Steerable trolley and quay crane having annular girder

Abstract

Provided in the present invention are a steerable trolley and a quay crane having an annular girder. The steerable trolley comprises: a trolley frame assembly comprising a bottom frame and two trolley frames, the two trolley frames being arranged opposite each other on the bottom frame in a first direction, an annular girder being arranged between the two trolley frames, and the bottom frame being located below the annular girder; two pairs of wheel assemblies, one of which is arranged on the trolley frame located on the inner side of the annular girder and is rollingly connected to an inner rail, and the other of which is arranged on the trolley frame located on the outer side of the annular girder and is rollingly connected to an outer rail, the center distance between the pair of wheel assemblies on the outer rail being greater than the center distance between the pair of wheel assemblies on the inner rail, and each wheel assembly being driven by an independent driving member; and a power connection assembly, the power connection assembly being arranged on the bottom frame and slidably electrically connected to a conductor rail below the annular girder, and the power connection assembly being electrically connected to each driving member. The steerable trolley of the present application can be applied to an annular girder.

Description

A steerable trolley and a quay bridge with a ring beam.

[0001] This application claims priority to Chinese Patent Application No. 202520274841.5, filed on February 20, 2025, entitled "A Circular Sliding Contact Line Device and a Quay Bridge with a Circular Beam", and Chinese Patent Application No. 202510440764.0, filed on April 9, 2025, entitled "A Turnable Trolley and a Quay Bridge with a Circular Beam", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of transportation machinery technology, specifically to a steerable vehicle and a quay crane with a ring beam. Background Technology

[0003] The trolley is a crucial component of port container cranes, responsible for horizontal movement and vertical lifting or lowering of containers. Its operating mode and layout significantly impact the overall stability, efficiency, and continuous operation capability of the crane. Currently, port container crane trolleys can only operate individually on straight tracks, reciprocating during loading and unloading operations. This operating mode results in low efficiency. To achieve higher efficiency, ports have begun using quay cranes with circular tracks, where multiple trolleys operate continuously in a circular loop. However, existing trolleys designed for straight tracks cannot properly mount on circular tracks, are unsuitable for double-row circular tracks, and cannot achieve turning or cornering. Therefore, there is an urgent need for a trolley that can be used on circular beams and achieve rapid cornering with small radii of curvature. Summary of the Invention

[0004] In view of this, the present invention provides a turnable trolley that is applicable to a ring beam and can achieve rapid cornering with a small radius of curvature.

[0005] To solve at least one of the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a turnable trolley for a quay crane with a ring girder, the ring girder comprising an inner rail and an outer rail arranged sequentially along the inner side of the ring girder in a horizontal direction, and the turnable trolley comprising:

[0007] A frame assembly, comprising a bottom frame and two frames, the two frames being disposed opposite each other on the bottom frame in a first direction, a ring beam being disposed between the two frames and the bottom frame being located below the ring beam;

[0008] Two pairs of wheel assemblies, one pair of which is mounted on the frame located inside the annular beam and is rolledly connected to the inner rail, and the other pair is mounted on the frame located outside the annular beam and is rolledly connected to the outer rail. The center distance between the pair of wheel assemblies on the outer rail is greater than the center distance between the pair of wheel assemblies on the inner rail. Each wheel assembly rotates to steer and is driven by an independent drive unit to travel along the inner or outer rail.

[0009] The power connection assembly is mounted on the bottom frame and is electrically connected to the sliding contact line below the ring beam. The power connection assembly is also electrically connected to each of the drive components.

[0010] In one embodiment of the present invention, the bottom frame includes:

[0011] Two end beams are arranged opposite each other along the first direction. Each frame is set on its corresponding end beam, and each end beam is equipped with a lifting mechanism.

[0012] Two connecting beams are used to be set between the two end beams and connected to the two end beams respectively.

[0013] In one embodiment of the present invention, each frame includes:

[0014] Two support legs are arranged vertically and distributed relative to each other on the corresponding end beams along the second direction.

[0015] The main beam is positioned between the two legs and connected to each of the two legs.

[0016] The second direction is perpendicular to the first direction, and both the second direction and the first direction are perpendicular to the vertical direction.

[0017] In one embodiment of the invention, the bottom of the two outriggers is connected to the corresponding end beams, and the main beam of each frame is located on the upper end of the side of the corresponding two outriggers facing the other frame. The main beam is detachably connected to the two outriggers through two connecting flanges.

[0018] In one embodiment of the present invention, each wheel assembly includes:

[0019] The omnidirectional wheel is located below the main beam and is rotatably connected to the main beam via a turntable to allow the omnidirectional wheel to rotate freely. The omnidirectional wheel is connected to a corresponding drive component, which is used to drive the omnidirectional wheel to move. The drive component is located on the corresponding turntable.

[0020] The center distance between a pair of omnidirectional wheels on the outer rail is greater than the center distance between a pair of omnidirectional wheels on the inner rail.

[0021] In one embodiment of the present invention, each outrigger is provided with a limiting component, which is located below the corresponding omnidirectional wheel. The limiting component is used to cooperate with the upper flange of the inner or outer rail bearing beam for guiding and limiting.

[0022] In one embodiment of the present invention, the limiting component includes:

[0023] Mount the bracket and connect the bracket to the corresponding support leg;

[0024] The horizontal wheel is mounted on the mounting bracket and is used to cooperate with the side of the upper flange of the inner or outer rail bearing beam that is away from the ring beam.

[0025] The anti-roller is mounted on the mounting bracket and located below the horizontal roller. The anti-roller is used to mate with the lower surface of the upper flange of the inner or outer rail support beam.

[0026] In one embodiment of the present invention, a gap is left between the horizontal wheel and the side of the upper flange of the inner or outer rail supporting beam that is away from the annular beam, and the gap is adjustable; a gap is left between the anti-roll wheel and the lower surface of the upper flange of the inner or outer rail supporting beam, and the distance is adjustable.

[0027] In one embodiment of the present invention, the power connection assembly includes:

[0028] Carbon brush holder, the carbon brush holder is mounted on one of the connecting beams;

[0029] The carbon brush is mounted on a carbon brush holder and is electrically connected to the sliding contact line under the ring beam and to each drive component.

[0030] In one embodiment of the present invention, the sliding contact line includes:

[0031] Multiple sliding contact line supports are spaced apart below the annular beam, and the multiple sliding contact line supports form a ring corresponding to the annular beam.

[0032] The control slide rail assembly is set on multiple sliding contact rail supports and is a ring corresponding to the ring beam;

[0033] The power supply slide rail group is installed on multiple sliding contact rail supports and is a ring corresponding to the ring beam. The power supply slide rail group is located below the control slide rail group, and one end of the carbon brush is electrically connected to the control slide rail group and the power supply slide rail group respectively.

[0034] In one embodiment of the present invention, each sliding contact line bracket includes:

[0035] A horizontal support is installed below the ring beam, and the control slide rail assembly is installed on the side of the horizontal support away from the ring beam.

[0036] A vertical support is installed below the horizontal support and extends vertically, and the power supply sliding wire group is correspondingly installed on the vertical support;

[0037] The reinforcing rib has one end connected to the horizontal support and the other end connected to the vertical support.

[0038] In one embodiment of the present invention, the control slide rail group includes a plurality of control slide rails, which are spaced horizontally to form a plurality of rings corresponding to the ring beam, and a gap is provided between two adjacent control slide rails.

[0039] The power supply slide rail assembly includes multiple power supply slide rails arranged sequentially along the vertical direction, and each power supply slide rail is a ring corresponding to the ring beam.

[0040] In one embodiment of the present invention, the carbon brush includes:

[0041] Horizontal carbon brushes are arranged horizontally and are electrically connected to each control slide wire.

[0042] The longitudinal carbon brushes are arranged vertically and are electrically connected to each power supply slide wire.

[0043] In one embodiment of the present invention, the carbon brush holder includes:

[0044] A horizontal carbon brush holder is provided, with one end of the holder connected to the horizontal carbon brush and the other end connected to the connecting beam.

[0045] The longitudinal carbon brush holder is set vertically below the transverse carbon brush holder and connected to the transverse carbon brush holder. One end of the longitudinal carbon brush holder is connected to the longitudinal carbon brush, and the other end of the longitudinal carbon brush holder is connected to the connecting beam.

[0046] In one embodiment of the present invention, the sliding contact line further includes:

[0047] The waveguide is set on multiple horizontal supports and located on the side of the control slide group away from the vertical support. The waveguide forms a ring in the horizontal direction corresponding to the ring beam.

[0048] The transverse carbon brush holder is equipped with a waveguide communication interface, and the transverse carbon brush holder is electrically connected to the waveguide through the waveguide communication interface.

[0049] Secondly, the present invention also provides a quay bridge with a ring beam, including a turnable trolley as described in any of the above embodiments.

[0050] The above-described technical solution of the present invention has at least one of the following beneficial effects:

[0051] The steerable vehicle of this invention features a pair of wheel assemblies mounted on a frame located inside and outside a ring beam. The base distances (center-to-center distances between the wheel assemblies) on the inner and outer sides are asymmetrical, with the outer rail base distance being greater than the inner rail base distance. This ensures that the wheel's cornering trajectory perfectly coincides with the track curve. Each wheel assembly can rotate for steering and is driven independently by a drive unit to travel along either the inner or outer rail. Differential turning can be achieved by controlling the rotational speed and torque of each wheel assembly, solving the wheel slippage problem caused by the difference in arc length between the inner and outer rails and improving the stability and smoothness of the vehicle when cornering quickly with a small radius of curvature. Attached Figure Description

[0052] Figure 1 is a schematic diagram of the structure of the turnable trolley traveling along the ring beam in some embodiments of the present invention;

[0053] Figure 2 is a schematic diagram of the structure of the turnable vehicle in some embodiments of the present invention;

[0054] Figure 3 is a front view of a turnable vehicle in some embodiments of the present invention;

[0055] Figure 4 is a partial structural diagram of the inner side of the turnable trolley in some embodiments of the present invention;

[0056] Figure 5 is a partial structural schematic diagram of a quay bridge with a ring beam in some embodiments of the present invention;

[0057] Figure 6 is a schematic diagram of the structure of the power connection component and the sliding contact line in some embodiments of the present invention.

[0058] Reference numerals: 100, Circular beam; 110, Inner rail; 120, Outer rail; 200, Frame assembly; 210, Bottom frame; 211, End beam; 212, Connecting beam; 213, Lifting mechanism; 220, Frame; 221, Outrigger; 222, Main beam; 300, Wheel assembly; 301, Drive component; 310, Universal wheel; 311, Turntable; 400, Power connection assembly; 410, Carbon brush bracket; 420, Carbon brush; 421, Transverse carbon brush; 422, Longitudinal carbon brush; 500, Limiting assembly; 510, Mounting bracket; 520, Horizontal wheel; 530, Anti-roll wheel; 600, Sliding contact line bracket; 610, Horizontal bracket; 620, Vertical bracket; 630, Reinforcing rib; 700, Control sliding line assembly; 701, Control sliding line; 800, Power supply slide rail assembly; 801, Power supply slide rail; 900, Waveguide wire. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0060] The following is a detailed description of a turnable vehicle according to an embodiment of the present invention, with reference to the accompanying drawings.

[0061] As shown in Figure 1, the steerable trolley of this embodiment can be used in a quay crane with a ring beam 100. The ring beam 100 includes an inner rail 110 arranged horizontally on the inner side of the ring beam 100 and an outer rail 120 arranged horizontally on the outer side of the ring beam 100. Specifically, as shown in Figures 2 and 3, the steerable trolley includes: a frame assembly 200, two pairs of wheel assemblies 300, and a power connection assembly 400. The frame assembly 200 includes a bottom frame 210 and two frames 220, which are arranged opposite to each other on the bottom frame 210 along a first direction. A ring beam 100 is arranged between the two frames 220, with the bottom frame 210 located below the ring beam 100. One pair of wheel assemblies 300 is arranged on the frame 220 located inside the ring beam 100 and is rotatably connected to the inner rail 110. The other pair is arranged on the frame 220 located outside the ring beam 100 and is rotatably connected to the outer rail 120. The center distance between the pair of wheel assemblies 300 on the outer rail 120 is greater than the center distance between the pair of wheel assemblies 300 on the inner rail 110. Each wheel assembly 300 rotates to steer and is driven by an independent drive member 301 to travel along the inner rail 110 or the outer rail 120. A power connection assembly 400 is arranged on the bottom frame 210 and is slidably electrically connected to a sliding contact line below the ring beam 100. The power connection assembly 400 is electrically connected to each drive member 301.

[0062] In this embodiment, both the inner rail 110 on the inner side of the annular beam 100 and the outer rail 120 on the outer side of the annular beam 100 include straight segments and arc segments. The straight segments of the inner rail 110 and the outer rail 120 are parallel, the arc segments are concentric, and the straight segments are tangent to the arc segments. In order to pass through the arc segments quickly and smoothly, the present invention provides a pair of wheel assemblies 300 on the frame 220 located on the inner side of the annular beam 100 and the frame 220 located on the outer side of the annular beam 100, respectively. Each wheel assembly 300 can rotate about a vertical axis to turn. At the same time, each wheel assembly 300 is driven by an independent drive unit 301 to travel along the inner rail 110 or the outer rail 120. Differential turning can be achieved by controlling the speed and torque of each wheel assembly 300. Furthermore, the center distance between a pair of wheel assemblies 300 on the outer rail 120 is greater than the center distance between a pair of wheel assemblies 300 on the inner rail 110, which allows the pair of wheel assemblies 300 on the outer rail 120 to travel a greater distance in the same amount of time compared to the pair of wheel assemblies 300 on the inner rail 110. This enables the vehicle to make turns with a small radius of curvature and reduces slippage or instability caused by wheel speed differences during turns, thereby improving the stability and smoothness of the vehicle when making fast turns with a small radius of curvature.

[0063] As shown in Figures 2 and 3, the bottom frame 210 includes two end beams 211 and two connecting beams 212. The two end beams 211 are arranged opposite each other along a first direction, and each frame 220 is respectively mounted on its corresponding end beam 211, and each end beam 211 is provided with a lifting mechanism 213; the two connecting beams 212 are respectively mounted between the two end beams 211 and respectively connected to the two end beams 211.

[0064] In this embodiment, the two end beams 211 are parallel to each other and their length direction is consistent with the second direction, and the two connecting beams 212 are parallel to each other and their length direction is consistent with the first direction. The second direction is perpendicular to the first direction, and both the second and first directions are perpendicular to the vertical direction. The connection of the two end beams 211 and the two connecting beams 212 can form a rectangular frame, thereby improving the structural strength and rigidity of the bottom frame 210. Furthermore, the end beams 211 have an outward cantilever structure, allowing the installation of a lifting mechanism 213.

[0065] As shown in Figures 2 and 3, each frame 220 includes two support legs 221 and a main beam 222. The two support legs 221 are arranged vertically and distributed opposite each other on the corresponding end beams 211 in a second direction; the main beam 222 is arranged between the two support legs 221 and connected to the two support legs 221 respectively.

[0066] In this embodiment, the main beams 222 of the two frames 220 are arranged in parallel opposite directions, and the length direction of each main beam 222 is consistent with the second direction. The bottom of the two support legs 221 are connected to the corresponding end beams 211. The main beam 222 of each frame 220 is located on the upper end of the side of the corresponding two support legs 221 facing the other frame 220. The main beam 222 is detachably connected to the two support legs 221 through two connecting flanges. The horizontal distance between the main beam 222 and the two support legs 221 can be adjusted by adding or removing shims at the connecting flanges, thereby adjusting the distance between the wheel assembly 300 and the outer rail 120 or inner rail 110, ensuring the connection between the wheel assembly 300 and the outer rail 120 or inner rail 110, thereby facilitating the arrangement and assembly.

[0067] As shown in Figures 2 and 3, each wheel assembly 300 includes a swivel wheel 310. The swivel wheel 310 is disposed below the main beam 222 and rotatably connected to the main beam 222 via a turntable 311 to allow the swivel wheel 310 to rotate freely. The swivel wheel 310 is connected to a corresponding drive member 301, which drives the swivel wheel 310 to move. The drive member 301 is disposed on the corresponding turntable 311. The center distance between a pair of swivel wheels 310 on the outer rail 120 is greater than the center distance between a pair of swivel wheels 310 on the inner rail 110. Exemplarily, the swivel wheel 310 can be mounted on a wheel frame, which is connected to the corresponding turntable 311. The drive member 301 can be a hollow shaft geared motor. The wheel axle of the swivel wheel 310 passes through the hollow shaft hole of the hollow shaft geared motor and is secured by a locking disc to transmit torque. The housing of the hollow shaft geared motor can be fixed by connecting it to the wheel frame via a torque arm.

[0068] In this embodiment, the axis of rotation of the turntable 311 is aligned with the vertical direction, allowing the omnidirectional wheels 310 to rotate. This enables the trolley to turn when passing through the arc segments of the outer rail 120 or the inner rail 110. Simultaneously, each omnidirectional wheel 310 is driven by an independent drive unit 301, allowing each wheel to travel along the inner rail 110 or the outer rail 120. Differential turning is achieved by controlling the rotational speed and torque of each wheel 310 through the drive unit 301, thus solving the wheel slippage problem caused by the difference in arc length between the inner and outer rails. Furthermore, the center distance between a pair of omnidirectional wheels 310 on the outer rail 120 is greater than the center distance between a pair of omnidirectional wheels 310 on the inner rail 110. That is, the base distances (center distances between a pair of wheel assemblies) on the inner and outer sides are asymmetrical, with the outer rail base distance being greater than the inner rail base distance. This ensures that the wheel's turning trajectory completely coincides with the track curve, improving the stability and smoothness of the trolley when rapidly turning with a small radius of curvature.

[0069] As shown in Figures 3 and 4, each support leg 221 is provided with a limiting component 500, which is located below the corresponding omnidirectional wheel 310. The limiting component 500 is used to cooperate with the upper flange of the rail bearing beam of the inner rail 110 or outer rail 120 for guiding and limiting. Specifically, the limiting component 500 may include: a mounting bracket 510, a horizontal wheel 520, and an anti-roll wheel 530. The mounting bracket 510 is connected to the corresponding support leg 221; the horizontal wheel 520 is mounted on the mounting bracket 510 and is used to cooperate with the side of the upper flange of the rail bearing beam of the inner rail 110 or outer rail 120 away from the annular beam 100; the anti-roll wheel 530 is mounted on the mounting bracket 510 and located below the horizontal wheel 520, and is used to cooperate with the lower surface of the upper flange of the rail bearing beam of the inner rail 110 or outer rail 120.

[0070] In this embodiment, when the trolley travels at an angle, the horizontal wheel 520 can act as a guide device, abutting against and rotating with the side surface of the upper flange of the inner rail 110 or outer rail 120, preventing the swivel wheel 310 from biting the rail and experiencing premature wear. When the trolley turns, if one of the swivel wheels 310 lifts off course, the anti-roll wheel 530 can act as a safety device, lifting up to abut against the lower surface of the upper flange of the inner rail 110 or outer rail 120, pressing against the upper flange of the upper rail beam above it to prevent the trolley from tipping over. This effectively improves the safety of the trolley when cornering at high speeds.

[0071] As shown in Figures 3 and 4, a gap is maintained between the horizontal wheel 520 and the side of the upper flange of the inner rail 110 or outer rail 120 that faces away from the annular beam 100, and this gap is adjustable. Similarly, a gap is maintained between the anti-roll wheel 530 and the lower surface of the upper flange of the inner rail 110 or outer rail 120, and this gap is also adjustable. Therefore, the gap between the horizontal wheel 520 and the side of the upper flange of the inner rail 110 or outer rail 120 that faces away from the annular beam 100, or the gap between the anti-roll wheel 530 and the lower surface of the upper flange of the inner rail 110 or outer rail 120, can be adjusted when manufacturing or assembly errors exist. Specifically, the horizontal wheel 520 can be mounted on an eccentric shaft, which is set on the mounting bracket 510. By rotating the eccentric shaft, the distance between the horizontal wheel 520 and the side of the upper flange of the inner rail 110 or outer rail 120 facing away from the annular beam 100 can be adjusted. After the eccentric shaft is rotated to the correct position, it can be locked using a nut or other locking device. Furthermore, the mounting bracket 510 can be connected to the support leg 221 via a flange. The distance between the horizontal wheel 520 and the side of the upper flange of the inner rail 110 or outer rail 120 facing away from the annular beam 100 can be adjusted by adding or removing shims at the flange. The mounting bracket 510 has a waist-shaped hole extending vertically on the side facing the inner rail 110 or the outer rail 120. The distance between the anti-roller 530 and the lower surface of the upper flange of the rail bearing beam of the inner rail 110 or the outer rail 120 can be adjusted by adjusting the position of the anti-roller 530 in the waist-shaped hole. Alternatively, the distance between the anti-roller 530 and the lower surface of the upper flange of the rail bearing beam of the inner rail 110 or the outer rail 120 can be adjusted by using the aforementioned eccentric shaft structure.

[0072] As shown in Figure 3, the power connection assembly 400 includes a carbon brush holder 410 and a carbon brush 420. The carbon brush holder 410 is mounted on one of the connecting beams 212; the carbon brush 420 is mounted on the carbon brush holder 410 and is electrically connected to the sliding contact line below the annular beam 100 and to each drive component 301. Therefore, by using the carbon brush 420 in full sliding contact with the sliding contact line, a closed-loop, continuous, and stable power supply to the turnable trolley can be achieved.

[0073] As shown in Figures 5 and 6, the sliding contact line of this embodiment may include: multiple sliding contact line supports 600, a control sliding contact line group 700, and a power supply sliding contact line group 800. The multiple sliding contact line supports 600 are spaced apart below the annular beam 100, forming a ring corresponding to the annular beam 100; the control sliding contact line group 700 is correspondingly disposed on the multiple sliding contact line supports 600 and forms a ring corresponding to the annular beam 100; the power supply sliding contact line group 800 is correspondingly disposed on the multiple sliding contact line supports 600 and forms a ring corresponding to the annular beam 100, and is located below the control sliding contact line group 700; one end of a carbon brush 420 is slidably electrically connected to both the control sliding contact line group 700 and the power supply sliding contact line group 800, and the other end of the carbon brush 420 is used to connect to each driving component 301.

[0074] In this embodiment, the power supply slide rail assembly 800 is used to provide current to multiple trolleys on the annular beam 100, and the control slide rail assembly 700 is used to transmit control signals to the multiple trolleys on the annular beam 100 and control the current transmitted by the power supply slide rail assembly 800. By setting multiple sliding contact rail supports 600 below the annular beam 100, and the multiple sliding contact rail supports 600 forming a ring corresponding to the annular beam 100, and then arranging the control slide rail assembly 700 and the power supply slide rail assembly 800 on the multiple sliding contact rail supports 600 respectively, and connecting the carbon brushes 420 electrically connected to the multiple trolleys on the annular beam 100 to the control slide rail assembly 700 and the power supply slide rail assembly 800 respectively, current can be provided to the multiple trolleys on the annular beam 100, and the multiple trolleys can be controlled respectively, thereby improving the working efficiency of the quay crane. Furthermore, by placing the power supply slide rail assembly 800 below the control slide rail assembly 700, compared to placing the power supply slide rail assembly 800 and the control slide rail assembly 700 side by side, it can reduce the space occupied and simplify the layout. On the other hand, since the power supply slide rail assembly 800 is vertically positioned below the control slide rail assembly 700, when the trolley is rapidly navigating a curve, the power supply slide rail assembly 800 and the control slide rail assembly 700 can jointly bear the lateral force transmitted by the trolley through the carbon brush 420, thereby preventing excessive wear of the sliding contact line and also preventing the carbon brush 420 from getting stuck in the power supply slide rail assembly 800 or the control slide rail assembly 700, thus improving power supply stability and signal transmission stability.

[0075] As shown in Figure 6, each sliding contact line bracket 600 includes a horizontal bracket 610, a vertical bracket 620, and a reinforcing rib 630. The horizontal bracket 610 is positioned below the annular beam 100, and the control sliding contact line assembly 700 is correspondingly positioned on the side of the horizontal bracket 610 away from the annular beam 100. The vertical bracket 620 is positioned below the horizontal bracket 610 and extends vertically, and the power supply sliding contact line assembly 800 is correspondingly positioned on the vertical bracket 620 along its length. One end of the reinforcing rib 630 is connected to the horizontal bracket 610, and the other end of the reinforcing rib 630 is connected to the vertical bracket 620.

[0076] In this embodiment, the length direction of the vertical support 620 is perpendicular to the plane where the horizontal support 610 is located, and one end of the reinforcing rib 630 is connected to the horizontal support 610, and the other end of the reinforcing rib 630 is connected to the vertical support 620. At this time, the horizontal support 610, the vertical support 620 and the reinforcing rib 630 form a triangular support. The triangular support is lightweight and can bear the large lateral force transmitted by the carbon brush 420 when the trolley passes through the curve at high speed, thereby effectively improving the power supply stability and signal transmission stability.

[0077] As shown in Figure 6, the control slide rail group 700 includes multiple control slide rails 701, which are spaced horizontally to form multiple rings corresponding to the ring beam 100.

[0078] In this embodiment, the multiple control slides 701 in the control slide group 700 are all formed into rings corresponding to the annular beam 100, and a gap is provided between two adjacent control slides 701. Therefore, by providing a gap between two adjacent control slides 701, a buffer space can be provided for the carbon brush 420 when the trolley is rapidly passing through a curve, avoiding direct collision between the carbon brush 420 and the control slide 701. This prevents excessive wear of the control slide 701 and improves the service life of both the control slide 701 and the carbon brush 420.

[0079] As shown in Figure 6, the power supply slide rail group 800 includes multiple power supply slide rails 801 arranged sequentially along the vertical direction, and each power supply slide rail 801 is a ring corresponding to the ring beam 100.

[0080] In this embodiment, when the trolley passes through a curve at high speed, multiple power supply guide wires 801 arranged in sequence along the vertical direction can be subjected to force simultaneously, thereby bearing the large lateral force transmitted by the carbon brushes 420, thus effectively improving the power supply stability and signal transmission stability.

[0081] As shown in Figure 6, the carbon brush 420 includes a transverse carbon brush 421 and a longitudinal carbon brush 422. The transverse carbon brush 421 is arranged horizontally and is slidably electrically connected to each control slide wire 701; the longitudinal carbon brush 422 is arranged vertically and is slidably connected to each power supply slide wire 801; the transverse carbon brush 421 and the longitudinal carbon brush 422 are mounted on a carbon brush holder 410, which is used to connect to the connecting beam 212 of the trolley.

[0082] In this embodiment, the longitudinal carbon brush 422 is perpendicular to the transverse carbon brush 421, and the transverse carbon brush 421 is slidably connected to each control slide wire 701, while the longitudinal carbon brush 422 is slidably connected to each power supply slide wire 801. The transverse carbon brush 421 and the longitudinal carbon brush 422 always move synchronously, thereby further improving the power supply stability and signal transmission stability.

[0083] In one embodiment of the present invention, the carbon brush holder 410 includes a transverse carbon brush holder (not shown) and a longitudinal carbon brush holder (not shown). The transverse carbon brush holder is arranged horizontally, with one end connected to a transverse carbon brush 421 and the other end connected to the connecting beam 212 of the trolley. The longitudinal carbon brush holder is arranged vertically below and connected to the transverse carbon brush holder, with one end connected to a longitudinal carbon brush 422 and the other end connected to the connecting beam 212 of the trolley. By separately providing the transverse and longitudinal carbon brush holders to support the transverse and longitudinal carbon brushes 421 and 422 respectively, the structural strength can be effectively improved. When the trolley passes through curves at high speed, damage to the transverse and longitudinal carbon brushes 421 and 422 can be avoided, thus extending their service life.

[0084] As shown in Figure 6, the sliding contact line also includes a waveguide 900, which is correspondingly mounted on multiple horizontal supports 610 and located on the side of the control sliding contact line assembly 700 opposite to the vertical support 620. The waveguide 900 forms a ring along the horizontal direction corresponding to the annular beam 100. A waveguide communication interface is provided on the transverse carbon brush support, and the transverse carbon brush support is electrically connected to the waveguide 900 through the waveguide communication interface.

[0085] In this embodiment, the waveguide 900 is used to communicate with multiple trolleys on the annular beam 100. By setting the waveguide 900 into a ring corresponding to the annular beam 100, it can communicate with multiple trolleys simultaneously, thereby improving the working efficiency of the quay crane.

[0086] Secondly, the present invention also provides a quay bridge with a ring beam, including a turnable trolley as described in any of the above embodiments.

[0087] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an" or "a," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "connected" or "linked," and similar terms, are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up," "down," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0088] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A turnable trolley, characterized in that, For a quay crane with a ring girder, the ring girder includes an inner rail arranged sequentially along the horizontal direction on the inner side of the ring girder and an outer rail arranged on the outer side of the ring girder, and the turnable trolley includes: A chassis assembly, the chassis assembly including a bottom frame and two frames, the two frames being disposed opposite each other on the bottom frame along a first direction, the annular beam being disposed between the two frames and the bottom frame being located below the annular beam; Two pairs of wheel assemblies, one pair of which is mounted on the frame located inside the annular beam and is rolledly connected to the inner rail, and the other pair is mounted on the frame located outside the annular beam and is rolledly connected to the outer rail. The center distance between the pair of wheel assemblies on the outer rail is greater than the center distance between the pair of wheel assemblies on the inner rail. Each wheel assembly rotates to steer and is driven by an independent drive unit to travel along the inner rail or the outer rail. A power connection assembly is disposed on the bottom frame and is slidably electrically connected to the sliding contact line below the annular beam, and the power connection assembly is electrically connected to each of the driving components.

2. The turnable trolley according to claim 1, characterized in that, The bottom frame includes: Two end beams are arranged opposite each other along the first direction. Each frame is respectively mounted on its corresponding end beam, and each end beam is respectively provided with a lifting mechanism. Two connecting beams are respectively disposed between the two end beams and respectively connected to the two end beams.

3. The turnable trolley according to claim 2, characterized in that, Each of the aforementioned frames includes: Two support legs, the two support legs being arranged vertically and distributed relative to each other on the corresponding end beams along a second direction; The main beam is disposed between the two legs and connected to the two legs respectively; Wherein, the second direction is perpendicular to the first direction, and both the second direction and the first direction are perpendicular to the vertical direction.

4. The turnable trolley according to claim 3, characterized in that, The bottom of the two outriggers is connected to the corresponding end beams. The main beam of each frame is located on the upper side of the corresponding two outriggers facing the other frame. The main beam is detachably connected to the two outriggers via two connecting flanges.

5. The turnable trolley according to claim 4, characterized in that, Each of the wheel assemblies includes: The omnidirectional wheel is located below the main beam and is rotatably connected to the main beam via a turntable to allow the omnidirectional wheel to rotate freely. The omnidirectional wheel is connected to a corresponding drive component, which is used to drive the omnidirectional wheel to move. The drive component is located on the corresponding turntable. The center distance between a pair of omnidirectional wheels on the outer rail is greater than the center distance between a pair of omnidirectional wheels on the inner rail.

6. The turnable trolley according to claim 5, characterized in that, Each of the outriggers is provided with a limiting component, which is located below the corresponding omnidirectional wheel. The limiting component is used to cooperate with the upper flange of the inner rail or the outer rail support beam for guiding and limiting.

7. The turnable trolley according to claim 6, characterized in that, The limiting component includes: Mounting bracket, wherein the mounting bracket is connected to the corresponding support leg; A horizontal wheel is mounted on the mounting bracket and is used to cooperate with the side of the upper flange of the inner rail or the outer rail that is away from the annular beam. An anti-roller is provided on the mounting bracket and located below the horizontal wheel. The anti-roller is used to cooperate with the lower surface of the upper flange of the inner rail or the outer rail support beam.

8. The turnable trolley according to claim 7, characterized in that, The horizontal roller has an adjustable gap between itself and the upper flange of the inner or outer rail's supporting beam, which is away from the side of the annular beam. The reverse roller also has an adjustable gap between itself and the lower surface of the upper flange of the inner or outer rail's supporting beam.

9. The turnable trolley according to claim 2, characterized in that, The power connection assembly includes: A carbon brush holder, the carbon brush holder being disposed on one of the connecting beams; A carbon brush is mounted on the carbon brush holder and is slidably electrically connected to the sliding contact line below the annular beam and to each of the driving components.

10. The turnable vehicle according to claim 9, characterized in that, The sliding contact line includes: Multiple sliding contact line supports are spaced apart below the annular beam and form a ring corresponding to the annular beam. A control slide rail assembly is provided, which is correspondingly arranged on multiple slide rail supports and is annular in shape corresponding to the annular beam; A power supply slide rail assembly is provided, which is correspondingly arranged on multiple sliding contact rail supports and is a ring corresponding to the ring beam. The power supply slide rail assembly is located below the control slide rail assembly, and one end of the carbon brush is slidably electrically connected to the control slide rail assembly and the power supply slide rail assembly respectively.

11. The turnable vehicle according to claim 10, characterized in that, Each of the aforementioned conductor rail brackets includes: A horizontal support is provided below the annular beam, and the control slide rail assembly is correspondingly provided on the side of the horizontal support away from the annular beam. A vertical support is provided below the horizontal support and extends vertically, and the power supply slide wire assembly is correspondingly provided on the vertical support. A reinforcing rib, one end of which is connected to the horizontal support and the other end of which is connected to the vertical support.

12. The turnable vehicle according to claim 11, characterized in that, The control slide rail assembly includes multiple control slide rails, which are spaced horizontally to form multiple rings corresponding to the annular beam, and a gap is provided between two adjacent control slide rails. The power supply slide rail assembly includes multiple power supply slide rails arranged sequentially along the vertical direction, and each power supply slide rail is a ring corresponding to the ring beam.

13. The turnable vehicle according to claim 12, characterized in that, The carbon brush includes: A transverse carbon brush, wherein the transverse carbon brush is arranged in a horizontal direction and is slidably electrically connected to each of the control slide wires; A longitudinal carbon brush, wherein the longitudinal carbon brush is arranged in a vertical direction and is slidably electrically connected to each of the power supply slide wires; The carbon brush holder includes: A transverse carbon brush holder is provided, which is arranged in a horizontal direction, with one end of the transverse carbon brush holder connected to the transverse carbon brush and the other end of the transverse carbon brush holder connected to the connecting beam. A longitudinal carbon brush holder is arranged vertically below and connected to the transverse carbon brush holder. One end of the longitudinal carbon brush holder is connected to the longitudinal carbon brush, and the other end of the longitudinal carbon brush holder is connected to the connecting beam.

14. The turnable vehicle according to claim 13, characterized in that, The sliding contact line also includes: A waveguide is provided on one of the horizontal supports and located on the side of the control slide group away from the vertical support. The waveguide forms a ring in the horizontal direction corresponding to the annular beam. The transverse carbon brush holder is provided with a waveguide communication interface, and the transverse carbon brush holder is slidably electrically connected to the waveguide through the waveguide communication interface.

15. A quay bridge with a ring-shaped main beam, characterized in that, Includes the turnable vehicle as described in any one of claims 1-14.

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