Steerable wheel assembling component, trolley and quayside container crane

Abstract

The utility model discloses a steerable wheel assembling assembly, a trolley and a quayside container crane, the steerable wheel assembling assembly is used for the trolley of the quayside container crane with an annular girder, and the steerable wheel assembling assembly comprises a trolley frame, a wheel assembly and a wheel assembly, the trolley frame is rotationally connected with a trolley body of the trolley through the slewing mechanism; the wheel assembly is arranged on the trolley frame and provided with walking wheels used for being matched with a track of the annular girder, the rotating center line of the rotating mechanism is consistent with the vertical direction, and the rotating center line of the rotating mechanism and the center axis of the walking wheels are located in the same vertical plane and are perpendicular to each other; the horizontal guide assembly is arranged on the trolley frame and used for being matched with the side face of the track for guiding. The wheel assembling assembly can flexibly steer along the track of the annular girder, it is guaranteed that the wheel assembling assembly stably walks along the track of the annular girder, the safety and reliability of equipment are improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This application relates to port equipment, specifically to a steerable wheel assembly, a trolley, and a quayside container crane. Background Technology

[0002] The wheel assembly of the trolley is a crucial component of the trolley's running mechanism on port equipment such as quay cranes (also known as container cranes). It is responsible for supporting and moving the entire trolley, and its assembly type and structural characteristics directly affect the trolley's efficient and stable operation, making it a key factor in determining the overall operational efficiency. To meet the demand for significantly improved quay crane operational efficiency, continuously operating multiple trolleys on a circular beam (equivalent to a circular track) is an important development direction. For multiple trolleys to continuously operate on the circular beam track, the trolley wheels must be able to adapt to both straight and curved tracks. However, existing quay crane wheel assemblies are fixed to the trolley body with fixed supports, limiting the trolley's movement to straight tracks parallel to the longitudinal centerline of the trolley body, thus failing to meet the need for turning on curved tracks. Utility Model Content

[0003] The purpose of this application is to provide a steerable wheel assembly, a trolley, and a quay container crane. The wheel assembly can flexibly steer along the track of the ring beam, ensuring that the trolley travels stably along the track of the ring beam, improving the safety and reliability of the equipment, and extending the service life of the equipment.

[0004] To solve at least one of the above-mentioned technical problems, the technical solution of this application is as follows:

[0005] According to a first aspect of this application, a steerable wheel assembly is provided for a trolley of a quay container crane having a ring beam, comprising: a trolley frame; a slewing mechanism, the trolley frame being rotatably connected to the trolley body via the slewing mechanism; a wheel assembly, disposed on the trolley frame and having traveling wheels for engaging with the rails of the ring beam, the rotation centerline of the slewing mechanism being aligned with the vertical direction, and the rotation centerline of the slewing mechanism and the central axis of the traveling wheels being in the same vertical plane and perpendicular to each other; and a horizontal guide assembly, disposed on the trolley frame and for engaging with the side of the rails for guidance.

[0006] In one possible implementation of the first aspect described above, the slewing mechanism is located above the trolley frame and includes: an upper turntable for connection to the vehicle body; a lower turntable for connection to the trolley frame; and a slewing bearing, wherein the upper turntable and the lower turntable are rotatably connected via the slewing bearing.

[0007] In one possible implementation of the first aspect described above, the horizontal guide assembly includes: a bracket for connecting to the trolley frame; two horizontal guide wheels symmetrically located on both sides of the track for engaging with the two sides of the track; and two eccentric shafts vertically mounted on the bracket, each eccentric shaft being rotatably connected to its corresponding eccentric shaft.

[0008] In one possible implementation of the first aspect described above, there are two horizontal guide components, which are spaced apart along the traveling direction of the traveling wheel, with the traveling wheel located between the two horizontal guide components.

[0009] In one possible implementation of the first aspect described above, mounting plates are respectively provided at both ends of the trolley frame along the traveling direction of the traveling wheels, and the bracket of each horizontal guide component is connected to its corresponding mounting plate.

[0010] In one possible implementation of the first aspect described above, the wheel assembly further includes: a drive mechanism; a wheel axle, on which the traveling wheel is disposed, and the drive mechanism is used to drive the wheel axle to rotate.

[0011] In one possible implementation of the first aspect above, the drive mechanism is a motor, which is connected to the wheel axle via a reducer, and the reducer is provided with a torque arm for connection to the trolley frame.

[0012] In one possible implementation of the first aspect described above, the trolley frame is provided with two rotating bearings for cooperating with the wheel axle, and the traveling wheel is located between the two rotating bearings.

[0013] In one possible implementation of the first aspect described above, the trolley frame is further provided with two mounting slots and two pressure caps, each pressure cap cooperating with its corresponding mounting slot to form a mounting hole for accommodating the rotating bearing, and each pressure cap being provided with an end cap for cooperating with both axial ends of the rotating bearing.

[0014] In one possible implementation of the first aspect described above, each mounting hole is provided with an eccentric bearing sleeve for mating with a rotating bearing.

[0015] In one possible implementation of the first aspect mentioned above, two fixing blocks are provided on the trolley frame, each fixing block is provided with a downward inclined surface, each mounting slot is located on its corresponding inclined surface, and each pressure cap is provided on its corresponding inclined surface.

[0016] According to a second aspect of this application, a trolley is provided for a quayside container crane having a ring beam, including a wheel assembly, the wheel assembly being the steerable wheel assembly of the first aspect described above.

[0017] According to a third aspect of this application, a quayside container crane is provided, including a ring beam and a plurality of trolleys disposed on the ring beam, wherein the trolleys are the trolleys described in the second aspect above.

[0018] The above-mentioned technical solution of this application has at least one of the following beneficial effects:

[0019] According to the steerable wheel assembly of this application, the trolley frame is rotatably connected to the trolley body via a slewing mechanism. The rotation center line of the slewing mechanism is aligned with the vertical direction, and the rotation center line of the slewing mechanism is in the same vertical plane and perpendicular to the central axis of the traveling wheels. The horizontal guide assembly can cooperate with the side of the track. When the trolley curves along the track of the annular beam, the trolley frame rotates flexibly relative to the vehicle body via the slewing mechanism. The wheel assembly and the horizontal guide assembly rotate synchronously with the trolley frame, enabling the trolley to steer flexibly through curves. Moreover, the horizontal guide assembly can also cooperate with the side of the track for guidance, thereby ensuring the stable travel of the trolley along the track of the annular beam, avoiding wear and tear between the traveling wheels and the track, reducing wear, improving the safety and reliability of the equipment, extending the service life of the equipment, better meeting the needs of continuous operation of quay container cranes with annular beams, and greatly improving efficiency.

[0020] In addition, unless otherwise specified in the technical solution of this application, the technical solution can be implemented by conventional means in the field. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific 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 from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a steerable wheel assembly according to one embodiment of this application;

[0023] Figure 2 This is a cross-sectional view of a steerable wheel assembly according to one embodiment of this application.

[0024] Figure 3 A partial cross-sectional view of a steerable wheel assembly according to one embodiment of this application.

[0025] Figure 4 This is a partial top view of a steerable wheel assembly according to one embodiment of this application.

[0026] Explanation of the labels in the attached drawings:

[0027] 100 trolley frame; 101 mounting plate; 102 rotating bearing; 103 pressure cap; 104 end cap; 105 eccentric bearing sleeve; 106 bushing; 107 connecting piece; 108 fixing block;

[0028] Rotary mechanism 200; Upper turntable 201; Lower turntable 202; Rotary bearing 203;

[0029] Wheel assembly 300; travel wheel 301; drive mechanism 302; wheel axle 303; reducer 304; torque arm 305;

[0030] Horizontal guide assembly 400; bracket 401; horizontal guide wheel 402; eccentric shaft 403;

[0031] Body 500;

[0032] 600mm ring beam; 610mm track. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only some, not all, of the embodiments of this application, and are used merely to explain this application and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0034] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "both ends," "both sides," "bottom," and "top," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," "upper-level," "lower-level," "main," and "secondary," etc., are used for descriptive purposes only and can be simply used to more clearly distinguish different components, and should not be construed as indicating or implying relative importance.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] See Figures 1-4 The diagram schematically illustrates a steerable wheel assembly according to an embodiment of this application, primarily used for the trolley of a quay container crane with a ring beam 600, but also applicable to other port equipment such as a rail-mounted 610 type centralized crane with a similar structure. The steerable wheel assembly of this application may include: a trolley frame 100, a slewing mechanism 200, a wheel assembly 300, and a horizontal guide assembly 400.

[0037] The trolley frame 100 is rotatably connected to the trolley body 500 via a slewing mechanism 200. The wheel assembly 300 is mounted on the trolley frame 100 and has traveling wheels 301 for engaging with the track 610 of the ring beam 600. The rotation center line of the slewing mechanism 200 is aligned with the vertical direction, and the rotation center line of the slewing mechanism 200 and the central axis of the traveling wheels 301 are in the same vertical plane and perpendicular to each other. The horizontal guide assembly 400 is mounted on the trolley frame 100, and the wheel assembly 300 is used for guiding by engaging with the side of the track 610.

[0038] When the trolley curves along the track 610 of the annular beam 600, the trolley frame 100 rotates flexibly relative to the trolley body 500 via the slewing mechanism 200. The wheel assembly 300 and the horizontal guide assembly 400 rotate synchronously with the trolley frame 100, allowing the trolley to flexibly turn and curve. Furthermore, the horizontal guide assembly 400 can cooperate with the side of the track 610 for guidance, ensuring the trolley travels stably along the track 610 of the annular beam 600. When the trolley frame 100 rotates too much, the horizontal guide assembly 400 contacts the side of the track 610, causing the trolley frame 100 to be subjected to a reverse torque and rotate, ensuring that the travel trajectory of the traveling wheels 301 always conforms to the shape of the track 610.

[0039] Therefore, the steerable wheel assembly of this application can flexibly turn at the turning point of the track 610 of the ring beam 600 to make turns. The horizontal guide assembly 400 can also cooperate with the side of the track 610 to guide, thereby ensuring that the trolley travels stably along the track 610 of the ring beam 600, avoiding rail wear between the traveling wheels 301 and the track 610, reducing wear, improving the safety and reliability of the equipment, and extending the service life of the equipment. It can meet the needs of the trolley to turn at small radius and large angle, adapt to the track 610 with complex straight and curved shapes, better meet the needs of continuous operation of the quay container crane with the ring beam 600, and greatly improve efficiency.

[0040] In some embodiments, reference Figures 1-2 As shown, the slewing mechanism 200 is located above the trolley frame 100. The slewing mechanism 200 may include an upper turntable 201, a lower turntable 202, and a slewing bearing 203. The upper turntable 201 is connected to the vehicle body 500, and the lower turntable 202 is connected to the trolley frame 100. The upper turntable 201 and the lower turntable 202 are rotatably connected via the slewing bearing 203. The upper turntable 201 is connected to the outer ring of the slewing bearing 203, and the lower turntable 202 is connected to the inner ring of the slewing bearing 203. This ensures that the trolley frame 100 can rotate freely and flexibly during cornering, resulting in higher stability and reliability.

[0041] In some embodiments, reference Figure 1 , 4 As shown, the horizontal guide assembly 400 includes: a bracket 401, two horizontal guide wheels 402, and two eccentric shafts 403. The bracket 401 is connected to the trolley frame 100. The two horizontal guide wheels 402 are symmetrically located on both sides of the track 610, and they engage with the two sides of the track 610. The two eccentric shafts 403 are vertically mounted on the bracket 401, and each eccentric shaft 403 is rotatably connected to its corresponding eccentric shaft 403. The horizontal guide wheels 402 can be rollers, and a suitable gap can be maintained between each horizontal guide wheel 402 and the side of the track 610. The position of the horizontal guide wheels 402 and the distance between them and the side of the track 610 can be adjusted using the eccentric shafts 403.

[0042] When the traveling wheel 301 travels along the track 610, the two horizontal guide wheels 402 can clamp the two sides of the track 610 for guidance. When the traveling wheel 301 passes through the curved section of the track 610, the horizontal guide wheels 402 and the traveling wheel 301 rotate synchronously with the trolley frame 100, so that the trajectory of the traveling wheel 301 always conforms to the shape of the track 610. When the rotation angle of the trolley frame 100 is too large, the horizontal guide wheels 402 collide with the side of the track 610, causing the trolley frame 100 to be subjected to a reverse torque and rotate, ensuring that the trajectory of the traveling wheel 301 always conforms to the shape of the track 610.

[0043] In some embodiments, reference Figure 1 , 4 As shown, there are two horizontal guide components 400, which are spaced apart along the traveling direction of the traveling wheel 301, with the traveling wheel 301 located between the two horizontal guide components 400. This results in more even force distribution and greater stability and reliability.

[0044] In some embodiments, reference Figure 1 , 4 As shown, mounting plates 101 are respectively provided at both ends of the trolley frame 100 along the traveling direction of the traveling wheels 301, and the bracket 401 of each horizontal guide component 400 is connected to its corresponding mounting plate 101. The mounting plate 101 can adopt a flange structure and be detachably connected to the trolley frame 100 by bolts or other fasteners. This makes operation simpler and faster, and the structure more stable.

[0045] In some embodiments, reference Figures 1-3 As shown, the wheel assembly 300 also includes a drive mechanism 302, a wheel axle 303, and a traveling wheel 301 mounted on the wheel axle 303. The drive mechanism 302 drives the wheel axle 303 to rotate. It should be noted that the annular beam 600 typically has inner and outer tracks 610, and the trolley has wheel assembly assemblies that respectively cooperate with the two tracks 610. Therefore, when the traveling wheel 301 passes through the curved section of the two tracks 610, the drive mechanism 302 can be used to adjust the speed of each traveling wheel 301, thereby avoiding wheel slippage due to the difference in arc length between the inner and outer tracks 610.

[0046] Further, refer to Figures 1-2 As shown, the drive mechanism 302 is a motor, and it is connected to the wheel axle 303 via a reducer 304. The output end of the reducer 304 is connected to one end of the wheel axle 303, and the output end of the drive mechanism 302 is connected to the input end of the reducer 304. A torque arm 305 for connecting to the trolley frame 100 is provided on the reducer 304. As a result, the structure is more compact and stable, and the weight is reduced.

[0047] Further, refer to Figure 3 As shown, the tread of the traveling wheel 301 can be drum-shaped or have grooves to better match the flat-top structure of the track 610 and avoid additional friction and wear. The tread width of the traveling wheel 301 can be widened to increase the gap between its rim and the side of the track 610, avoid rail biting, and reduce contact wear.

[0048] In some embodiments, reference Figure 3 As shown, the trolley frame 100 is equipped with two rotating bearings 102 for cooperating with the wheel axle 303, and the traveling wheel 301 is located between the two rotating bearings 102. Bushings 106 can also be provided between the traveling wheel 301 and each rotating bearing 102, and between the rotating bearing 102 and the reducer 304. This makes operation more convenient and ensures better rotation of the wheel axle 303.

[0049] In some embodiments, reference Figure 3 As shown, the trolley frame 100 is also provided with two mounting slots (not shown in the figure) and two pressure caps 103. Each pressure cap 103 mates with its corresponding mounting slot to form a mounting hole for mounting the rotary bearing 102. Each pressure cap 103 is provided with an end cap 104 for mates with both axial ends of the rotary bearing 102. That is to say, the mounting slot can be a semi-circular slot, and the pressure cap 103 is also provided with a corresponding semi-circular slot. The two semi-circular slots form a circular mounting hole. The mounting slot and the pressure cap 103 are equivalent to a split structure, which makes installation and disassembly operations more convenient. The end caps 104 can also prevent foreign objects from entering the interior of the rotary bearing 102, making it safer, more reliable, and extending the service life of the equipment.

[0050] In some embodiments, reference Figure 3 As shown, each mounting hole is provided with an eccentric bearing sleeve 105 for mating with the rotating bearing 102. Thus, the height and horizontal position of the wheel axle 303 can be adjusted by the eccentric bearing sleeve 105, thereby ensuring the inclination and levelness of the traveling wheel 301 and meeting the requirements of the trolley assembly tolerance.

[0051] In some embodiments, reference Figure 1 , 3 As shown, the trolley frame 100 is provided with two fixing blocks 108, each fixing block 108 having a downward-facing inclined surface. Each mounting slot is located on its corresponding inclined surface, and each pressure cap 103 is located on its corresponding inclined surface. The trolley frame 100 may be provided with grooves corresponding to the two fixing blocks 108, and the trolley frame 100 and the fixing blocks 108 can be welded together. Therefore, the wheel assembly assembly can be disassembled and assembled, reducing the required lifting height and facilitating disassembly and installation.

[0052] Furthermore, the two end caps 104 on each rotating bearing 102 can be connected by multiple connectors 107, which can be bolts. The outer edge of the end cap 104 can press against the fixing block 108 and the pressure cap 103. The two end caps 104 and the eccentric bearing sleeve 105 are respectively provided with connecting holes that mate with the connectors 107. As a result, the structure is more compact and stable, and the operation is more convenient.

[0053] According to an embodiment of this application, a trolley is also provided for a quay container crane having a ring beam 600, including a wheel assembly assembly, which is the aforementioned steerable wheel assembly assembly. Other mechanisms of the trolley can employ corresponding mechanisms from the prior art, which will not be elaborated here.

[0054] A quay container crane provided according to an embodiment of this application includes a ring beam 600 and a plurality of the aforementioned trolleys mounted on the ring beam 600. Other mechanisms of the quay container crane may employ corresponding mechanisms from the prior art, which will not be elaborated here.

[0055] Based on the various embodiments of this application described above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0056] The above descriptions are merely some embodiments of this application, used only to illustrate the technical solutions of this application, and not to limit it. It should be understood that those skilled in the art can make improvements or substitutions based on the above descriptions without departing from the inventive concept of this application, and all such improvements and substitutions should fall within the protection scope of this application. In this case, all details can be replaced with equivalent elements, and materials, shapes, and sizes can also be arbitrary.

Claims

1. A steerable wheel assembly, characterized in that, The trolley used for a quay container crane with a ring beam includes: trolley frame; A slewing mechanism is provided, through which the trolley frame is rotatably connected to the body of the trolley; A wheel assembly is mounted on the trolley frame and has traveling wheels for cooperating with the track of the annular beam. The rotation center line of the slewing mechanism is aligned with the vertical direction, and the rotation center line of the slewing mechanism and the central axis of the traveling wheels are in the same vertical plane and perpendicular to each other. A horizontal guide assembly is mounted on the trolley frame and is used to cooperate with the side of the track for guidance.

2. The steerable wheel assembly according to claim 1, characterized in that, The slewing mechanism is located above the trolley frame, and the slewing mechanism includes: The upper turntable is used to connect to the vehicle body; The lower turntable is used to connect to the trolley frame; A slewing bearing is provided, and the upper turntable and the lower turntable are rotatably connected via the slewing bearing.

3. The steerable wheel assembly according to claim 1, characterized in that, The horizontal guide component includes: A bracket for connecting to the trolley frame; Two horizontal guide wheels are symmetrically located on both sides of the track to cooperate with the two sides of the track; Two eccentric shafts are vertically mounted on the bracket, and each eccentric shaft is rotatably connected to its corresponding eccentric shaft.

4. The steerable wheel assembly according to claim 3, characterized in that, There are two horizontal guide components, which are spaced apart along the traveling direction of the traveling wheel, and the traveling wheel is located between the two horizontal guide components. Mounting plates are respectively provided at both ends of the trolley frame along the traveling direction of the traveling wheels, and the bracket of each horizontal guide component is connected to its corresponding mounting plate.

5. The steerable wheel assembly according to claim 1, characterized in that, The wheel assembly also includes: Drive mechanism; A wheel axle, on which the traveling wheel is mounted, and a drive mechanism for driving the wheel axle to rotate.

6. The steerable wheel assembly according to claim 5, characterized in that, The drive mechanism is a motor, and the drive mechanism is connected to the wheel axle through a reducer. The reducer is provided with a torque arm for connecting to the trolley frame.

7. The steerable wheel assembly according to claim 5, characterized in that, The trolley frame is provided with two rotating bearings for cooperating with the wheel axle, and the traveling wheel is located between the two rotating bearings; The trolley frame is also provided with two mounting slots and two pressure caps. Each pressure cap cooperates with its corresponding mounting slot to form a mounting hole for placing the rotating bearing. Each pressure cap is provided with an end cap for cooperating with both axial ends of the rotating bearing.

8. The steerable wheel assembly according to claim 7, characterized in that, Each of the mounting holes is provided with an eccentric bearing sleeve for cooperating with the rotary bearing; The trolley frame is provided with two fixing blocks, each fixing block is provided with a downward inclined surface, each mounting slot is located on its corresponding inclined surface, and each pressure cap is provided on its corresponding inclined surface.

9. A small vehicle, characterized in that, For a quay container crane with a ring beam, a wheel assembly is included, said wheel assembly being a steerable wheel assembly as described in any one of claims 1 to 8.

10. A quayside container crane, characterized in that, It includes a ring beam and a plurality of trolleys disposed on the ring beam, wherein the trolleys are the trolleys described in claim 9 above.

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