 312 can roll up and down along the side wall of the leg structure 10. The rubber spring is installed on the sliding shaft 32122 on the second bracket 3212. The first bracket 3211 has a guide hole. When the second bracket 3212 is squeezed, the sliding shaft 32122 on the second bracket 3212 can move back and forth in the guide hole of the first bracket 3211. The rubber spring between the first bracket 3211 and the second bracket 3212 will be squeezed at this time.

[0125] During operation, when the crossbeam structure 50 of the quay crane is lifted by the wire rope, the guide wheel 312 rolls up and down along the side wall of the portal leg structure 10, providing support to the crossbeam structure 50 in the direction of the large vehicle, ensuring that the crossbeam structure 50 does not shake under normal installation. In normal state, the elastic member 322 is in a compressed state, and a force is applied to the guide wheel 312 to make it fit tightly and remain on the portal leg structure 10. The force of the elastic member 322 on the floating bracket 311 in the direction of the large vehicle is balanced with the force of the portal leg structure 10 on the guide wheel 312. When the crossbeam structure 50 is suddenly subjected to a load in the direction of the large vehicle, such as a crosswind, the crossbeam structure 50 will be impacted or squeezed to one side. The impact and squeezing will increase the pressure on the guide wheel 312 on this side, and the floating bracket 311 will rotate around the hinge point of the base 301 with the guide wheel 312. The hinge shaft 313 at the connection between the floating bracket 311 and the elastic buffer assembly 32 will move downward and squeeze the elastic member 322. When the elastic member 322 is compressed to a certain extent, its resistance will stop the floating bracket 311 from rotating. After the load in the direction of the large vehicle disappears, the floating bracket 311 will return to its original position. The presence of the elastic member 322 can slow down the rotation speed of the floating bracket 311 and reduce the amplitude, thereby maintaining the stability of the crossbeam structure 50.

[0126] When the cross beam structure 50 is subjected to a load in the direction of a large vehicle, the pressure on one side of the guide wheel 312 increases, while the pressure on the other side decreases. At this time, the outward thrust of the elastic member 322 on the other side of the floating bracket 311 will cause the floating bracket 311 to have a tendency to rotate toward the side of the door leg structure 10, so that even if the pressure on the other side decreases, the guide wheel 312 can always be in contact with the door leg structure 10, and the quay crane cross beam structure 50 will not shake between the door leg structures 10. This effectively maintains the stability of the cross beam structure 50 under normal working conditions, and at the same time reduces the shaking amplitude when suddenly subjected to a load, and reduces the impact on the door leg structure 10.

[0127] It should be noted that, in this embodiment, the door leg structure 10 includes two sea-side door legs 11 close to the sea side and two land-side door legs 12 close to the land side, and the two sea-side door legs 11 correspond to the two land-side door legs 12. The anti-sway damping device 30 is respectively provided at both ends of the crossbeam structure 50 connected between the two sea-side door legs 11 and / or the two land-side door legs 12. The trolley direction described in this embodiment is the direction of the line connecting the two land-side door legs 12.

[0128] like Figures 15 to 21 As shown, this embodiment also discloses a quay crane, including a leg structure 10 and a beam structure 50, wherein the leg structure 10 includes a sea-side leg 11 and a land-side leg 12 arranged at a set interval; the beam structure 50 includes a sea-side beam 51 and a land-side beam 52, wherein both ends of the sea-side beam 51 are suitable for being connected to the two sea-side legs 11 at a set height, respectively, and both ends of the land-side beam 52 are suitable for being connected to the two land-side legs 12 at a set height; the beam structure 50 is suitable for being lifted to the set height by the lifting system of the quay crane mentioned above.

[0129] The quay crane of this embodiment also includes a spacing adjustment device, wherein the sea-side gate leg 11 and the land-side gate leg 12 are connected by an adjustable connecting beam 13; the spacing adjustment device 20 includes a first connecting sleeve 21 fixed on the gate leg structure 10 and a second connecting sleeve 22 fixed on the adjustable connecting beam 13, and a connecting rod 23 connected between the first connecting sleeve 21 and the second connecting sleeve 22, and an adjuster 24 arranged on the connecting rod 23 and suitable for adjusting and locking the positions of the first connecting sleeve 21 and the second connecting sleeve 22 on the connecting rod 23; the adjuster 24 is suitable for adjusting the relative positions of the first connecting sleeve 21 and the second connecting sleeve 22 on the connecting rod 23, so that the gate leg structure 10 and the adjustable connecting beam 13 are closer to or farther away from each other, so as to adjust the spacing between the two gate leg structures 10.

[0130] The quay crane gantry leg structure adjustment device provided in this embodiment can efficiently and conveniently fine-tune the distance between the two gantry leg structures 10 on the sea and land sides through the set spacing adjustment device 20 when the beam structure and the two gantry leg structures 10 cannot be accurately matched, so as to meet the installation requirements. It is not only convenient and quick to operate, but also safer, and can effectively improve the installation efficiency of the quay crane gantry leg structure adjustment device and reduce time and economic costs.

[0131] In the above solution, the two gate leg structures 10 are a sea side gate leg 11 close to the sea side, and a land side gate leg 12 close to the land side. Of course, it is not limited to this. In some embodiments, the spacing adjustment device 20 can also be set between the two sea side gate legs 11 or the two land side gate legs 12.

[0132] Optionally, the connecting rod 23 is a screw rod penetrating the first connecting sleeve 21 and the second connecting sleeve 22 , and the adjuster 24 is an adjusting nut threadedly connected to the screw rod.

[0133] In the above scheme, the connecting rod 23 adopts a screw rod that passes through the first connecting sleeve 21 and the second connecting sleeve 22, and the adjuster 24 adopts an adjusting nut threadedly connected to the screw rod. By adjusting the position of the adjusting nut on the connecting rod 23, the distance between the two door leg structures 10 can be adjusted, which is more convenient to operate, simple in structure and low in cost.

[0134] Furthermore, the inner diameter of the first connecting sleeve 21 and the second connecting sleeve 22 is larger than the outer diameter of the screw, and the screw can move freely in the first connecting sleeve 21 and the second connecting sleeve 22. The first connecting sleeve 21 and the second connecting sleeve 22 can be a hollow tubular structure or a sleeve structure. Of course, in other embodiments, the first connecting sleeve 21 and the second connecting sleeve 22 can also be a connecting block structure with a hollow channel for the screw to pass through. This embodiment does not limit the specific structural shape of the first connecting sleeve 21 and the second connecting sleeve 22, as long as the connecting rod 23 can pass through to achieve the connection between the door leg structure 10 and the adjustable connecting beam 13.

[0135] Furthermore, the first connecting sleeve 21 and the second connecting sleeve 22 can be respectively fixed to the door leg structure 10 and the adjustable connecting beam 13 by welding and / or bonding and / or screw connection. Preferably, in this embodiment, the first connecting sleeve 21 and the second connecting sleeve 22 are made of steel with higher hardness, and are respectively fixed to the door leg structure 10 and the adjustable connecting beam 13 by welding. The connection by welding is more reliable and stable.

[0136] Alternatively, if Figures 15 to 17As shown, a plug-in portion 101 suitable for plugging with the adjustable connecting beam 13 is fixedly provided on one side of the door leg structure 10 close to the adjustable connecting beam 13; a slot for inserting the plug-in portion 101 is correspondingly provided at the end of the adjustable connecting beam 13, and the spacing adjustment device 20 is suitable for adjusting the spacing between the two door leg structures 10 by adjusting the insertion depth of the plug-in portion 101.

[0137] Furthermore, if Fig.16 As shown, the plug-in portion 101 is a plug plate or a plug sheet arranged longitudinally, and the slot includes a sheet-like opening groove 131 opened on the end of the adjustable connecting beam 13 and matching the shape of the plug-in portion 101, and an avoidance fault tolerance groove 132 connected to the sheet-like opening groove 131, the groove width of the avoidance fault tolerance groove 132 is slightly larger than the sheet-like opening groove 131, and has a certain depth, and the groove depths of the avoidance fault tolerance groove 132 and the sheet-like opening groove 131 constitute the adjustment range of the spacing adjustment device 20.

[0138] Of course, in other modified embodiments, a plug-in portion 101 suitable for plugging and matching with the door leg structure 10 may also be provided at the end of the adjustable connecting beam 13, and a slot may be correspondingly provided on the door leg structure 10.

[0139] Alternatively, if Fig.15 , Fig.17 , Fig.18 As shown, the spacing adjustment device 20 also includes two first fixing frames 25 fixedly arranged on the plug-in portion 101; the first fixing frames 25 are used to support and fix the first connecting sleeve 21, and the two ends of the first connecting sleeve 21 are fixedly connected between the two first fixing frames 25, and the adjusting nut includes two first adjusting nuts 241 abutting against the outside of the two first fixing frames 25. When adjusting the displacement, first loosen one of the two first adjusting nuts 241, and then rotate the other one to push the first connecting sleeve 21 closer to or away from the second connecting sleeve 22, so as to adjust the spacing between the first connecting sleeve 21 and the second connecting sleeve 22, and then adjust the spacing between the two door leg structures 10.

[0140] Optionally, the plug-in portion 101 has an inserting portion suitable for being inserted into the adjustable connecting beam 13 and an exposed portion exposed outside the adjustable connecting beam 13 , and the first connecting sleeve 21 is fixedly disposed on the exposed portion of the plug-in portion 101 .

[0141] Furthermore, the first connecting sleeves 21 include two, and the two first connecting sleeves 21 are respectively arranged on the left and right sides of the plug-in portion 101 .

[0142] Further, the first fixing frame 25 is a fixing plate welded and fixed on the left and right side walls of the sheet-shaped or plate-shaped plug-in part 101. One of the two first connecting sleeves 21 is welded and fixed between the two first fixing frames 25 located on one side of the plug-in part 101, and the other is welded and fixed between the two first fixing frames 25 located on the other side of the plug-in part 101. The fixing plate is correspondingly provided with a through hole for the connecting rod 23 to pass through.

[0143] The plug-in portion 101 provided in this embodiment can not only realize the rapid plug-in positioning of the door leg structure 10 and the adjustable connecting beam 13 to improve the installation efficiency, but also the first connecting sleeve 21 can be fixed on the plug-in portion 101, which is more convenient for its connection with the second connecting sleeve 22.

[0144] Alternatively, if Fig.16 , Figures 19 to 21 As shown, the spacing adjustment device 20 also includes two second fixing frames 26 fixedly arranged on the adjustable connecting beam 13, and the second fixing frames 26 are used to support and fix the second connecting sleeve 22; the two ends of the second connecting sleeve 22 are fixedly connected between the two second fixing frames 26, and the adjusting nut also includes two second adjusting nuts 242 resting against the outside of the two second fixing frames 26.

[0145] Optionally, the adjustable connecting beam 13 is a tubular structure. Preferably, in order to save material costs, the adjustable connecting beam 13 is a hollow tubular structure. The second fixing frame 26 is a semi-circular support plate arranged around the outer periphery of the adjustable connecting beam 13; the two ends of the second connecting sleeve 22 are connected and fixed on the two semi-circular support plates. Preferably, the second connecting sleeve 22 includes two, and the two second connecting sleeves 22 are symmetrically arranged about the vertical bisector of the adjustable connecting beam 13, that is, the two second connecting sleeves 22 are arranged on both sides of the adjustable connecting beam 13.

[0146] Furthermore, the center of the first connecting sleeve 21 and the center of the second connecting sleeve 22 are on the same straight line to ensure that the screw can be smoothly inserted into the first connecting sleeve 21 and the second connecting sleeve 22, and the semi-annular support plate is correspondingly provided with an avoidance opening for the screw to pass through. The screw passes through the two second fixing frames 26, the second connecting sleeve 22, and the two first fixing frames 25 and the first connecting sleeve 21 respectively.

[0147] Optionally, in this embodiment, a plurality of reinforcing ribs 29 are provided on the second fixing frame 26 . Preferably, the reinforcing ribs 29 are provided at intervals along the circumference of the semi-annular support plate to increase the structural strength of the second fixing frame 26 .

[0148] Furthermore, the first connecting sleeve 21 and the second connecting sleeve 22, the first fixing frame 25, the second fixing frame 26, the plug-in portion 101 and the adjustable connecting beam 13 can be fixed to the door leg structure 10 and the adjustable connecting beam 13 by welding and / or bonding and / or screw connection. Preferably, in this embodiment, the first connecting sleeve 21 and the second connecting sleeve 22, the first fixing frame 25 and the second fixing frame 26 are all made of steel with relatively high hardness, and are fixed to the door leg structure 10 and the adjustable connecting beam 13 by welding. The connection by welding is more reliable and stable and is not easy to fall off.

[0149] Preferably, in this embodiment, the first connecting sleeve 21 and the second connecting sleeve 22 are both arranged horizontally, and the center of the first connecting sleeve 21 and the center of the second connecting sleeve 22 are located on the same horizontal straight line.

[0150] Optionally, the spacing adjustment device 20 also includes a first reinforcement structure 27 and / or a second reinforcement structure 28, wherein the first reinforcement structure 27 is connected between the first connecting sleeve 21 and the plug-in portion 101, and is suitable for increasing the structural strength of the first connecting sleeve 21; the second reinforcement structure 28 is connected between the second connecting sleeve 22 and the adjustable connecting beam 13, and is suitable for increasing the structural strength of the second connecting sleeve 22.

[0151] The quay crane door leg structure adjustment device provided by the present invention can effectively increase the structural strength of the first connecting sleeve 21 and the second connecting sleeve 22, thereby improving their durability and service life, by providing a first reinforcing structure 27 provided between the first connecting sleeve 21 and the plug-in portion 101, and a second reinforcing structure 28 provided between the second connecting sleeve 22 and the adjustable connecting beam 13.

[0152] Further, the first reinforcement structure 27 is a first horizontal reinforcement plate connected between the peripheral side wall of the first connection sleeve 21 and the outer side wall of the plug-in portion 101 and the two first fixing frames 25. The second reinforcement structure 28 includes a vertical reinforcement plate connected between the two second fixing frames 26 and the peripheral side wall of the adjustable connection beam 13, and a second horizontal reinforcement plate connected between the vertical reinforcement plate and the two second fixing frames 26 and the peripheral side wall of the second connection sleeve 22.

[0153] Optionally, the first horizontal reinforcement plate, the vertical reinforcement plate, and the second horizontal reinforcement plate are all fixed by welding.

[0154] Optionally, the spacing adjustment device 20 includes: a sea side spacing adjustment device, which is arranged at the end of the adjustable connecting beam 13 close to the sea side and is suitable for connecting to the sea side door leg 11; a land side spacing adjustment device, which is arranged at the end of the adjustable connecting beam 13 close to the land side and is suitable for connecting to the land side door leg 12.

[0155] The present invention provides a quay crane gantry leg structure adjustment device, wherein the spacing adjustment device 20 includes a sea-side spacing adjustment device and a land-side spacing adjustment device arranged at both ends of an adjustable connecting beam 13. During use, an operator can adjust the spacing between the two gantry leg structures 10 from any side or from both sides according to actual needs, thereby meeting various needs during actual use and improving the flexibility, operability and convenience of spacing adjustment.

[0156] Optionally, the sea-side spacing adjustment device has two groups, which are respectively arranged on the upper and lower sides of the adjustable connecting beam; the land-side spacing adjustment device has two groups, which are respectively arranged on the upper and lower sides of the adjustable connecting beam.

[0157] Specifically, the sea-side spacing adjustment device and the land-side spacing adjustment device both include four first connecting sleeves 21, two upper and two lower, which are arranged on the upper and lower sides of the adjustable connecting beam. The first fixing frame 25 correspondingly includes four groups of first fixing frames 25, two upper and two lower, which are arranged on the upper and lower sides of the adjustable connecting beam. Each group of first fixing frames 25 includes two first fixing frames 25 arranged at a set distance.

[0158] Furthermore, the sea-side spacing adjustment device and the land-side spacing adjustment device both include four second connecting sleeves 22, two upper and two lower, which are arranged on the upper and lower sides of the adjustable connecting beam, and the second fixing frames 26 correspondingly include four groups of second fixing frames 26, two upper and two lower, which are arranged on the upper and lower sides of the adjustable connecting beam, and each group of second fixing frames 26 includes two second fixing frames 26 arranged at a set spacing.

[0159] Furthermore, the second fixing frame 26 includes an upper semi-circular support plate arranged around the upper half of the adjustable connecting beam 13, and a lower semi-circular support plate arranged around the lower half of the adjustable connecting beam 13, the upper semi-circular support plate and the lower semi-circular support plate are positioned corresponding to each other, and four second connecting sleeves 22 are welded and fixed to the upper semi-circular support plate and the lower semi-circular support plate, two up and two down. The second fixing frame 26 adopts a semi-circular structural design, and can be directly welded to the adjustable connecting beam 13, avoiding the problem that the closed ring needs to be inserted from one end of the adjustable connecting beam 13, but the adjustable connecting beam 13 has been matched with the door leg structure 10 during installation, and cannot be inserted from one end.

[0160] The specific principle and working process of the quay crane door leg structure adjustment device provided in this embodiment are as follows:

[0161] The adjustable connecting beam 13 connects the two leg structures 10 on the sea side and the land side of the gantry leg structure adjustment device of the quay crane. The adjustable connecting beam 13 is tubular. Where the adjustable connecting beam 13 is connected to the sea and land side legs of the gantry leg structure adjustment device of the quay crane, the part where the sea and land side legs are connected is provided with a plug-in portion 101 arranged in a sheet shape, which can be inserted into the adjustable connecting beam 13. Two first fixing frames 25 arranged at a set interval are welded to the plug-in portion 101 of the gantry leg structure 10, and a first connecting sleeve 21 is fixedly arranged between the two first fixing frames 25. A first horizontal reinforcing plate for increasing the structural strength of the first connecting sleeve 21 is welded between the two first fixing frames 25. Similarly, two semi-circular second fixing frames 26 arranged at a set interval are welded to the adjustable connecting beam 13, and a second connecting sleeve 22 is fixedly arranged between the two second fixing frames 26. A second horizontal reinforcing plate and a vertical reinforcing plate for reinforcing the strength of the second connecting sleeve 22 are arranged between the two second fixing frames 26 and the second connecting sleeve 22. The screw rod passes through the first connecting sleeve 21 and the second connecting sleeve 22. Adjustment nuts are respectively provided on the screw rods on both sides of the first fixing frame 25. Similarly, adjustment nuts are also respectively provided on the screw rods on both sides of the second fixing frame 26. This set of adjustment mechanisms is symmetrical up and down and left and right. It is provided above and below the adjustable connecting beam 13 and at the place where the adjustable connecting beam 13 is connected to the sea and land side door legs.

[0162] During operation, when the distance between the sea and land side door legs needs to be adjusted during installation, the adjusting nut on one side of the first fixing frame 25 and / or the second fixing frame 26 is loosened, and then the adjusting nut on the other side of the first fixing frame 25 and / or the second fixing frame 26 is rotated to adjust the position of the first fixing frame 25 and / or the second fixing frame 26 on the screw rod so that the first fixing frame 25 and the second fixing frame 26 are close to or away from each other. The first fixing frame 25 is welded to the door leg structure 10, and the second fixing frame 26 is welded to the adjustable connecting beam 13. When the distance between the first fixing frame 25 and the second fixing frame 26 changes, the door leg structure 10 and the adjustable connecting beam 13 will be slightly deformed, thereby adjusting the distance between the sea and land side door legs, so that it meets the installation requirements.

[0163] The quay crane gantry leg structure adjustment device provided in this embodiment, the sea side spacing adjustment device and the land side spacing adjustment device respectively include four sets of adjustment mechanisms symmetrically arranged about the horizontal bisector and the vertical bisector of the adjustable connecting beam 13, and the gantry leg structure 10 and the adjustable connecting beam 13 are adjusted and fixed in multiple directions, thereby effectively ensuring the reliability of the connection between the adjustable connecting beam 13 and the gantry leg structure 10, and ensuring that the two gantry leg structures 10 can stably maintain the preset adjustment position after adjustment.

[0164] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A lifting system for a quay crane, the quay crane comprising a leg structure (10) and a beam structure (50), the leg structure (10) comprising two sea-side legs (11) and two land-side legs (12) arranged at intervals; the beam structure (50) comprising a sea-side beam (51) and a land-side beam (52), the two ends of the sea-side beam (51) being suitable for being connected to the two sea-side legs (11) at a set height; the two ends of the land-side beam (52) being suitable for being connected to the two land-side legs (12) at the set height; characterized in that: The lifting system comprises: A connection structure (40), wherein both ends of the sea-side cross beam (51) and both ends of the land-side cross beam (52) are connected to a set of the connection structures (40); A first lifting structure (71) is a hydraulic lifter, and a group of the first lifting structures (71) is provided on the top of each of the sea-side door legs (11) and the top of each of the land-side door legs (12). Each group of the first lifting structures (71) is connected to a corresponding group of the connecting structures (40) via a first working rope, and is suitable for lifting the crossbeam structure (50) to the set height; An anti-sway damping device (30) is mounted on the crossbeam structure (50) and is slidably matched with the door leg structure (10); A leg structure (60), the leg structure (60) comprising a first leg (61), one end of which is detachably connected to the top of the sea-side door leg (11), and the other end of which extends upward and is connected to the corresponding first lifting structure (71); the top of each sea-side door leg (11) is matched with one of the first legs (61); a second leg (62), one end of which is detachably connected to the top of the land-side door leg (12), and the other end of which extends upward and is connected to the corresponding first lifting structure (71); the top of each land-side door leg (12) is matched with one of the second legs (62); The anti-sway damping device (30) comprises a base (301) mounted on the crossbeam structure (50); a floating guide assembly (31) comprising a floating bracket (311) and a guide wheel (312) adapted to move up and down along the door leg structure (10), wherein one end of the floating bracket (311) is rotatably connected to the base (301), and the other end is provided with the guide wheel (312); an elastic buffer assembly (32) having one end fixed in a limited position on the base (301) and the other end movably connected to the floating bracket (311), wherein the elastic buffer assembly (32) is adapted to apply a force to the guide wheel (312) to make it cling to and remain on the door leg structure (10); A strip-shaped avoidance hole (3111) is provided in the middle portion of the floating bracket (311), a hinge shaft (313) suitable for connecting with the strip-shaped avoidance hole (3111) is fixedly provided on the elastic buffer component (32), and the hinge shaft (313) passes through the strip-shaped avoidance hole (3111); The strip-shaped avoidance hole (3111) is suitable for avoiding the displacement of the floating bracket (311) in the vertical direction when the floating bracket (311) rotates, and transmitting the movement of the floating bracket (311) in the horizontal direction to the elastic buffer component (32).

2. The lifting system of the quay crane according to claim 1, characterized in that: The first leg (61) comprises a first leg body (611) and a first lifting ear (612); one end of the first leg body (611) is detachably connected to the top of the sea-side door leg (11), and the other end extends upward; the first lifting ear (612) is protrudingly arranged at the top of the side wall of the first leg body (611) facing the adjacent second leg (62); the corresponding first lifting structure (71) is connected to the top of the first lifting ear (612); and the corresponding first working rope passes through a first through hole (613) on the first lifting ear (612) and is connected to the first lifting structure (71); The second leg (62) comprises a second leg body (621) and a second lifting ear (622); one end of the second leg body (621) is detachably connected to the top of the land-side door leg (12), and the other end extends upward; the second lifting ear (622) is protrudingly arranged at the top of the side wall of the second leg body (621) facing the adjacent first leg (61); the corresponding first lifting structure (71) is connected to the top of the second lifting ear (622); and the corresponding first working rope passes through a second through hole (623) on the second lifting ear (622) and is connected to the first lifting structure (71).

3. The lifting system of the quay crane according to claim 2, characterized in that: Also included is a fixing beam (63); The first supporting leg (61) further comprises a third lifting ear (614), the third lifting ear (614) being protrudingly arranged on the first leg body (611), being located below the first lifting ear (612), and being staggered with the first through hole (613); the second supporting leg (62) further comprises a fourth lifting ear (624), the fourth lifting ear (624) being protrudingly arranged on the second leg body (621), being located below the second lifting ear (622), and being staggered with the second through hole (623); two ends of the fixing beam (63) are respectively connected to the adjacent third lifting ear (614) and the fourth lifting ear (624); And / or, the first supporting leg (61) further comprises a fifth lifting eye (615), the fifth lifting eye (615) being protrudingly arranged on a side wall of the first leg body (611) facing away from the first lifting eye (612), and the fifth lifting eye (615) being suitable for being connected to the ground via a safety rope (80); the second supporting leg (62) further comprises a sixth lifting eye (625), the sixth lifting eye (625) being protrudingly arranged on a side wall of the second leg body (621) facing away from the second lifting eye (622), and the sixth lifting eye (625) being suitable for being connected to the ground via a safety rope (80); And / or, the first supporting leg (61) further comprises a seventh lifting ear (616), the seventh lifting ear (616) being protrudingly arranged on a side wall facing away from the other first supporting leg (61); The second supporting leg (62) further comprises an eighth lifting ear (626), wherein the eighth lifting ear (626) is protrudingly arranged on a side wall facing away from the other second supporting leg (62); The lifting system further comprises a second lifting structure (72), wherein the second lifting structure (72) is connected to the ground, and a group of the second lifting structures (72) is provided on both sides of each two sea-side door legs (11) and on both sides of each two land-side door legs (12); each of the seventh lifting eyes (616) is connected to the corresponding second lifting structure (72) via a second working rope (90); and each of the eighth lifting eyes (626) is connected to the corresponding second lifting structure (72) via a second working rope (90).

4. The lifting system of the quay crane according to claim 3, characterized in that: The first lifting structure (71) is a hydraulic lifter; and / or the second lifting structure (72) is a hydraulic lifter.

5. A quay crane, characterized in that: include: A door leg structure (10) comprising a sea-side door leg (11) and a land-side door leg (12) arranged at a set interval; A beam structure (50) comprises a sea-side beam (51) and a land-side beam (52), wherein two ends of the sea-side beam (51) are suitable for being connected to two sea-side gate legs (11) at a set height; two ends of the land-side beam (52) are suitable for being connected to two land-side gate legs (12) at the set height; and the beam structure (50) is suitable for being lifted to the set height by a lifting system of a quay crane according to any one of claims 1 to 4.

6. The quay crane according to claim 5, characterized in that: It also includes a spacing adjustment device (20), wherein the sea-side door leg (11) and the land-side door leg (12) are connected via an adjustable connecting beam (13); the spacing adjustment device (20) includes a first connecting sleeve (21) fixedly arranged on the door leg structure (10), a second connecting sleeve (22) fixedly arranged on the adjustable connecting beam (13), a connecting rod (23) connected between the first connecting sleeve (21) and the second connecting sleeve (22), and an adjuster (24) arranged on the connecting rod (23) and suitable for adjusting and locking the positions of the first connecting sleeve (21) and the second connecting sleeve (22) on the connecting rod (23); The regulator (24) is suitable for adjusting the relative positions of the first connecting sleeve (21) and the second connecting sleeve (22) on the connecting rod (23) so that the door leg structure (10) and the adjustable connecting beam (13) are moved closer to or farther away from each other, thereby adjusting the distance between the two door leg structures (10).

7. The quay crane according to claim 6, characterized in that: The connecting rod (23) is a screw rod that passes through the first connecting sleeve (21) and the second connecting sleeve (22), and the adjuster (24) is an adjusting nut that is threadedly connected to the screw rod.

Images