Travelling device of container crane and container crane

Abstract

The utility model relates to the technical field of container crane, disclose container crane's car operation device and container crane, include: drive wheel, differential, including gear seat, first gear and second gear, power output shaft, two power output shafts are connected with first gear and second gear respectively, shift fork clutch mechanism, first connecting piece and gear seat are slidably connected, second connecting piece and a power output shaft are slidably connected, in the first position, first connecting piece is connected with drive wheel, two power output shafts rotate in the same direction, in the second position, second connecting piece is connected with drive wheel, two power output shafts rotate reversely. The utility model through adjusting the position of first connecting piece and second connecting piece, make two power output shafts rotate in the same direction or reversely, thereby realize the straight line of car operation device and in situ steering, need not set up additional push rod, connecting rod etc. mechanism, make the whole structure more simple, reduce the occupation to additional space.

Description

Technical Field

[0001] This utility model relates to the field of container crane technology, specifically to the trolley traveling device of a container crane and the container crane itself. Background Technology

[0002] A rubber-tired gantry crane (RTG) is a specialized machine used in large, professional container yards for loading and unloading standard containers. It is suitable not only for container terminal yards but also for dedicated container yards. The advantage of a rubber-tired gantry crane lies in its tire-mounted trolley traveling mechanism, which facilitates turning and rotating in place, providing strong mobility and flexibility, effectively maximizing the value of the container gantry crane. However, existing trolley traveling devices require the introduction of additional steering mechanisms (such as push rods or connecting rods) to achieve in-situ turning, resulting in a more complex overall structure and a larger space requirement. Utility Model Content

[0003] In view of this, the present invention provides a trolley traveling device for a container crane and a container crane, so as to solve the problem that the existing trolley traveling devices have a relatively complex overall structure and occupy a large space.

[0004] In a first aspect, this utility model provides a trolley traveling device for a container crane, comprising: a drive wheel; a differential including a gear seat, a first gear, and a second gear, both the first gear and the second gear being mounted on the gear seat; two power output shafts, each connected to the first gear and the second gear respectively; and a shift fork clutch mechanism including a first connector and a second connector, the first connector being slidably connected to the gear seat, and the second connector being slidably connected to one of the power output shafts. The shift fork clutch mechanism has a first position and a second position. In the first position, the first connector is connected to the drive wheel, and the two power output shafts rotate in the same direction. In the second position, the second connector is connected to the drive wheel, and the two power output shafts rotate in opposite directions.

[0005] Beneficial effects: By adjusting the positions of the first and second connecting parts, the two power output shafts can rotate in the same direction or in opposite directions, thereby realizing the straight-line forward movement and on-the-spot turning of the trolley traveling device. There is no need to set up additional push rods, connecting rods and other mechanisms, making the overall structure simpler and reducing the occupation of extra space.

[0006] In one alternative embodiment, the first connector and the second connector are respectively disposed on opposite sides of the drive wheel.

[0007] Beneficial effect: It facilitates the positional switching of the first and second connecting parts, so that the first and second connecting parts can be connected to and separated from the drive wheel respectively.

[0008] In one optional embodiment, the drive wheel, the first gear, and the second gear are coaxially arranged, and the two power output shafts are respectively connected to the two sides of the first gear and the second gear that are far apart from each other. One of the power output shafts passes through the gear seat, the drive wheel, the first connector, and the second connector. The first connector is located on the side of the drive wheel close to the gear seat, and the second connector is located on the side of the drive wheel away from the gear seat.

[0009] Beneficial effects: By setting the drive wheel, the first gear, and the second gear coaxially with the power output shaft, the positions of the first and second connecting parts can be adjusted by moving them axially, thus improving the convenience and accuracy of adjusting the positions of the first and second connecting parts.

[0010] In one optional embodiment, the drive wheel surrounds the power output shaft and has a first limiting groove extending through it axially. The first connector has a first insertion portion protruding from the side facing the drive wheel, and the first insertion portion is disposed opposite to the first limiting groove. The second connector has a second insertion portion protruding from the side facing the drive wheel, and the second insertion portion is disposed opposite to the first limiting groove.

[0011] Beneficial effects: In the first position, the first connector and the drive wheel are connected by the first insertion part and the first limiting groove, thereby realizing power transmission. In the second position, the second connector and the drive wheel are connected by the second insertion part and the first limiting groove, thereby realizing power transmission. Furthermore, it can ensure the stability and reliability of the connection between the first connector and the drive wheel and the connection between the second connector and the drive wheel.

[0012] In one alternative embodiment, the trolley running device further includes a fixed frame, and in the second position, the first connector is connected to the fixed frame.

[0013] Beneficial effect: When the second connecting piece is connected to the drive wheel, the first connecting piece is connected and fixed to the fixed frame, ensuring that the first connecting piece does not rotate, thereby ensuring the accuracy of the trolley traveling device in straight lines and turning in place.

[0014] In one optional embodiment, the fixed frame is provided with a second limiting groove, and the side of the first connector facing the fixed frame protrudes to form a third insertion part, which is disposed opposite to the second limiting groove.

[0015] Beneficial effect: In the second position, the first connector and the fixed frame are connected and fixed by the cooperation of the third insertion part and the second limiting groove, thereby ensuring the stability of the first connector.

[0016] In one optional embodiment, the shift fork clutch mechanism further includes a first shift fork, a second shift fork, and a linear drive structure. The first shift fork is rotatably connected to the first connecting member, the second shift fork is rotatably connected to the second connecting member, and the linear drive structure is drively connected to the first shift fork and the second shift fork.

[0017] Beneficial effects: The linear drive structure drives the first and second shift forks to move simultaneously along a straight line, realizing the switching of the positions of the first and second connecting parts. The overall structure is simple and easy to operate.

[0018] In one alternative embodiment, the differential further includes a third gear and a fourth gear, both of which are meshed between the first gear and the second gear.

[0019] Beneficial effect: By using the third and fourth gears to reverse the driving force of the first gear to the second gear, the reverse rotation of the two power output shafts is achieved, enabling the trolley traveling device to turn in place.

[0020] In one optional embodiment, the gear housing includes a sleeve, a frame, and a connecting shaft. The sleeve and the frame are connected. The third gear and the fourth gear are both rotatably connected to the frame via the connecting shaft. The power output shaft is rotatably disposed within the sleeve. The first connecting member is slidably connected to the sleeve via a spline structure, and the second connecting member is connected to the power output shaft via a spline structure.

[0021] Beneficial effects: The first connecting piece is slidably connected to the gear seat through a spline structure, and the second connecting piece is slidably connected to the power output shaft through a spline structure. Therefore, it is possible to realize the position conversion of the first and second connecting pieces, and to realize the transmission of the driving force of the drive wheel to the gear seat and the power output shaft.

[0022] Secondly, this utility model also provides a container crane, including the trolley traveling device of the container crane described above. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in 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 utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of a single-row, two-wheeled trolley running device in related technologies;

[0025] Figure 2 for Figure 1 A schematic diagram of the single-row, two-wheeled trolley running device from another angle;

[0026] Figure 3 This is a structural schematic diagram of a double-row, four-wheeled trolley running device in related technologies.

[0027] Figure 4 for Figure 1 A schematic diagram of the double-row, four-wheeled trolley running device from another angle;

[0028] Figure 5 This is a schematic diagram of the structure of a large vehicle running device in the first position according to an embodiment of the present utility model;

[0029] Figure 6 for Figure 5 A schematic diagram of the trolley running device from another angle;

[0030] Figure 7 for Figure 5 The front view of the trolley running device shown;

[0031] Figure 8 This is a schematic diagram of the structure of a large vehicle running device in the second position according to an embodiment of the present utility model;

[0032] Figure 9 for Figure 8 A schematic diagram of the trolley running device from another angle;

[0033] Figure 10 for Figure 8 The front view of the trolley running device shown;

[0034] Figure 11 This is an exploded view of a trolley running device according to an embodiment of the present utility model;

[0035] Figure 12 This is a schematic diagram of the structure of the single-row, double-wheel trolley running device according to an embodiment of the present utility model;

[0036] Figure 13 This is a schematic diagram of the structure of the double-row four-wheeled trolley running device according to an embodiment of the present utility model.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Drive wheel; 11. First limiting groove; 2. Differential; 21. Gear seat; 211. Rod sleeve; 212. Frame; 2121. First rod; 2122. Second rod; 213. Connecting shaft; 22. First gear; 23. Second gear; 24. Third gear; 25. Fourth gear; 3. Power output shaft; 4. Shift fork clutch mechanism; 41. First connecting piece; 411. First insertion part; 412. Third insertion part; 42. Second connecting piece; 421. Second insertion part; 43. First shift fork; 44. Second shift fork; 5. Fixed frame; 51. Second limiting groove; 6. Wheel;

[0039] 1', push rod; 2', connecting rod. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] The following is combined with Figures 5 to 13 The following describes embodiments of the present invention.

[0042] According to an embodiment of the present invention, in one aspect, a trolley running device for a container crane is provided, comprising: a drive wheel 1; a differential 2, including a gear seat 21, a first gear 22, and a second gear 23, both the first gear 22 and the second gear 23 being mounted on the gear seat 21; two power output shafts 3, each connected to the first gear 22 and the second gear 23 respectively; and a shift fork clutch mechanism 4, including a first connecting member 41 and a second connecting member 42, the first connecting member 41 being slidably connected to the gear seat 21, and the second connecting member 42 being slidably connected to one of the power output shafts 3. The shift fork clutch mechanism 4 has a first position and a second position. In the first position, the first connecting member 41 is connected to the drive wheel 1, and the two power output shafts 3 rotate in the same direction. In the second position, the second connecting member 42 is connected to the drive wheel 1, and the two power output shafts 3 rotate in opposite directions.

[0043] By adjusting the positions of the first connecting member 41 and the second connecting member 42, the two power output shafts 3 can rotate in the same direction or in opposite directions, thereby realizing the straight-line forward movement and turning in place of the trolley. There is no need to set up additional push rods 1', connecting rods 2' and other mechanisms, making the overall structure simpler and reducing the occupation of additional space.

[0044] Specifically, such as Figure 12 As shown, both power output shafts 3 are connected to wheels 6. When the two power output shafts 3 rotate in the same direction, the two wheels 6 rotate in the same direction, thereby realizing the straight-line forward movement of the trolley traveling device. When the two power output shafts 3 rotate in opposite directions, the two wheels 6 rotate in opposite directions, thereby realizing the in-situ turning of the trolley traveling device.

[0045] It is worth noting that, such as Figures 1 to 4 As shown, in related technologies, the trolley traveling devices of tire-mounted container cranes mainly include two forms: single-row two-wheel type and double-row four-wheel type. For the single-row two-wheel type, during turning, a hydraulic or electric push rod drives one tire to turn, and a connecting rod simultaneously drives the other tire to turn, completing the turning process. This type of device has a simple structure and flexible operation, but it causes significant tire wear when turning in place. To reduce tire wear, the entire machine needs to be driven to a location with paved surfaces for turning, which is cumbersome. For the double-row four-wheel type, during turning, a hydraulic or electric push rod drives one tire to turn, and a connecting rod simultaneously drives the other tire to turn, completing the turning process. Because a differential is installed in the tire drive shaft, the movement of all tires is independent during turning, and the two tires can rotate in opposite directions, allowing for easy turning. Compared to the single-row two-wheel type, this structure achieves turning through tire rolling, resulting in less tire wear during turning, and also allows for stronger four-wheel load capacity. However, whether it is a single-row two-wheel or double-row four-wheel steering system, it requires steering power mechanisms such as push rods and connecting rods, resulting in a complex overall structure.

[0046] In this embodiment, the driving wheel 1 is rotated by a motor, and the operation mode of the trolley running device can be changed by altering the engagement method between the shift fork clutch mechanism 4, the driving wheel 1, and the differential 2. The overall structure is simple, easy to operate, and cost-effective. Furthermore, in this embodiment, the two tires are arranged side by side. Compared with the single-row, two-wheel trolley running device in related technologies, tire wear is less when turning on the spot, the structure is more compact, and space is saved.

[0047] Furthermore, the trolley running device in this embodiment can also be a double-row four-wheel trolley running device. Specifically, the synchronous steering of the front and rear rows of tires can be achieved through a linkage.

[0048] In one embodiment, such as Figures 5 to 10 As shown, the first connector 41 and the second connector 42 are respectively located on opposite sides of the drive wheel 1. This arrangement facilitates the repositioning of the first connector 41 and the second connector 42, allowing them to connect and disconnect from the drive wheel 1 respectively.

[0049] It is worth noting that when the first connector 41 is connected to the first side of the drive wheel 1, the second connector 42 is spaced apart from the second side of the drive wheel 1; when the second connector 42 is connected to the second side of the drive wheel 1, the first connector 41 is spaced apart from the first side of the drive wheel 1.

[0050] Furthermore, in one embodiment, such as Figures 5 to 10 As shown, the drive wheel 1, the first gear 22, and the second gear 23 are coaxially arranged. Two power output shafts 3 are connected to the opposite sides of the first gear 22 and the second gear 23, respectively. One of the power output shafts 3 passes through the gear seat 21, the drive wheel 1, the first connector 41, and the second connector 42. The first connector 41 is located on the side of the drive wheel 1 closest to the gear seat 21, and the second connector 42 is located on the side of the drive wheel 1 furthest from the gear seat 21. By coaxially arranging the drive wheel 1, the first gear 22, and the second gear 23 with the power output shaft 3, the positions of the first connector 41 and the second connector 42 can be adjusted by moving them axially, thus improving the convenience and accuracy of position adjustment.

[0051] Specifically, such as Figures 5 to 10 As shown, the second connecting member 42, the drive wheel 1, the first connecting member 41, the first gear 22 and the second gear 23 are arranged sequentially along the axial direction.

[0052] In one embodiment, such as Figures 5 to 11 As shown, the drive wheel 1 has a first limiting groove 11 extending axially around the power output shaft 3. A first connector 41 protrudes from the side facing the drive wheel 1, forming a first insertion portion 411, which is opposite to the first limiting groove 11. A second connector 42 protrudes from the side facing the drive wheel 1, forming a second insertion portion 421, which is opposite to the first limiting groove 11. In the first position, the first connector 41 and the drive wheel 1 are connected by the first insertion portion 411 and the first limiting groove 11, thus achieving power transmission. In the second position, the second connector 42 and the drive wheel 1 are connected by the second insertion portion 421 and the first limiting groove 11, thus achieving power transmission. This ensures the stability and reliability of the connections between the first connector 41 and the drive wheel 1, as well as the connections between the second connector 42 and the drive wheel 1.

[0053] It is worth noting that there is no direct connection between the drive wheel 1, the power output shaft 3, and the gear seat 21. That is, when the drive wheel 1 rotates, it will not directly drive the power output shaft 3 and the gear seat 21 to rotate. Instead, it will indirectly drive the power output shaft 3 and the gear seat 21 to rotate through the first connector 41 and the second connector 42.

[0054] In one embodiment, such as Figures 5 to 11 As shown, the trolley traveling device also includes a fixed frame 5. In the second position, the first connecting member 41 is connected to the fixed frame 5. When the second connecting member 42 is connected to the drive wheel 1, the first connecting member 41 is connected and fixed to the fixed frame 5, ensuring that the first connecting member 41 does not rotate, thereby ensuring the accuracy of the trolley traveling device in straight-line forward movement and in-situ turning conversion.

[0055] It is worth noting that, such as Figures 5 to 10 As shown, the fixed frame 5 is located on the side of the first connector 41 away from the drive wheel 1.

[0056] Furthermore, in one embodiment, such as Figure 11 As shown, the fixed frame 5 has a second limiting groove 51, and the side of the first connecting member 41 facing the fixed frame 5 protrudes to form a third insertion part 412, which is disposed opposite to the second limiting groove 51. In the second position, the first connecting member 41 and the fixed frame 5 are connected and fixed by the cooperation of the third insertion part 412 and the second limiting groove 51, thereby ensuring the stability of the first connecting member 41.

[0057] It is worth noting that, such as Figure 11 As shown, the first connector 41 has a first insertion portion 411 and a third insertion portion 412 protruding from opposite sides along the axial direction.

[0058] In one embodiment, such as Figures 5 to 11 As shown, the shift fork clutch mechanism 4 also includes a first shift fork 43, a second shift fork 44, and a linear drive structure. The first shift fork 43 is rotatably connected to the first connecting member 41, and the second shift fork 44 is rotatably connected to the second connecting member 42. The linear drive structure is drively connected to the first shift fork 43 and the second shift fork 44. The linear drive structure drives the first shift fork 43 and the second shift fork 44 to move simultaneously along a straight line, realizing the switching of the positions of the first connecting member 41 and the second connecting member 42. The overall structure is simple and easy to operate.

[0059] Specifically, the linear drive structure can be a linear motor. Of course, it can also be other types of drive components, such as cylinders, hydraulic cylinders, motors, and lead screw combinations.

[0060] It should be noted that the first connecting member 41 can rotate relative to the first shift fork 43, and the second connecting member 42 can rotate relative to the second shift fork 44. That is, when the first connecting member 41 rotates, it will not cause the first shift fork 43 to rotate synchronously, and when the second connecting member 42 rotates, it will not cause the second shift fork 44 to rotate synchronously.

[0061] In one embodiment, such as Figures 5 to 11 As shown, the differential 2 also includes a third gear 24 and a fourth gear 25, both of which are meshed between the first gear 22 and the second gear 23. The third gear 24 and the fourth gear 25 transmit the driving force of the first gear 22 in the opposite direction to the second gear 23, thereby realizing the reverse rotation of the two power output shafts 3, enabling the trolley traveling device to turn in place.

[0062] Specifically, the first gear 22 and the second gear 23 are both bevel gears, and the third gear 24 and the fourth gear 25 are both planetary gears.

[0063] In one embodiment, such as Figures 5 to 11 As shown, the gear housing 21 includes a sleeve 211, a frame 212, and a connecting shaft 213. The sleeve 211 and the frame 212 are connected. The third gear 24 and the fourth gear 25 are both rotatably connected to the frame 212 via the connecting shaft 213. The power output shaft 3 is rotatably disposed within the sleeve 211. The first connecting member 41 is slidably connected to the sleeve 211 via a spline structure, and the second connecting member 42 is slidably connected to the power output shaft 3 via a spline structure. The first connecting member 41 is slidably connected to the sleeve 211 of the gear housing 21 via a spline structure, and the second connecting member 42 is slidably connected to the power output shaft 3 via a spline structure. Therefore, it is possible to both switch the positions of the first connecting member 41 and the second connecting member 42 and transmit the driving force of the drive wheel 1 to the gear housing 21 and the power output shaft 3.

[0064] Specifically, such as Figures 5 to 11 As shown, the shaft hole of the first connector 41 has an internal spline, and the outer wall of the sleeve 211 has an external spline. The internal and external splines enable a slidable connection between the first connector 41 and the sleeve 211. The shaft hole of the second connector 42 has an internal spline, and the outer wall of the power output shaft 3 has an external spline. The internal and external splines enable a slidable connection between the second connector 42 and the power output shaft 3.

[0065] Furthermore, such as Figures 5 to 11As shown, the frame 212 includes a first rod 2121 and two second rods 2122, which are arranged at intervals relative to each other. The first rod 2121 is connected to the ends of the two second rods 2122 on the same side. One end of the rod sleeve 211 is connected to the first rod 2121, and the other end of the rod sleeve 211 extends toward the drive wheel 1. Two connecting shafts 213 are provided, and the two connecting shafts 213 are respectively connected to the two second rods 2122. The third gear 24 and the fourth gear 25 are rotatably connected to the two second rods 2122 through the two connecting shafts 213.

[0066] According to an embodiment of the present invention, another aspect is provided: a container crane including the trolley traveling device of the above-described container crane.

[0067] like Figures 8 to 10 As shown, the shift fork clutch mechanism 4 is in the second position. When the main unit executes the forward command, the control system controls the linear drive structure to push the first shift fork 43 and the second shift fork 44 to the left, causing the second insertion part 421 to disengage from the first limiting groove 11 and the second connecting piece 42 to separate from the drive wheel 1. At the same time, the first insertion part 411 engages with the first limiting groove 11, and the first connecting piece 41 connects to the drive wheel 1. At this time, the driving force of the drive wheel 1 is transmitted to the gear seat 21 through the first connecting piece 41 to drive the gear seat 21 to rotate, thereby causing the two power output shafts 3 to rotate in the same direction and at the same speed, so that the two tires rotate in the same direction and at the same speed.

[0068] like Figures 5 to 7 As shown, the shift fork clutch mechanism 4 is in the first position. When the main unit executes the stationary steering command, the control system controls the linear drive structure to push the first shift fork 43 and the second shift fork 44 to the right, causing the first insertion part 411 to disengage from the first limiting groove 11, and the first connecting piece 41 to separate from the drive wheel 1. At the same time, the third insertion part 412 engages with the second limiting groove 51, the first connecting piece 41 is connected and fixed to the fixed frame 5 to fix the gear seat 21, the second insertion part 421 engages with the first limiting groove 11, and the second connecting piece 42 is connected to the drive wheel 1. At this time, the driving force of the drive wheel 1 is transmitted through the second connecting piece 42 to the power output shaft 3 connected to the first gear 22, so as to drive the power output shaft 3 and the first gear 22 to rotate. Under the transmission of the third gear 24 and the fourth gear 25, the second gear 23 rotates in the opposite direction at the same speed, so that the other power output shaft 3 rotates in the opposite direction at the same speed, so that the two tires rotate in the opposite direction at the same speed.

[0069] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A trolley traveling device for a container crane, characterized in that, include: Drive wheel (1); The differential (2) includes a gear seat (21), a first gear (22) and a second gear (23), both of which are mounted on the gear seat (21); There are two power output shafts (3), and the two power output shafts (3) are respectively connected to the first gear (22) and the second gear (23); The shift fork clutch mechanism (4) includes a first connecting member (41) and a second connecting member (42). The first connecting member (41) is slidably connected to the gear seat (21), and the second connecting member (42) is slidably connected to one of the power output shafts (3). The shift fork clutch mechanism (4) has a first position and a second position. In the first position, the first connecting member (41) is connected to the drive wheel (1), and the two power output shafts (3) rotate in the same direction. In the second position, the second connecting member (42) is connected to the drive wheel (1), and the two power output shafts (3) rotate in opposite directions.

2. The trolley traveling device for a container crane according to claim 1, characterized in that, The first connector (41) and the second connector (42) are respectively disposed on opposite sides of the drive wheel (1).

3. The trolley traveling device for a container crane according to claim 2, characterized in that, The drive wheel (1), the first gear (22) and the second gear (23) are coaxially arranged. The two power output shafts (3) are respectively connected to the two sides of the first gear (22) and the second gear (23) that are far away from each other. One of the power output shafts (3) passes through the gear seat (21), the drive wheel (1), the first connector (41) and the second connector (42). The first connector (41) is located on the side of the drive wheel (1) close to the gear seat (21), and the second connector (42) is located on the side of the drive wheel (1) away from the gear seat (21).

4. The trolley traveling device for a container crane according to claim 3, characterized in that, The drive wheel (1) is provided with a first limiting groove (11) that surrounds the power output shaft (3) and extends through it axially. The first connector (41) has a first insertion part (411) that protrudes from the side facing the drive wheel (1). The first insertion part (411) is disposed opposite to the first limiting groove (11). The second connector (42) has a second insertion part (421) that protrudes from the side facing the drive wheel (1). The second insertion part (421) is disposed opposite to the first limiting groove (11).

5. The trolley traveling device for a container crane according to any one of claims 1 to 4, characterized in that, The trolley running device also includes a fixed frame (5), and in the second position, the first connector (41) is connected to the fixed frame (5).

6. The trolley traveling device for a container crane according to claim 5, characterized in that, The fixed frame (5) has a second limiting groove (51), and the first connector (41) has a third plug-in part (412) protruding from the side facing the fixed frame (5), and the third plug-in part (412) is arranged opposite to the second limiting groove (51).

7. The trolley traveling device for a container crane according to any one of claims 1 to 4, characterized in that, The shift fork clutch mechanism (4) further includes a first shift fork (43), a second shift fork (44) and a linear drive structure. The first shift fork (43) is rotatably connected to the first connecting member (41), the second shift fork (44) is rotatably connected to the second connecting member (42), and the linear drive structure is drively connected to the first shift fork (43) and the second shift fork (44).

8. The trolley traveling device for a container crane according to any one of claims 1 to 4, characterized in that, The differential (2) further includes a third gear (24) and a fourth gear (25), both of which are meshed between the first gear (22) and the second gear (23).

9. The trolley traveling device for a container crane according to claim 8, characterized in that, The gear seat (21) includes a sleeve (211), a frame (212), and a connecting shaft (213). The sleeve (211) and the frame (212) are connected. The third gear (24) and the fourth gear (25) are rotatably connected to the frame (212) through the connecting shaft (213). The power output shaft (3) is rotatably disposed in the sleeve (211). The first connecting member (41) is slidably connected to the sleeve (211) through a spline structure. The second connecting member (42) is connected to the power output shaft (3) through a spline structure.

10. A container crane, characterized in that, The container crane includes the trolley traveling device according to any one of claims 1 to 9.

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