Crown block walking mechanism and walking control method

Abstract

The invention discloses a crown block walking mechanism and a walking control method, and relates to the field of crown block equipment. When a walking part walks and moves on a main beam along a rail part, a limiting and locking wheel set is supported on the rail part in a rolling mode through a rolling face of the limiting and locking wheel set to provide lateral and vertical rolling limiting effects for the walking part; the stability of installation, connection and walking of the walking part on the rail part is improved, the situation that the walking part is affected by wind power and shaking of the rail part and deviates relative to the rail is prevented, the running stability and the moving positioning precision of the walking part are improved, the walking part can be prevented from overturning and falling from the rail part, and the using safety of the crown block is improved; when the walking part statically stays on the track part in the braking state, the limiting and locking wheel set can be adjusted to enter the locking state, and the walking part is positioned and locked on the track part, so that the stability of the walking part statically locked on the track is improved, and the walking part is prevented from sliding and displacing on the track part under the influence of wind power and shaking of the track part.

Description

Technical Field

[0001] This invention belongs to the field of overhead crane equipment, and more specifically, relates to an overhead crane traveling mechanism and a traveling control method. Background Technology

[0002] Overhead cranes, also known as bridge cranes, are highly efficient material handling equipment that spans across workshops, warehouses, or material yards. Their main structure consists of a main beam (bridge) erected on elevated tracks on both sides and a lifting trolley that moves laterally along the main beam, enabling precise lifting and conveying of materials in three-dimensional space. This equipment is widely used in industries such as metallurgy, manufacturing, logistics, and ports, and is commonly used for heavy object loading and unloading, production line material transfer, and equipment installation and maintenance.

[0003] For example, Chinese patent CN120482949B discloses an overhead crane, an overhead crane transportation system, and a control method thereof. The overhead crane includes a main body, a detection device, and an attitude adjustment device. The main body is used for traveling along the main track, picking up and placing goods, and transporting them. The detection device is mounted on the main body and is used to detect environmental information. The attitude adjustment device connects the main body and the detection device, and can adjust the angle of the detection surface of the detection device relative to the main body by adjusting the attitude of the detection device. During the operation, maintenance, and troubleshooting of the overhead crane, if the detection device on the overhead crane experiences angular or positional deviations, the attitude adjustment device can correct the attitude of the detection device, ensuring the normal operation of the overhead crane transportation system.

[0004] In existing technologies, the lifting and conveying components of overhead cranes are typically installed, connected, and moved via wheels and rails, a method with relatively limited stability. Especially in applications such as ports or ships, the lifting and conveying components are susceptible to wind and ship swaying, which not only reduces operational stability and positioning accuracy but can also pose a risk of capsizing in severe cases. Summary of the Invention

[0005] In view of the problems in the related technologies, the present invention proposes a crane traveling mechanism and traveling control method to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a crane traveling mechanism, comprising a main beam and a moving part. The moving part includes a track part and a traveling part. The traveling part can be adjusted back and forth between a traveling state and a braking state. When entering the traveling state, the traveling part can travel along the track part on the main beam. When entering the braking state, the traveling part can also remain statically on the track part. Limiting and locking parts are installed on both sides of the walking part in the walking direction. Each limiting and locking part includes a limiting and locking wheel assembly. When the walking part is in the walking state, the limiting and locking wheel assembly can be rolled and supported on the track part by its rolling surface, providing lateral and vertical rolling limiting function for the walking part. When the walking part is in the braking state, the limiting and locking wheel assembly can also abut its end face against the track part, so as to position and lock the walking part on the track part by the frictional resistance between the end face of the limiting and locking wheel assembly and the track part.

[0007] Preferably, the traveling unit includes a large trolley and a small trolley. The top surfaces of the main beam and the large trolley are both fixedly equipped with rails. The large trolley is mounted on the rails on the top surface of the main beam, and the small trolley is mounted on the rails on the top surface of the large trolley. Both the large trolley and the small trolley are equipped with traveling drive components that can travel along the rails. Limit locking parts are installed on both sides of the moving direction of the large trolley and the small trolley.

[0008] Preferably, the traveling drive component includes a traveling wheel and a drive motor. The outer circumference of the traveling wheel is rolled and supported on the top surface of the track section. The drive motor is connected to the traveling wheel via a drive shaft, and a crane brake is installed on the drive shaft.

[0009] Preferably, the track section includes a support frame, a limiting frame, and a traveling frame, which are connected sequentially from bottom to top to form a cross-shaped track structure; Furthermore, multiple reinforcing ribs are fixedly installed between the inner side of the support frame and the bottom surface of the limiting frame.

[0010] Preferably, the limiting locking wheel assembly includes a mounting frame, on which a lateral limiting locking wheel and a vertical limiting locking wheel are mounted. The rolling surface of the lateral limiting locking wheel can roll against the side of the limiting frame, and the rolling surface of the vertical limiting locking wheel can roll against the bottom surface of the limiting frame.

[0011] Preferably, the lateral limiting locking wheel includes a side limiting wheel, which is rotatably mounted on the mounting frame via a rotating shaft, and the outer ring of the side limiting wheel rolls against the side of the limiting frame; The vertical limiting locking wheel includes a translation drive assembly and a lower limiting wheel. The lower limiting wheel is mounted on the mounting frame via the translation drive assembly, and the outer ring of the lower limiting wheel rolls against the bottom surface of the limiting frame. When the traveling part enters a braking state, the translation drive assembly can drive the lower limiting wheel to move closer to the track part, so that the end face of the lower limiting wheel is in close contact with the side of the support frame. The translation drive assembly can also drive the lower limiting wheel to move away from the track part when the traveling part enters a traveling state, so that the end face of the lower limiting wheel separates from the side of the support frame.

[0012] Preferably, the vertical limiting locking wheel further includes a lifting drive assembly. The lifting drive assembly can drive the lower limiting wheel to move synchronously downward when the translation drive assembly drives the lower limiting wheel to move closer to the track, so that the top of the outer ring of the lower limiting wheel separates from the bottom surface of the limiting frame. The lifting drive assembly can also drive the lower limiting wheel to move synchronously upward to reset when the translation drive assembly drives the lower limiting wheel to move away from the track, so that the outer ring of the lower limiting wheel abuts against the bottom surface of the limiting frame again.

[0013] Preferably, the lower limit wheel is provided with a plurality of positioning through holes, and a friction positioning component is fixedly installed on the end face of the lower limit wheel through the positioning through holes; The friction positioning assembly includes a friction locking plate. One side of the friction locking plate is provided with a plurality of positioning rods that correspond one-to-one with the positioning through holes. The end of the positioning rod can be rotatably fitted with a positioning nut via an external thread.

[0014] Preferably, the translation drive assembly includes a positioning seat and a telescopic drive component. The telescopic drive component is fixedly mounted on the mounting frame. A connecting seat that slides with the mounting frame is fixedly mounted on the positioning seat, and the connecting seat is fixedly connected to the telescopic end of the telescopic drive component. A roller frame is also mounted on the positioning seat, and the lower limit wheel is rotatably mounted on the roller frame. The telescopic drive component can drive the connecting seat, positioning seat, roller frame, and lower limit wheel to move and telescopically adjust along the mounting frame. The lifting drive component includes a limiting guide plate, a guide pin, a lifting guide shaft, and a connecting block. The lifting guide shaft is fixedly installed on the positioning seat. The connecting block and the guide pin are both fixedly installed on the roller frame. The connecting block is slidably connected to the lifting guide shaft. The limiting guide plate is fixedly installed on the mounting frame, and the limiting guide plate is provided with a guide groove that can slide and engage with the guide pin. When the guide pin moves towards the track, it moves downward synchronously under the limiting and guiding action of the guide groove. The guide groove includes an upper horizontal support groove, a guide inclined groove, and a lower horizontal propulsion guide groove that are connected sequentially from top to bottom; The positioning seat is provided with a limiting groove, and a sliding mounting seat is slidably installed in the limiting groove. A buffer spring is installed at the end of the sliding mounting seat away from the track. The lifting guide shaft is fixedly installed on the sliding mounting seat.

[0015] This invention also discloses a crane travel control method, which uses the above-mentioned crane travel mechanism and a control system connected to the above-mentioned crane travel mechanism. The specific steps are as follows: The control system can control the walking unit to adjust back and forth between walking and braking states; When the traveling unit enters the traveling state, it can travel and move along the track on the main beam. At this time, the limiting and locking wheel set is supported on the track by its rolling surface, providing lateral and vertical rolling limiting function for the traveling unit. When the traveling unit enters the braking state, it remains statically on the track, and at this time, the limit locking wheel set abuts its end face against the track, so as to lock the traveling unit on the track by the frictional resistance between the end face of the limit locking wheel set and the track.

[0016] Preferably, the traveling mechanism is equipped with a crane capable of lifting containers, and the control system is a remote control system for port container cranes, so that the control system can drive the traveling mechanism of the crane and the crane to lift and transport port containers.

[0017] The present invention has the following beneficial effects: 1. In this invention, when the traveling unit moves along the track on the main beam, the limiting and locking wheel set is supported on the track by its rolling surface, providing lateral and vertical rolling limiting for the traveling unit. This improves the stability of the traveling unit's installation, connection, and movement on the track, preventing relative deviation of the traveling unit from the track due to wind force and track sway. This not only improves the stability and positioning accuracy of the traveling unit but also prevents it from overturning and falling off the track, thus enhancing the safety of the overhead crane. Specifically, by providing lateral limiting on both sides of the traveling unit's direction of travel, lateral deviation of the traveling unit from the track due to wind force or track sway can be prevented. By providing vertical limiting for the traveling unit located above the track, the traveling wheels of the traveling unit are kept in close contact with the track, preventing separation of the traveling wheels from the track, ensuring stable movement of the traveling wheels, and preventing the traveling unit from overturning and falling off the track.

[0018] 2. In this invention, when the walking unit is in a stopped state and statically rests on the track, the limiting locking wheel set can also be adjusted to enter a locked state. At this time, the limiting locking wheel set abuts its end face against the track, achieving surface contact with the track, so as to position and lock the walking unit on the track through the frictional resistance between the end face of the limiting locking wheel set and the track, thereby improving the stability of the walking unit when statically locked on the track and preventing the walking unit from sliding displacement on the track due to wind force and track shaking.

[0019] 3. In this invention, when the translation drive component drives the lower limit wheel to move closer to the track section for friction locking, the lifting drive component can also drive the lower limit wheel to move downward synchronously, so that the rolling limiting surface of the outer ring of the lower limit wheel is separated from the bottom surface of the track section's limiting frame. This not only prevents the rolling surface of the outer ring of the lower limit wheel from being damaged by friction with the limiting frame, but also reduces the frictional resistance when the lower limit wheel is translated, so that the end face of the lower limit wheel driven by the translation drive component can be tightly pressed against the side of the track section, and cooperate with the track section to perform friction locking on the traveling part.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

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

[0022] Figure 1 This is one of the three-dimensional structural schematic diagrams of the overhead crane traveling mechanism of the present invention; Figure 2 This is a top view of the overhead crane traveling mechanism of the present invention. Figure 3 This is the second three-dimensional structural schematic diagram of the overhead crane traveling mechanism of the present invention; Figure 4 For the present invention Figure 3 A magnified structural diagram at point A; Figure 5 This is a side view of the overhead crane traveling mechanism of the present invention; Figure 6 For the present invention Figure 5 A magnified structural diagram at point B; Figure 7 This is the third three-dimensional structural schematic diagram of the overhead crane traveling mechanism of the present invention; Figure 8 For the present invention Figure 7 A magnified structural diagram at point C; Figure 9 This is a schematic diagram of the adjustment structure of the lower limit wheel of the present invention between the limit state and the locked state; Figure 10 This is one of the three-dimensional structural schematic diagrams of the limiting and locking part of the present invention; Figure 11 This is a second three-dimensional structural schematic diagram of the limiting and locking part of the present invention; Figure 12 This is a schematic diagram of the mounting structure of the friction locking piece of the present invention; Figure 13 This is one of the exploded structural diagrams of the limiting and locking part of the present invention; Figure 14 This is the second exploded structural diagram of the limiting and locking part of the present invention; Figure 15 This is a three-dimensional structural diagram of the limiting guide plate of the present invention; Figure 16 This is a three-dimensional structural diagram of the positioning seat of the present invention.

[0023] In the diagram: 1. Main beam; 2. Traveling section; 21. Track section; 22. Trolley; 23. Auxiliary trolley; 24. Traveling wheel; 2101. Traveling frame; 2102. Limiting frame; 2103. Support frame; 2104. Reinforcing rib; 3. Limiting and locking section; 31. Mounting frame; 32. Side limiting wheel; 33. Lower limiting wheel; 34. Friction locking plate; 35. Roller frame; 36. Limiting guide plate; 37. Positioning seat 38. Guide pin; 39. Guide groove; 310. Telescopic drive component; 311. Connecting seat; 312. Positioning through hole; 313. Positioning rod; 314. Positioning nut; 315. Lifting guide shaft; 316. Connecting block; 317. Limiting slide groove; 318. Sliding mounting seat; 319. Buffer spring; 3901. Upper horizontal support groove; 3902. Guide inclined groove; 3903. Lower horizontal propulsion guide groove. Detailed Implementation

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0026] Example 1 Please see Figure 1 , Figure 2 As shown, this embodiment is a crane traveling mechanism, including a main beam 1 and a moving part 2. The moving part 2 includes a track part 21 and a traveling part. The traveling part can be adjusted back and forth between a traveling state and a braking state. When entering the traveling state, the traveling part can travel along the track part 21 on the main beam 1. When entering the braking state, the traveling part can also be statically stopped on the track part 21. Limiting and locking parts 3 are installed on both sides of the traveling part in the traveling direction. Each limiting and locking part 3 includes a limiting and locking wheel assembly. When the traveling part is in the traveling state, the limiting and locking wheel assembly can be rolled and supported on the track part 21 by its rolling surface, providing lateral and vertical rolling limiting function for the traveling part. When the traveling part is in the braking state, the limiting and locking wheel assembly can also abut its end face against the track part 21, so as to lock the traveling part on the track part 21 by the frictional resistance between the end face of the limiting and locking wheel assembly and the track part 21.

[0027] The traveling unit can move along the track 21 on the main beam 1 when it enters the traveling state. At this time, the limiting locking wheel set is supported on the track 21 by its rolling surface, providing lateral and vertical rolling limiting for the traveling unit. When the traveling unit enters the braking state, it is statically stationary on the track 21. At this time, the limiting locking wheel set abuts its end face against the track 21, so that the limiting locking wheel set achieves surface contact with the track 21, and the traveling unit is positioned and locked on the track 21 by the frictional resistance between the end face of the limiting locking wheel set and the track 21.

[0028] Lateral limiting on both sides of the traveling section prevents lateral deviation of the traveling section from the track due to wind or swaying of the track section 21. Vertical limiting on the traveling section above the track section 21 ensures that the traveling section remains in close contact with the track, preventing separation and maintaining stable movement. This also prevents the traveling section from tipping over and falling off the track section 21, improving the safety of the overhead crane. Furthermore, the frictional resistance between the wheel set end face and the track section 21 is used to lock the traveling section on the track section 21, improving its stability when statically locked. This prevents the traveling section from sliding on the track due to wind or swaying of the track section 21, thus affecting its positioning and conveying accuracy. The frictional locking of the wheel set end face also assists in braking the traveling section on the track section 21, improving its braking effect.

[0029] Example 2 Please see Figures 1-4 As shown, the difference between this embodiment and the above embodiment is that the traveling part includes a large trolley 22 and a small trolley 23. The top surfaces of the main beam 1 and the large trolley 22 are both fixedly mounted with a track 21. The large trolley 22 is mounted on the track 21 on the top surface of the main beam 1, and the small trolley 23 is mounted on the track 21 on the top surface of the large trolley 22. Both the large trolley 22 and the small trolley 23 are equipped with a traveling drive component that can travel along the track 21. Limit locking parts 3 are installed on both sides of the traveling direction of the large trolley 22 and the small trolley 23. The traveling drive component includes a traveling wheel 24 and a drive motor. The outer circumference of the traveling wheel 24 is rolled and supported on the top surface of the track 21. The drive motor is connected to the traveling wheel 24 through a drive shaft, and a crane brake is installed on the drive shaft.

[0030] The trolley 23 is equipped with an installation platform for installing suspended equipment such as cranes. When the overhead crane traveling mechanism is working, the traveling drive component on the main trolley 22 can drive the main trolley 22 to move along the track 21 on the main beam 1, and the traveling drive component on the trolley 23 can drive the trolley 23 to move along the track 21 on the main trolley 22, so that the trolley 23 can move arbitrarily within the range of the main beam 1. By installing limit locking parts 3 on both sides of the moving direction of the main trolley 22 and the trolley 23, the rolling limit and locking between the main trolley 22 and the trolley 23 and the corresponding track 21 can be realized respectively, so as to improve the stability of the main trolley 22 and the trolley 23 in the installation connection and travel on the track 21.

[0031] Example 3 Please see Figures 3-8 As shown, the difference between this embodiment and the above embodiment is that the track section 21 includes a support frame 2103, a limiting frame 2102, and a traveling frame 2101. The support frame 2103, the limiting frame 2102, and the traveling frame 2101 are connected sequentially from bottom to top to form a cross-shaped track structure. A plurality of reinforcing ribs 2104 are fixedly installed between the inner side of the support frame 2103 and the bottom surface of the limiting frame 2102 to improve the firmness of the track section 21. The limiting locking wheel assembly includes a mounting frame 31, on which a lateral limiting locking wheel and a vertical limiting locking wheel are mounted. The rolling surface of the lateral limiting locking wheel can roll against the side of the limiting frame 2102, and the rolling surface of the vertical limiting locking wheel can roll against the bottom surface of the limiting frame 2102.

[0032] When the trolley 22 or trolley 23 moves along the track section 21, the traveling wheels 24 are rolled and supported on the traveling frame 2101. When the traveling wheels 24 rotate under the drive of the drive motor, they can roll along the traveling frame 2101 to drive the trolley 22 or trolley 23 to move. At this time, the lateral limiting locking wheels at both ends of the trolley 22 or trolley 23 abut against the outer side of the limiting frame 2102 in the track section 21 on both sides. Thus, the lateral limiting locking wheels at both ends can limit the trolley 22 or trolley 23 in the forward direction on both sides, preventing the trolley 22 or trolley 23 from moving on the track. Lateral swaying and deviation occur on the track section 21; while the vertical limiting locking wheel rolls against the bottom surface of the limiting frame 2102, and can cooperate with the traveling wheel 24 to vertically roll and clamp the track section 21, thereby vertically rolling and limiting the large trolley 22 or small trolley 23, preventing the large trolley 22 or small trolley 23 from detaching from the track section 21, thereby improving the stability of the large trolley 22 or small trolley 23 installed on the track section 21, making it less likely to overturn and fall off the track section 21, and ensuring that the traveling wheel 24 is always in close contact with the top surface of the track section 21, thereby improving the traveling stability and traveling accuracy of the traveling wheel 24.

[0033] Example 4 Please see Figure 5 , Figure 6 , Figures 9-16 As shown, the difference between this embodiment and the above embodiment is that the lateral limiting locking wheel includes a lateral limiting wheel 32, which is rotatably mounted on the mounting frame 31 via a rotating shaft, and the outer ring of the lateral limiting wheel 32 rolls against the side of the limiting frame 2102. The vertical limit locking wheel includes a translation drive assembly and a lower limit wheel 33. The lower limit wheel 33 is mounted on the mounting frame 31 via the translation drive assembly, and the outer ring of the lower limit wheel 33 rolls against the bottom surface of the limit frame 2102. When the traveling part enters the braking state, the translation drive assembly can drive the lower limit wheel 33 to move closer to the track part 21 so that the end face of the lower limit wheel 33 is in close contact with the side of the support frame 2103. The translation drive assembly can also drive the lower limit wheel 33 to move away from the track part 21 when the traveling part enters the traveling state so that the end face of the lower limit wheel 33 is separated from the side of the support frame 2103.

[0034] When the walking unit is in the walking state, the outer ring of the side limiting wheel 32 rolls against the side of the limiting frame 2102, and the outer ring of the lower limiting wheel 33 rolls against the bottom surface of the limiting frame 2102. This causes the side limiting wheel 32 to roll and limit along the side of the limiting frame 2102, and the lower limiting wheel 33 to roll and limit along the bottom surface of the limiting frame 2102. Thus, the walking unit is limited in the lateral and vertical directions by the cooperation of the side limiting wheel 32 and the lower limiting wheel 33. When the walking unit enters the braking state, the translation drive component drives the lower limiting wheel 33 to move closer to the track 21, so that the end face of the lower limiting wheel 33 is in close contact with the side of the support frame 2103, so that the lower limiting wheel 33 and the support frame 2103 make surface contact. Thus, the walking unit is locked and positioned on the track 21 by the frictional resistance between the lower limiting wheel 33 and the support frame 2103.

[0035] Furthermore, the vertical limit locking wheel also includes a lifting drive assembly. The lifting drive assembly can drive the lower limit wheel 33 to move synchronously downward when the translation drive assembly drives the lower limit wheel 33 to move closer to the track section 21, so that the top of the outer ring of the lower limit wheel 33 is separated from the bottom surface of the limit frame 2102. The lifting drive assembly can also drive the lower limit wheel 33 to move synchronously upward to reset when the translation drive assembly drives the lower limit wheel 33 to move away from the track section 21, so that the outer ring of the lower limit wheel 33 abuts against the bottom surface of the limit frame 2102 again. When the translation drive unit drives the lower limit wheel 33 to move closer to the track section 21 for friction locking, the lifting drive assembly drives the lower limit wheel 33 to move downward synchronously, so that the rolling limiting surface of the outer ring of the lower limit wheel 33 separates from the bottom surface of the limiting frame 2102. This not only prevents the rolling surface of the outer ring of the lower limit wheel 33 from being damaged by friction with the limiting frame 2102, but also reduces the frictional resistance when the lower limit wheel 33 is translated, so that the end face of the lower limit wheel 33 can be driven by the translation drive assembly to closely abut against the side of the support frame 2103, and cooperate with the support frame 2103 to perform friction locking on the traveling part.

[0036] Furthermore, the lower limit wheel 33 is provided with multiple positioning through holes 312, and a friction positioning assembly is fixedly installed on the end face of the lower limit wheel 33 through the positioning through holes 312; the friction positioning assembly includes a friction locking piece 34, and a plurality of positioning rods 313 corresponding one-to-one with the positioning through holes 312 are provided on one side of the friction locking piece 34, and a positioning nut 314 can be rotatably installed at the end of the positioning rod 313 through an external thread; When installing the friction locking piece 34, insert the positioning rod 313 on one side into the positioning through hole 312 on the lower limit wheel 33, and then lock the positioning nut 314 onto the end of the positioning rod 313, thereby locking and fixing the friction locking piece 34 to the end of the lower limit wheel 33. By installing the friction locking piece 34 on the friction locking surface of the lower limit wheel 33, the friction locking force when the end face of the lower limit wheel 33 is in close contact with the side of the support frame 2103 can be improved, thereby improving the friction locking effect on the traveling part. At the same time, it can prevent the lower limit wheel 33 from being damaged by friction. The friction locking piece 34 can be quickly installed through the positioning rod 313 and the positioning nut 314. When the friction locking piece 34 is worn, it can be quickly disassembled and replaced with a new friction locking piece 34.

[0037] Furthermore, the translation drive assembly includes a positioning seat 37 and a telescopic drive component 310. The telescopic drive component 310 is fixedly mounted on the mounting frame 31. A connecting seat 311 that slides with the mounting frame 31 is fixedly mounted on the positioning seat 37, and the connecting seat 311 is fixedly connected to the telescopic end of the telescopic drive component 310. A roller frame 35 is also mounted on the positioning seat 37, and a lower limit wheel 33 is rotatably mounted on the roller frame 35. The telescopic drive component 310 can drive the connecting seat 311, the positioning seat 37, the roller frame 35, and the lower limit wheel 33 to move and telescopically adjust along the mounting frame 31. The lowering drive component includes a limiting guide plate 36, a guide pin 38, a lifting guide shaft 315, and a connecting block 316. The lifting guide shaft 315 is fixedly installed on the positioning seat 37. The connecting block 316 and the guide pin 38 are both fixedly installed on the roller frame 35. The connecting block 316 is slidably connected to the lifting guide shaft 315. The limiting guide plate 36 is fixedly installed on the mounting frame 31, and the limiting guide plate 36 is provided with a guide groove 39 that can slide and engage with the guide pin 38. When the guide pin 38 moves towards the track section 21, it moves downward synchronously under the limiting and guiding action of the guide groove 39. The telescopic drive component 310 is a hydraulic telescopic shaft. The top of the lower limit wheel 33 rolls against the bottom surface of the limit frame 2102 during the movement of the traveling part to limit the vertical rolling of the traveling part. When the traveling part stops, the telescopic drive component 310 drives the connecting seat 311 and the positioning seat 37 to move towards the support frame 2103. At this time, the positioning seat 37 drives the roller frame 35 and the lower limit wheel 33 to move closer to the support frame 2103. At the same time, the roller frame 35 drives the guide pin 38 to move synchronously. Under the limiting and guiding action of the guide groove 39, the guide pin 38 moves synchronously downward during the translation, thereby driving the roller frame 35 and the lower limit wheel 33 to move synchronously downward during the translation, so that the top of the lower limit wheel 33 separates from the bottom surface of the limit frame 2102, thereby preventing the lower limit wheel 33 from being damaged by friction with the limit frame 2102 during the translation.

[0038] Furthermore, the guide groove 39 includes an upper horizontal support groove 3901, a guide inclined groove 3902, and a lower horizontal propulsion guide groove 3903, which are connected sequentially from top to bottom. When the traveling part is in the traveling state, the guide pin 38 is slidably engaged with the upper horizontal support groove 3901. At this time, the bottom surface of the upper horizontal support groove 3901 provides stable support for the guide pin 38, thereby providing stable support for the roller frame 35 and the lower limit wheel 33, so as to improve the stability of the lower limit wheel 33 when it is rolling and limited. When the roller frame 35, the lower limit wheel 33, and the guide pin 38 move closer to the support frame 2103, The guide pin 38 moves into the guide groove 3902 and moves down synchronously during translation through the inclined guide groove 3902, so that the top surface of the lower limit wheel 33 is separated from the bottom surface of the limit frame 2102. Then the guide pin 38 moves into the lower horizontal propulsion guide groove 3903. The horizontal limit of the lower horizontal propulsion guide groove 3903 improves the stability of the horizontal propulsion of the roller frame 35, the lower limit wheel 33 and the guide pin 38, so that the end of the lower limit wheel 33 can stably and tightly abut against the side of the support frame 2103, thereby enabling the lower limit wheel 33 and the support frame 2103 to cooperate to frictionally lock the traveling part.

[0039] Furthermore, the positioning seat 37 is provided with a limiting groove 317, and a sliding mounting seat 318 is slidably installed in the limiting groove 317. A buffer spring 319 is installed at the end of the sliding mounting seat 318 away from the track part 21. The lifting guide shaft 315 is fixedly installed on the sliding mounting seat 318. When the end of the lower limiting wheel 33 initially collides with the side of the support frame 2103, the lower limiting wheel 33 and the roller frame 35 can drive the sliding mounting seat 318 to slide in the limiting groove 317 towards the buffer spring 319 under the contact of the side of the support frame 2103. The buffer spring 319 buffers the lower limiting wheel 33 and the roller frame 35 to prevent the lower limiting wheel 33 from rigidly colliding with the support frame 2103 and causing damage. Then, the telescopic drive 310 drives the positioning seat 37, the lower limiting wheel 33 and the roller frame 35 to continue moving until the end of the lower limiting wheel 33 is tightly against the side of the support frame 2103.

[0040] Example 5 This embodiment discloses a crane travel control method, which can control the crane travel mechanism through a control system to achieve stable crane operation. The specific steps are as follows: The control system can control the walking unit to adjust back and forth between walking and braking states; When the traveling unit enters the traveling state, it can travel and move along the track 21 on the main beam 1. At this time, the limiting and locking wheel set is supported on the track 21 by its rolling surface, providing lateral and vertical rolling limiting function for the traveling unit. When the traveling unit enters the braking state, it remains statically on the track 21, and at this time, the limit locking wheel set abuts its end face against the track 21, so as to lock the traveling unit on the track 21 by the frictional resistance between the end face of the limit locking wheel set and the track 21.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to the present invention.

Claims

1. A crane traveling mechanism, comprising a main beam and a moving part, characterized in that: The moving part includes a track part and a traveling part. The traveling part can be adjusted back and forth between a traveling state and a braking state. When entering the traveling state, the traveling part can travel along the track part on the main beam. When entering the braking state, the traveling part can also remain statically on the track part. Limiting and locking parts are installed on both sides of the walking part in the walking direction. Each limiting and locking part includes a limiting and locking wheel assembly. When the walking part is in the walking state, the limiting and locking wheel assembly can be rolled and supported on the track part by its rolling surface, providing lateral and vertical rolling limiting function for the walking part. When the walking part is in the braking state, the limiting and locking wheel assembly can also abut its end face against the track part, so as to position and lock the walking part on the track part by the frictional resistance between the end face of the limiting and locking wheel assembly and the track part.

2. The overhead crane traveling mechanism according to claim 1, characterized in that: The traveling unit includes a large trolley and a small trolley. The top surfaces of the main beam and the large trolley are both fixedly equipped with rails. The large trolley is mounted on the rails on the top surface of the main beam, and the small trolley is mounted on the rails on the top surface of the large trolley. Both the large trolley and the small trolley are equipped with traveling drive components that can travel along the rails. Limit locking parts are installed on both sides of the moving direction of the large trolley and the small trolley.

3. The overhead crane traveling mechanism according to claim 2, characterized in that: The traveling drive component includes a traveling wheel and a drive motor. The outer circumference of the traveling wheel is rolled and supported on the top surface of the track. The drive motor is connected to the traveling wheel via a drive shaft, and a crane brake is installed on the drive shaft.

4. The overhead crane traveling mechanism according to claim 1, characterized in that: The track section includes a support frame, a limiting frame, and a traveling frame, which are connected sequentially from bottom to top to form a cross-shaped track structure. Furthermore, multiple reinforcing ribs are fixedly installed between the inner side of the support frame and the bottom surface of the limiting frame.

5. The overhead crane traveling mechanism according to claim 4, characterized in that: The limiting locking wheel assembly includes a mounting frame, on which a lateral limiting locking wheel and a vertical limiting locking wheel are mounted. The rolling surface of the lateral limiting locking wheel can roll against the side of the limiting frame, and the rolling surface of the vertical limiting locking wheel can roll against the bottom surface of the limiting frame.

6. The overhead crane traveling mechanism according to claim 5, characterized in that: The lateral limiting locking wheel includes a side limiting wheel, which is rotatably mounted on the mounting frame via a rotating shaft, and the outer ring of the side limiting wheel rolls against the side of the limiting frame. The vertical limiting locking wheel includes a translation drive assembly and a lower limiting wheel. The lower limiting wheel is mounted on the mounting frame via the translation drive assembly, and the outer ring of the lower limiting wheel rolls against the bottom surface of the limiting frame. When the traveling part enters a braking state, the translation drive assembly can drive the lower limiting wheel to move closer to the track part, so that the end face of the lower limiting wheel is in close contact with the side of the support frame. The translation drive assembly can also drive the lower limiting wheel to move away from the track part when the traveling part enters a traveling state, so that the end face of the lower limiting wheel separates from the side of the support frame.

7. The overhead crane traveling mechanism according to claim 6, characterized in that: The vertical limiting locking wheel also includes a lifting drive assembly. The lifting drive assembly can drive the lower limiting wheel to move synchronously downward when the translation drive assembly drives the lower limiting wheel to move closer to the track, so that the top of the outer ring of the lower limiting wheel separates from the bottom surface of the limiting frame. The lifting drive assembly can also drive the lower limiting wheel to move synchronously upward to reset when the translation drive assembly drives the lower limiting wheel to move away from the track, so that the outer ring of the lower limiting wheel abuts against the bottom surface of the limiting frame again.

8. A crane traveling mechanism according to claim 6, characterized in that: The lower limit wheel is provided with multiple positioning through holes, and a friction positioning component is fixedly installed on the end face of the lower limit wheel through the positioning through holes; The friction positioning assembly includes a friction locking plate. One side of the friction locking plate is provided with a plurality of positioning rods that correspond one-to-one with the positioning through holes. The end of the positioning rod can be rotatably fitted with a positioning nut via an external thread.

9. A crane traveling mechanism according to claim 7, characterized in that: The translation drive assembly includes a positioning seat and a telescopic drive component. The telescopic drive component is fixedly installed on the mounting frame. A connecting seat that slides with the mounting frame is fixedly installed on the positioning seat, and the connecting seat is fixedly connected to the telescopic end of the telescopic drive component. A roller frame is also installed on the positioning seat, and the lower limit wheel is rotatably installed on the roller frame. The telescopic drive component can drive the connecting seat, positioning seat, roller frame, and lower limit wheel to move and telescopically adjust along the mounting frame. The lifting drive component includes a limiting guide plate, a guide pin, a lifting guide shaft, and a connecting block. The lifting guide shaft is fixedly installed on the positioning seat. The connecting block and the guide pin are both fixedly installed on the roller frame. The connecting block is slidably connected to the lifting guide shaft. The limiting guide plate is fixedly installed on the mounting frame, and the limiting guide plate is provided with a guide groove that can slide and engage with the guide pin. When the guide pin moves towards the track, it moves downward synchronously under the limiting and guiding action of the guide groove. The guide groove includes an upper horizontal support groove, a guide inclined groove, and a lower horizontal propulsion guide groove, which are connected in sequence from top to bottom.

10. A crane travel control method, using the crane travel mechanism as described in any one of claims 1-9, and further using a control system connected to the crane travel mechanism, characterized in that, The specific steps are as follows: The control system can control the walking unit to adjust back and forth between walking and braking states; When the traveling unit enters the traveling state, it can travel and move along the track on the main beam. At this time, the limiting and locking wheel set is supported on the track by its rolling surface, providing lateral and vertical rolling limiting function for the traveling unit. When the traveling unit enters the braking state, it remains statically on the track, and at this time, the limit locking wheel set abuts its end face against the track, so as to lock the traveling unit on the track by the frictional resistance between the end face of the limit locking wheel set and the track.

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