Shore bridge

Abstract

This application provides a quay crane comprising a portal frame, a rear beam, a front beam, a sea-side trapezoidal frame, a first tensioning section, a support frame, and a second tensioning section. The sea-side trapezoidal frame is located on the side of the rear beam near the front beam, and its lower end is hinged to the rear beam. The first end of the first tensioning section is hinged to the sea-side trapezoidal frame, and the second end of the first tensioning section is hinged to the front beam. When the sea-side trapezoidal frame is in an upright position, the first tensioning section pulls the front beam. The support frame is vertically positioned on the side of the rear beam near the front beam. The first end of the second tensioning section is connected to the support frame, and the second end of the second tensioning section is connected to the front beam, thus pulling the front beam. The second tensioning section of this quay crane can independently provide tension to the front beam, eliminating the need for support fixtures between the bottom of the front beam and the portal frame. This simplifies the transportation process of the quay crane, eliminates the need for support fixtures, and reduces costs.

Description

Technical Field

[0001] This application relates to the field of port machinery, and more particularly to a quay crane. Background Technology

[0002] A quay crane, also known as a shore-side container crane, is a specialized piece of equipment used in container terminals for loading and unloading container ships.

[0003] See Figure 1 A typical quay crane may include a portal frame 10, a front beam 20, a rear beam 30, a trapezoidal frame 40, and a tensioning section 50. The trapezoidal frame 40 is erected on the portal frame 10. One end of the tensioning section 50 is hinged to the trapezoidal frame 40, and the other end is hinged to the front beam 20 to provide upward tension for the suspended front beam 20.

[0004] When transporting quay cranes by transport ships, it is often necessary to pass under high-altitude obstacles such as cross-sea bridges or cross-river cables. After the transport ship arrives at the port, in order not to affect the berthing of other ships, the front beam 20 needs to be raised.

[0005] In the prior art, in order to solve the problem of avoiding high-altitude obstacles, the trapezoidal frame 40 is tilted towards the sea to reduce the navigation height. However, since the trapezoidal frame 40 is used to connect the tensioning part 50, if the trapezoidal frame 40 is tilted towards the sea, the tensioning part 50 can no longer provide upward tension to the front beam 20. Therefore, a support fixture 60 needs to be set between the bottom of the front beam 20 and the door frame 10 to support the front beam 20.

[0006] However, once the transport ship arrives at the port, a floating crane is needed to dismantle the support fixture 60 to free up the upward rotation of the front beam 20. Therefore, the existing technology suffers from a series of problems, including cumbersome transportation procedures, difficulty in dismantling the support fixture 60, and high costs, requiring further improvement. Summary of the Invention

[0007] This application provides a quay crane in which, when the sea-side trapezoidal frame is in a tilted state with the front beam tilted, there is no need to install additional support fixtures between the bottom of the front beam and the portal frame to support the front beam. When the transport ship carrying the quay crane arrives at the port terminal and the front beam needs to be raised, there is no need to disassemble the support fixtures. This not only simplifies the process of transporting the quay crane, but also eliminates the need for giant support fixtures and reduces costs.

[0008] To achieve the above objectives, this application adopts the following technical solution:

[0009] This application provides a quay crane, which includes: a portal frame; a rear beam, the rear beam being fixed to the portal frame;

[0010] The system comprises: a front beam, which is located on one side of the door frame and hinged to the rear beam; a sea-side trapezoidal frame, located on the side of the rear beam near the front beam, with its lower end hinged to the door frame, and capable of both an upright state and a tilted state towards the front beam; a first tensioning section, with its first end hinged to the sea-side trapezoidal frame and its second end hinged to the front beam, which pulls the front beam when the sea-side trapezoidal frame is upright; a support frame, which is vertically located on the side of the rear beam near the front beam; and a second tensioning section, with its first end connected to the support frame and its second end connected to the front beam, which pulls the front beam.

[0011] As an alternative implementation, the rear beam includes two parallel rear beam members and a front crossbeam connected between the two rear beam members; the bottom end of the seaside trapezoidal frame is hinged to the front crossbeam; and a support frame is disposed inside the seaside trapezoidal frame, with the bottom end of the support frame fixed to the front crossbeam.

[0012] As an optional implementation, there are two support frames, which are spaced apart; there are two second tension parts, which correspond one-to-one with the two support frames, and the first ends of the two second tension parts are respectively connected to the two support frames.

[0013] As an optional implementation, the first tensioning part includes: a plurality of first tie rods and at least one first adapter, with two adjacent first tie rods connected by a first adapter, and the first tie rod at the head end hinged to the seaside trapezoidal frame, and the first tie rod at the tail end hinged to the front beam; when the seaside trapezoidal frame is in an upright state, the plurality of first tie rods are in a straight line; when the seaside trapezoidal frame rotates from the upright state to the tilted state, at least a portion of the first tie rods rotates relative to the first adapter to fold the first tensioning part; when the front beam is tilted upward, at least a portion of the first tie rods rotates relative to the first adapter to fold the first tensioning part.

[0014] As an optional implementation, the second tension section includes: a plurality of second tie rods and at least one second adapter, with adjacent second tie rods connected by a second adapter, and the first end of the second tie rod hinged to the support frame, and the last end of the second tie rod hinged to the front beam; when the sea-side trapezoidal frame is in an upright or tilted state, the plurality of second tie rods are in the same straight line; when the front beam is tilted upward, at least some of the second tie rods rotate relative to the second adapter to fold the second tension section.

[0015] As an optional implementation, the quay crane also includes: a land-side trapezoidal frame, which is disposed on the rear beam and located on the side of the sea-side trapezoidal frame opposite to the front beam; and a connecting rod, the first end of which is connected to the land-side trapezoidal frame and the second end of which is connected to the support frame.

[0016] As an optional implementation, the quay crane also includes a rear tie rod located on the side of the land-side trapezoidal frame opposite to the sea-side trapezoidal frame. The first end of the rear tie rod is hinged to the rear beam, and the second end of the rear tie rod is hinged to the land-side trapezoidal frame to pull the land-side trapezoidal frame.

[0017] As an optional implementation, the quay crane further includes: a first pulley block, which is disposed on the sea-side trapezoidal frame; a second pulley block, which is disposed on the land-side trapezoidal frame; and a tilting and winding system, which includes a drive unit and a steel wire rope, the steel wire rope being wound around the second pulley block and the first pulley block, and the steel wire rope being connected to the drive unit, the drive unit being configured to drive the sea-side trapezoidal frame to switch between an upright state and a tilted state by winding and unwinding the steel wire rope.

[0018] As an optional implementation, the quay crane also includes a rear strut, which is located on the side of the sea-side trapezoidal frame away from the front beam, with a first end detachably connected to the rear beam and a second end connected to the sea-side trapezoidal frame to pull the sea-side trapezoidal frame.

[0019] As an optional implementation, the quay crane also includes: a slide rail, which is disposed on the rear beam; when the sea-side trapezoidal frame rotates from an upright state to a tilted state, the first end of the rear support rod is slidably disposed on the slide rail.

[0020] In this application's quay crane, the rear main beam is fixed to the portal frame, and the front main beam is located on one side of the portal frame and hinged to the rear main beam. A sea-side trapezoidal frame is located on the side of the rear main beam closest to the front main beam, with its lower end hinged to the rear main beam, and has both an upright state and a tilted state towards the front main beam. The first end of the first tensioning section is hinged to the sea-side trapezoidal frame, and the second end of the first tensioning section is hinged to the front main beam. When the sea-side trapezoidal frame is in the upright state, the first tensioning section pulls the front main beam. A support frame is vertically located on the side of the rear main beam closest to the front main beam. The first end of the second tensioning section is connected to the support frame, and the second end of the second tensioning section is connected to the front main beam. When the sea-side trapezoidal frame is in the upright or tilted state, the second tensioning section pulls the front main beam. When it is necessary to avoid high-altitude obstacles, the sea-side trapezoidal frame is in a tilted state towards the front beam. At this time, the sea-side trapezoidal frame also loses its ability to provide tension to the front beam. In this state, the second tensioning part can provide tension to the front beam independently. There is no need to set up additional support fixtures between the bottom of the front beam and the frame to support the front beam. When the transport ship carrying the quay crane arrives at the port terminal and needs to raise the front beam, there is no need to disassemble the support fixtures. This not only simplifies the process of transporting the quay crane, but also saves the huge support fixtures and reduces costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a quay crane based on existing technology.

[0023] Figure 2 A schematic diagram of a quay crane in its normal state, provided as an embodiment of this application;

[0024] Figure 3 A schematic diagram of a quay crane in a tilted state, provided as an embodiment of this application;

[0025] Figure 4 A schematic diagram of a quay crane with the front beam in an upturned state, provided as an embodiment of this application;

[0026] Figure 5 for Figure 2 The left view;

[0027] Figure 6 for Figure 2 The right view.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Door frame; 110. Rear beam; 112. Rear crossbeam; 114. Front crossbeam; 116. Rear beam rod; 120. Front beam; 200. Seaside trapezoidal frame; 210. Crossbar; 220. Waist rod; 300. First tension section; 310. First tie rod; 320. First adapter; 400. Support frame; 500. Second tension section; 510. Second tie rod; 520. Second adapter; 600. Landside trapezoidal frame; 610. Connecting rod; 620. Slide rail; 700. Rear tie rod; 810. First pulley block; 820. Second pulley block; 830. Wire rope; 900. Rear support rod. Detailed Implementation

[0030] See Figure 1 In the process of transporting quay cranes by transport ships, in order to avoid the problem of high-altitude obstacles, the trapezoidal frame 40 is tilted towards the sea to reduce the navigation height. However, since the trapezoidal frame 40 is used to connect the tensioning part 50, if the trapezoidal frame 40 is tilted towards the sea, the tensioning part 50 can no longer provide upward tension to the front beam 20. Therefore, a support fixture 60 needs to be set between the bottom of the front beam 20 and the door frame 10 to support the front beam 20.

[0031] However, when the transport ship arrives at the port and the front beam 20 needs to be raised, the supporting fixture 60 needs to be disassembled to release the freedom of the front beam 20 to rotate upwards. Therefore, the existing technology has a series of problems such as cumbersome transportation procedures, difficulty in disassembling the supporting fixture 60, and high cost, which need to be further improved.

[0032] To overcome the deficiencies in the prior art, this application provides a quay crane with a rear main beam fixed to a portal frame, a front main beam located on one side of the portal frame and hinged to the rear main beam, and a sea-side trapezoidal frame located on the side of the rear main beam near the front main beam, with its lower end hinged to the rear main beam, and capable of both an upright state and a tilted state towards the front main beam. A first end of a first tensioning section is hinged to the sea-side trapezoidal frame, and a second end of the first tensioning section is hinged to the front main beam. When the sea-side trapezoidal frame is in the upright state, the first tensioning section pulls the front main beam. A support frame is vertically located on the side of the rear main beam near the front main beam. A first end of a second tensioning section is connected to the support frame, and a second end of the second tensioning section is connected to the front main beam. When the sea-side trapezoidal frame is in the upright or tilted state, the second tensioning section pulls the front main beam. When it is necessary to avoid high-altitude obstacles, the sea-side trapezoidal frame is in a tilted state towards the front beam. At this time, the sea-side trapezoidal frame also loses its ability to provide tension to the front beam. In this state, the second tensioning part can provide tension to the front beam independently. There is no need to set up additional support fixtures between the bottom of the front beam and the frame to support the front beam. When the transport ship carrying the quay crane arrives at the port terminal and needs to raise the front beam, there is no need to disassemble the support fixtures. This not only simplifies the process of transporting the quay crane, but also saves the huge support fixtures and reduces costs.

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will be combined with the embodiments of this application. Figures 2 to 6 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] This application provides a quay crane, which generally includes a portal frame 100, a rear beam 110, and a front beam 120, with the rear beam 110 fixed to the portal frame 100. The front beam 120 is disposed on one side of the portal frame 100 and hinged to the rear beam 110.

[0035] The gantry frame 100 supports the entire quay crane. The rear main beam 110 is horizontally fixed to the gantry frame 100. The front main beam 120 is hinged to the rear main beam 110. The front main beam 120 can rotate to a horizontal position and is horizontally connected to the rear main beam 110. The two together form the main beam that supports the movement of the container hoisting trolley.

[0036] In some embodiments, the quay crane may further include a sea-side trapezoidal frame 200 and a first tensioning section 300. The sea-side trapezoidal frame 200 is located on the side of the rear beam 110 near the front beam 120, and its lower end is hinged to the portal frame 100, having both an upright state and a tilted state tilted towards the front beam 120. The first end of the first tensioning section 300 is hinged to the sea-side trapezoidal frame 200, and the second end of the first tensioning section 300 is hinged to the front beam 120. When the sea-side trapezoidal frame 200 is in the upright state, the first tensioning section 300 is used to pull the front beam 120.

[0037] In this embodiment, the door frame 100 has a seaside crossbeam, and both bottom ends of the seaside trapezoidal frame 200 are hinged to the seaside crossbeam. The seaside trapezoidal frame 200 can rotate between an upright state and a tilted state where the forward beam 120 is tilted under the drive of an external force.

[0038] When the seaside trapezoidal frame 200 is in an upright state, since the first end of the first tension part 300 is connected to the seaside trapezoidal frame 200 and the second end of the first tension part 300 is connected to the front beam 120, the seaside trapezoidal frame 200, the front beam 120 and the first tension part 300 form a stable force relationship. The first tension part 300 can pull the front beam 120 upward, so that the front beam 120 is in a horizontal state.

[0039] When transporting quay cranes by transport ships, situations often arise where it is necessary to pass under high-altitude obstacles such as cross-sea bridges or cross-river cables. In this embodiment, the sea-side trapezoidal frame 200 can be tilted towards the sea to reduce the navigation height, allowing the transport ship to pass smoothly under high-altitude obstacles.

[0040] In some embodiments, the quay crane may further include a support frame 400 and a second tensioning portion 500. The support frame 400 is vertically disposed on the side of the rear girder 110 near the front girder 120. A first end of the second tensioning portion 500 is connected to the support frame 400, and a second end of the second tensioning portion 500 is connected to the front girder 120, thereby pulling the front girder 120.

[0041] In this embodiment, the support frame 400 and the second tensioning part 500 also form a tensioning system for the front beam 120. When the sea-side trapezoidal frame 200 is in an upright state, the first tensioning part 300 and the second tensioning part 500 together provide the front beam 120 with a horizontal tension.

[0042] When it is necessary to avoid high-altitude obstacles, when the sea-side trapezoidal frame 200 is in a tilted state that is tilting towards the front beam 120, the sea-side trapezoidal frame 200 also loses the ability to provide tension to the front beam 120. In this state, the second tensioning part 500 can provide tension to the front beam 120 independently, so that it is in a horizontal state.

[0043] In other words, the quay crane in this embodiment, by adding an independent tensioning system formed by the support frame 400 and the second tensioning part 500, can provide tension to the front beam 120 when the first tensioning part 300 is in a tilted state. There is no need to set additional support fixtures for supporting the front beam 120 between the bottom of the front beam 120 and the door frame 100. When the transport ship carrying the quay crane arrives at the port terminal and needs to raise the front beam 120, there is no need to disassemble the support fixtures. This not only simplifies the process of transporting the quay crane, but also saves the huge support fixtures and reduces costs.

[0044] In some embodiments, the rear beam 110 includes two parallel rear beam members 116 and a front crossbeam 114 connected between the two rear beam members 116. The bottom end of the seaside trapezoidal frame 200 is hinged to the front crossbeam 114.

[0045] Specifically, the seaside trapezoidal frame 200 may include a crossbar 210 and two waist bars 220. The bottom ends of the two waist bars 220 are hinged to the two rear beam bars 116. The crossbar 210 is connected between the top ends of the two waist bars 220. The first end of the first tension part 300 is hinged to the crossbar 220.

[0046] Furthermore, there are two first tensioning parts 300, with the first end of each first tensioning part 300 hinged to the crossbar 210, and the second end of each first tensioning part 300 connected to the front beam 120. The two first tensioning parts 300 simultaneously pull the front beam 120, improving the balance of forces on the left and right sides.

[0047] In some embodiments, the support frame 400 is disposed inside the seaside trapezoidal frame 200, and the bottom end of the support frame 400 is fixed to the front crossbeam 114.

[0048] Specifically, the support frame 400 can also be designed as a triangle, which increases the stability of the support frame 400. The two bottom ends of the support frame 400 can be fixed to the front crossbeam 114 respectively, and the first end of the second tension part 500 is connected to the upper end of the support frame 400.

[0049] In this embodiment, since the support frame 400 is located inside the seaside trapezoidal frame 200, and the height and width of the support frame 400 are smaller than the height and width of the seaside trapezoidal frame 200, the support frame 400 will not interfere with the seaside trapezoidal frame 200 when the seaside trapezoidal frame 200 rotates in the upright and tilted states.

[0050] In some embodiments, there are two support frames 400, which are spaced apart. There are two second tension portions 500, and the first ends of the two second tension portions 500 are respectively connected to the two support frames 400.

[0051] In this embodiment, the two first tensioning parts 300 simultaneously pull the front beam 120, improving the balance of forces on the front beam 120.

[0052] In addition, the two support frames 400 are spaced apart, and there is no crossbeam between them. That is, the gap between them allows other components that rotate with the sea-side trapezoidal frame 200 to pass through without interfering with the sea-side trapezoidal frame 200.

[0053] In some exemplary embodiments, the quay bridge may further include a rear strut 900 located on the side of the sea-side trapezoidal frame 200 away from the front beam 120, with a first end of the rear strut 900 connected to the rear beam 110 and a second end of the rear strut 900 connected to the sea-side trapezoidal frame 200 to pull the sea-side trapezoidal frame 200.

[0054] When the sea-side trapezoidal frame 200 rotates from an upright position to a tilted position, the first end of the rear support rod 900 is removed from the rear beam 110 to release the rotational freedom of the sea-side trapezoidal frame 200. When the sea-side trapezoidal frame 200 rotates from an upright position to a tilted position, the rear support rod 900 also rotates towards the sea. Since the two support frames 400 are spaced apart, the gap between them allows the rear support rod 900 to pass through without affecting the rotation of the sea-side trapezoidal frame 200.

[0055] In some embodiments, the first tensioning part 300 includes a plurality of first tie rods 310 and at least one first adapter 320, with two adjacent first tie rods 310 connected in sequence through a first adapter 320, and the first tie rod 310 at the head end is hinged to the sea-side trapezoidal frame 200, and the first tie rod 310 at the tail end is hinged to the front beam 120.

[0056] When the seaside trapezoidal frame 200 is in the upright position, the multiple first tie rods 310 are aligned in a straight line. When the seaside trapezoidal frame 200 rotates from the upright position to the tilted position, at least a portion of the first tie rods 310 rotates relative to the first adapter 320, causing the first tension section 300 to fold. When the main beam 120 is tilted upwards, at least a portion of the first tie rods 310 rotates relative to the first adapter 320, causing the first tension section 300 to fold.

[0057] In this embodiment, when the seaside trapezoidal frame 200 is in an upright state, the multiple first tie rods 310 are in the same straight line, that is, in a taut state. In this way, the seaside trapezoidal frame 200, the front beam 120 and the first tension part 300 form a stable triangular support, and the first tension part 300 provides tension to the front beam 120.

[0058] When the seaside trapezoidal frame 200 tilts towards the front beam 120, at least part of the first tie rod 310 rotates relative to the first adapter 320, causing the first tension part 300 to fold. This releases the stable triangular support formed by the seaside trapezoidal frame 200, the front beam 120, and the first tension part 300, thus releasing the degree of freedom for the seaside trapezoidal frame 200 to tilt towards the front beam 120.

[0059] When the main beam 120 tilts upward, at least part of the first tie rod 310 rotates relative to the first adapter 320, releasing the stable triangular support formed by the sea-side trapezoidal frame 200, the front main beam 120 and the first tension part 300, thus releasing the degree of freedom for the front main beam 120 to tilt upward.

[0060] In some specific embodiments, there are three first pull rods 310 and two first adapters 320. A first adapter 320 is connected between two adjacent first pull rods 310.

[0061] When the seaside trapezoidal frame 200 rotates from the upright state to the tilted state, the first tie rod 310 near the seaside trapezoidal frame 200 rotates relative to the first adapter 320, so that the first tension part 300 folds.

[0062] When the front beam 120 is tilted upward, the first tie rod 310 near the front beam 120 rotates relative to the first adapter 320 to fold the first tension part 300.

[0063] In some embodiments, the second tension section 500 may include a plurality of second tie rods 510 and at least one second adapter 520, with adjacent second tie rods 510 connected by a second adapter 520, and the first end of the second tie rod 510 hinged to the support frame 400, and the last end of the second tie rod 510 hinged to the front beam 120. When the seaside trapezoidal frame 200 is in an upright or tilted state, the plurality of second tie rods 510 are in a straight line. When the front beam 120 is tilted upward, at least a portion of the second tie rods 510 rotates relative to the second adapter 520 to fold the second tension section 500.

[0064] In this embodiment, when the seaside trapezoidal frame 200 is in an upright state, the multiple second tie rods 510 are in the same straight line, that is, in a taut state. In this way, the support frame 400, the front beam 120 and the second tension part 500 form a stable triangular support. The second tension part 500 and the first tension part 300 share the same tension to provide tension to the front beam 120.

[0065] When the trapezoidal frame 200 on the sea side is tilted, the multiple second tie rods 510 are still in the same straight line, so that the support frame 400, the front beam 120 and the second tension part 500 form a stable triangular support, and the second tension part 500 provides tension to the front beam 120 alone.

[0066] When the main beam 120 is tilted upward, at least part of the second tie rod 510 rotates relative to the second adapter 520, causing the second tension part 500 to fold, releasing the stable triangular support formed by the support frame 400, the main beam 120 and the second tension part 500, and releasing the degree of freedom for the main beam 120 to tilt upward.

[0067] In some specific embodiments, there are two second pull rods 510, and a second adapter 520 is provided between the two second pull rods 510.

[0068] In some embodiments, the quay crane may further include a landside trapezoidal frame 600 and a connecting rod 610. The landside trapezoidal frame 600 is disposed on the rear beam 110 and located on the side of the seaside trapezoidal frame 200 opposite to the front beam 120. The first end of the connecting rod 610 is connected to the landside trapezoidal frame 600, and the second end of the connecting rod 610 is connected to the support frame 400.

[0069] In this embodiment, the rear beam 110 may further include a rear crossbeam 112 connected between two rear beam rods 116, and the two bottom ends of the landside trapezoidal frame 600 are respectively fixed to the rear crossbeam 112.

[0070] In this embodiment, the landside trapezoidal frame 600 can be fixed to the rear beam 110. The connecting rod 610 fixed to the landside trapezoidal frame 600 can be used to pull the support frame 400 backward to keep it stable.

[0071] Furthermore, the quay bridge may also include a rear tie rod 700, which is located on the side of the land-side trapezoidal frame 600 away from the sea-side trapezoidal frame 200. The first end of the rear tie rod 700 is hinged to the rear beam 110, and the second end of the rear tie rod 700 is hinged to the land-side trapezoidal frame 600 to pull the land-side trapezoidal frame 600.

[0072] In this embodiment, the first end of the rear tie rod 700 is hinged to the rear beam 110, and the second end of the rear tie rod 700 is hinged to the landside trapezoidal frame 600. In this way, the rear tie rod 700, the landside trapezoidal frame 600 and the rear beam 110 form a stable force triangle, which keeps the landside trapezoidal frame 600 stable.

[0073] In some embodiments, the quay crane may further include a first pulley block 810, a second pulley block 820, and a tilting and winding system. The first pulley block 810 is disposed on the sea-side trapezoidal frame 200. The second pulley block 820 is disposed on the land-side trapezoidal frame 600. The tilting and winding system includes a drive unit and a wire rope 830, which is wound around the first pulley block 810 and the second pulley block 820. The wire rope 830 is connected to the drive unit, which is configured to drive the sea-side trapezoidal frame 200 to switch between an upright state and a tilted state by winding and unwinding the wire rope 830.

[0074] In this embodiment, the first pulley block 810 is disposed on the seaside trapezoidal frame 200, and the second pulley block 820 is disposed on the landside trapezoidal frame 600. The first end of the steel wire rope 830 is fixed to the drive unit, and then sequentially winds around the second pulley block 820 on the landside trapezoidal frame 600 and the first pulley block 810 on the seaside trapezoidal frame 200, finally folding back and connecting to the landside trapezoidal frame 600. When the drive unit releases the steel wire rope 830, the tension of the steel wire rope 830 on the seaside trapezoidal frame 200 decreases, allowing the seaside trapezoidal frame 200 to rotate from an upright state to a tilted state. When the drive unit tightens the steel wire rope 830, the tension of the steel wire rope 830 on the seaside trapezoidal frame 200 increases, allowing the seaside trapezoidal frame 200 to rotate from a tilted state to an upright state.

[0075] In some specific embodiments, the drive unit may be a winch, which may be fixed to the ground or the door frame 100. The first end of the wire rope 830 is fixed to the drum of the winch, and the drum of the winch rotates forward and backward to wind up and unwind the wire rope 830, thereby controlling the tension of the wire rope 830.

[0076] In some embodiments, the quay crane may further include a rear strut 900 located on the side of the sea-side trapezoidal frame 200 away from the front beam 120, with a first end of the rear strut 900 detachably connected to the rear beam 110 and a second end of the rear strut 900 connected to the sea-side trapezoidal frame 200 to pull the sea-side trapezoidal frame 200.

[0077] In some specific embodiments, the first end of the rear strut 900 can be connected to the rear beam 110 by a pin, which facilitates the disassembly of the rear strut 900.

[0078] In this embodiment, the first end of the rear support rod 900 is detachably connected to the rear beam 110, and the second end of the rear support rod 900 is connected to the seaside trapezoidal frame 200. In this way, the rear support rod 900, the rear beam 110 and the seaside trapezoidal frame 200 form a stable force triangle, which keeps the seaside trapezoidal frame 200 stable.

[0079] When the seaside trapezoidal frame 200 rotates from the upright state to the tilted state, the first end of the rear support rod 900 can be removed from the rear beam 110 to release the rotational freedom of the seaside trapezoidal frame 200.

[0080] During the rotation of the seaside trapezoidal frame 200, the rear support rod 900 also rotates. Since the two support frames 400 are spaced apart, the gap between them allows the rear support rod 900 to pass through without affecting the rotation of the seaside trapezoidal frame 200.

[0081] Furthermore, the quay crane may also include a slide rail 620, which is mounted on the rear beam 110. When the sea-side trapezoidal frame 200 rotates from an upright state to a tilted state, the first end of the rear support rod 900 is slidably mounted on the slide rail 620.

[0082] As can be seen from the above, the rear strut 900 restricts the rotation of the sea-side trapezoidal frame 200 after installation. In order to release the rotational freedom of the sea-side trapezoidal frame 200, the first end of the rear strut 900 needs to be removed from the rear beam 110. However, if the removed rear strut 900 is not restricted, it poses a safety hazard.

[0083] In this embodiment, when the seaside trapezoidal frame 200 rotates from an upright state to a tilted state, the first end of the removed rear support rod 900 is placed in the slide rail 620, so that it slides in the slide rail 620 as the seaside trapezoidal frame 200 rotates, ensuring the safety of the rear support rod 900.

[0084] In some embodiments, the rear beam 110 may further include a rear crossbeam 112, a front crossbeam 114, and two rear beam members 116, the two rear beam members 116 extending in parallel, the rear crossbeam 112 connecting the two rear beam members 116, and the front crossbeam 114 connecting the two rear beam members 116. A landside trapezoidal frame 600 is connected to the rear crossbeam 112. A seaside trapezoidal frame 200 is hinged to the front crossbeam 114. A support frame 400 is connected to the front crossbeam 114.

[0085] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0086] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0087] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0088] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A quay crane, comprising: Door frame (100); The rear beam (110) is fixed to the door frame (100); A front beam (120) is provided on one side of the door frame (100) and is hinged to the rear beam (110); The seaside trapezoidal frame (200) is located on the side of the rear beam (110) close to the front beam (120), and its lower end is hinged to the door frame (100). It has an upright state and a tilted state that leans towards the front beam (120). The first tensioning part (300) has a first end hinged to the seaside trapezoidal frame (200) and a second end hinged to the front beam (120). When the seaside trapezoidal frame (200) is in the upright state, the first tensioning part (300) is used to pull the front beam (120). A support frame (400) is vertically disposed on the side of the rear beam (110) near the front beam (120); The second tensioning part (500) has a first end connected to the support frame (400) and a second end connected to the front beam (120), and uses the second tensioning part (500) to pull the front beam (120). The rear beam (110) includes two parallel rear beam members (116) and a front crossbeam (114) connected between the two rear beam members (116); The bottom end of the seaside trapezoidal frame (200) is hinged to the front crossbeam (114); and, The support frame (400) is disposed inside the seaside trapezoidal frame (200), and the bottom end of the support frame (400) is fixed to the front crossbeam (114).

2. The quay crane according to claim 1, wherein, There are two support frames (400), and the two support frames (400) are arranged at intervals; There are two second tension parts (500), and each of the two second tension parts (500) corresponds to one of the two support frames (400), and the first end of each of the two second tension parts (500) is connected to the two support frames (400).

3. The quay crane according to claim 1, wherein, The first tension section (300) includes: a plurality of first tie rods (310) and at least one first adapter (320), two adjacent first tie rods (310) are connected by a first adapter (320), and the first tie rod (310) at the head end is hinged to the sea-side trapezoidal frame (200), and the first tie rod (310) at the tail end is hinged to the front beam (120); When the seaside trapezoidal frame (200) is in the upright state, the plurality of first tie rods (310) are in the same straight line; When the seaside trapezoidal frame (200) rotates from the upright state to the tilted state, at least a portion of the first pull rod (310) rotates relative to the first adapter (320) to fold the first tension part (300); When the front beam (120) is tilted upward, at least part of the first tie rod (310) rotates relative to the first adapter (320) to fold the first tension section (300).

4. The quay crane according to claim 1, wherein, The second tension section (500) includes: a plurality of second tie rods (510) and at least one second adapter (520), two adjacent second tie rods (510) are connected by a second adapter (520), and the first end of the second tie rod (510) is hinged to the support frame (400), and the second end of the second tie rod (510) is hinged to the front beam (120); When the seaside trapezoidal frame (200) is in the upright state or the tilted state, the plurality of second tie rods (510) are in the same straight line; When the front beam (120) is tilted upward, at least part of the second tie rod (510) rotates relative to the second adapter (520) to fold the second tension section (500).

5. The quay crane according to any one of claims 1 to 4 further comprises: A land-side trapezoidal frame (600) is disposed on the rear beam (110) and located on the side of the sea-side trapezoidal frame (200) away from the front beam (120); A connecting rod (610), the first end of which is connected to the landside trapezoidal frame (600), and the second end of which is connected to the support frame (400).

6. The quay crane according to claim 5 further includes: A rear tie rod (700) is located on the side of the landside trapezoidal frame (600) opposite to the seaside trapezoidal frame (200). The first end of the rear tie rod (700) is hinged to the rear beam (110), and the second end of the rear tie rod (700) is hinged to the landside trapezoidal frame (600) to pull the landside trapezoidal frame (600).

7. The quay crane according to claim 5 further includes: The first pulley block (810) is disposed on the seaside trapezoidal frame (200); The second pulley block (820) is disposed on the landside trapezoidal frame (600); A tilting and winding system, comprising a drive unit and a wire rope (830), the wire rope (830) being wound around a second pulley block (820) and a first pulley block (810), and the wire rope (830) being connected to the drive unit, the drive unit being configured to drive the seaside trapezoidal frame (200) to switch between the upright state and the tilted state by winding and unwinding the wire rope (830).

8. The quay crane according to claim 5 further includes: A rear support rod (900) is located on the side of the sea-side trapezoidal frame (200) away from the front beam (120), and the first end of the rear support rod (900) is detachably connected to the rear beam (110), and the second end of the rear support rod (900) is connected to the sea-side trapezoidal frame (200) to pull the sea-side trapezoidal frame (200).

9. The quay crane according to claim 8 further includes: A slide rail (620) is disposed on the rear beam (110); When the seaside trapezoidal frame (200) rotates from the upright state to the tilted state, the first end of the rear support rod (900) is slidably mounted on the slide rail (620).

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