A remote control type container crane

Abstract

The application discloses a remote control type container crane and belongs to the technical field of hoisting devices. The container crane comprises a beam frame, a trolley mechanism sliding on the beam frame and a lifting plate hoisted by a sling. The sling is located at the two sides of the trolley mechanism, and the end of the sling away from the trolley mechanism is connected with a lifting appliance. The meshing of the rack and the spur gear can drive the rotating shaft to rotate, thereby the meshing of the driving bevel gear and the driven bevel gear can drive the adjusting rod to rotate, which is beneficial to adjusting the position of the adjusting rod relative to the connecting cylinder, so that the lifting appliances on the two sides can be simultaneously sleeved outside the lifting rod. When the lifting appliance is sleeved outside the lifting rod, the guide block is located at the flared portion, so that the sling can drive the one end of the steering rod to be upwardly raised during the winding process of the sling, which is beneficial to the sling to carry the adjusting assembly to the vertical direction and hoist the container, thereby avoiding the inclination of the container when the container is hoisted.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, and in particular to a remotely controlled container crane. Background Technology

[0002] In freight hubs such as ports and logistics parks, container cranes are the core equipment for achieving efficient container transfer. Their operational efficiency and safety directly affect the speed of global supply chain flow. With the development of automation and intelligent technologies, remote-controlled container cranes are gradually becoming the mainstream development direction in the industry due to their advantages such as reducing on-site manual intervention, adapting to harsh working environments, and improving operational continuity.

[0003] Chinese patent CN221700939U discloses a lifting mechanism for a rail-mounted container crane. By fixing a lifting pulley at the telescopic end of two lifting drive components, and having two sets of movable pulleys on each lifting pulley, with the two sets of movable pulleys located on the other side of the front and rear lifting cables respectively, the lifting effect is not only better, but the lifting is also faster.

[0004] The aforementioned device uses two symmetrically arranged sets of lifting cables to pull the container crane, thereby lifting the container. However, in actual use, when the lengths of the lifting cables on both sides are different, the container may tilt when it is lifted. On the one hand, this is not conducive to the stable transportation of the container, and on the other hand, it also poses certain safety hazards. In summary, the aforementioned device still has room for improvement.

[0005] Therefore, it is necessary to provide a remotely operated container crane to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a remotely controlled container crane to solve the problem mentioned in the background art that the existing device uses two sets of symmetrically arranged lifting cables to pull the container crane to lift the container. However, in actual use, when the lengths of the lifting cables on both sides are different, the container will tilt when it is lifted.

[0007] Based on the above ideas, the present invention provides the following technical solution: a remotely controlled container crane, including a beam frame and a trolley mechanism sliding on the beam frame. The trolley mechanism suspends a lifting plate via slings. The slings are located on both sides of the trolley mechanism. The end of the sling away from the trolley mechanism is connected to a spreader. The top two sides of the lifting plate are equipped with booms that cooperate with the spreader. An adjustment component is provided between the slings and the spreader. Racks that cooperate with the adjustment component are fixedly provided on both sides of the top of the lifting plate. When the slings pull the spreader horizontally through the adjustment component and the adjustment component cooperates with the racks, the length of the adjustment component can be adjusted so that the lifting plate can be in a horizontal state after the spreader on both sides cooperates with the booms.

[0008] As a further aspect of the present invention: the adjusting assembly includes a telescopic unit connected between the sling and the lifting device. The telescopic unit includes a connecting cylinder fixedly connected to the sling and an adjusting rod movably engaged with the lifting device. The end of the adjusting rod away from the lifting device extends into the connecting cylinder and is threadedly engaged with the connecting cylinder. A square tube is fixedly sleeved on the outside of the connecting cylinder, and a rotating shaft is installed on the square tube. A driving bevel gear is fixedly installed at one end of the rotating shaft extending into the square tube. A driven bevel gear that meshes with the driving bevel gear is sleeved on the outside of the adjusting rod. A spur gear is connected to the outside of the rotating shaft through a one-way bearing. When the adjusting assembly slides on the top of the lifting plate, the spur gear can mesh with the rack.

[0009] As a further embodiment of the present invention: a steering rod is installed on both sides of the top of the hanging plate, and a guide groove is opened on the top of the hanging plate. A guide block that slides with the guide groove is fixedly provided at the bottom of the square tube. Both ends of the guide groove are set as flared portions, so that the guide block can be led out from the flared portions.

[0010] As a further aspect of the present invention: the steering rod is hinged to the base at the top of the hanging plate, and a telescopic member is provided between one end of the steering rod and the hanging plate. When the guide block moves to the flared part and the sling continues to wind up, the sling can cause the steering rod to overcome the pressure of the telescopic member and deflect upward.

[0011] As a further aspect of the present invention, both the guide block and the guide groove have a T-shaped cross-section.

[0012] As a further aspect of the present invention: magnets are fixedly provided on the outer side of the lifting device, and the opposing sides of the magnets on the cooperating lifting devices have different magnetic poles. When the lifting device is placed horizontally so that the lifting devices on both sides of the lifting plate are in contact at the center line of the lifting plate, the attraction between the magnets enables the two lifting devices to be stably in contact.

[0013] As a further embodiment of the present invention: a collar is fixedly connected inside the driven bevel gear, the collar is sleeved on the outside of the adjusting rod, and a protrusion is fixedly provided on the inner wall of the collar, and a strip groove is opened on the outer circumferential surface of the adjusting rod to slide with the protrusion.

[0014] As a further aspect of the present invention: a support plate is fixedly installed inside the square tube, and the collar extends outward from the side near the support plate to form an annular connecting part, which is rotatably engaged with the support plate through a bearing.

[0015] As a further aspect of the present invention: a connector is fixedly provided on the lifting device, and a retaining ring is fixedly provided on the side of the connector near the adjusting rod, and the end of the adjusting rod located inside the retaining ring forms a protruding ring portion.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the meshing of the rack and spur gear can drive the rotating shaft to rotate, and the meshing of the driving bevel gear and the driven bevel gear can drive the adjusting rod to rotate, which is beneficial to adjusting the position of the adjusting rod relative to the connecting cylinder, so that the spreaders on both sides can be simultaneously fitted onto the outside of the lifting rod. When the spreaders are fitted onto the outside of the lifting rod, the guide block is at the flared part, which allows the sling to be wound up so that one end of the steering rod can be tilted upwards, which is beneficial to the sling bringing the adjusting component to the vertical direction and lifting the container, thereby avoiding the container tilting when it is lifted. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the adjustment component of the present invention in a vertical state;

[0020] Figure 3 This is a schematic diagram of the two lifting devices of the present invention fitting together at the center line of the lifting plate;

[0021] Figure 4 This is a schematic diagram of the lifting device of the present invention located outside the lifting rod;

[0022] Figure 5 This is a cross-sectional view of the adjustment component of the present invention;

[0023] Figure 6 This is a schematic diagram of the magnet structure of the present invention;

[0024] Figure 7 This is the present invention. Figure 5 A magnified structural diagram at point A;

[0025] Figure 8This is a schematic diagram of the bump structure of the present invention.

[0026] In the diagram: 1. Beam frame; 2. Trolley mechanism; 3. Drum; 4. Sling; 5. Hanging plate; 501. Guide groove; 5011. Flared end; 6. Lock head; 7. Lifting rod; 8. Column; 9. Steering rod; 901. Protrusion; 10. Telescopic component; 11. Guide block; 1101. Protrusion; 12. Spur gear; 13. Stop bar; 14. Square tube; 15. Connecting cylinder; 16. Snap ring; 17. Connector; 18. Lifting device; 19. Rack; 20. Rotating shaft; 21. Adjusting rod; 2101. Strip groove; 2102. Protruding ring; 22. Magnet; 23. Support plate; 24. Driven bevel gear; 25. Collar; 2501. Protruding strip; 2502. Connecting part; 26. Driving bevel gear. Detailed Implementation

[0027] like Figures 1-8 As shown, a remotely operated container crane includes a beam frame 1 and a trolley mechanism 2 that slides on the beam frame 1. The trolley mechanism 2 can travel along the length of the beam frame 1. The trolley mechanism 2 is equipped with a lifting plate 5 via slings 4, which are distributed on both sides of the trolley mechanism 2. The lifting plate 5 is used for lifting containers. (Refer to...) Figures 1-2 As shown, the end of the sling 4 away from the trolley mechanism 2 is connected to the spreader 18, and the top two sides of the lifting plate 5 are fixedly connected to the lifting rod 7 through the base. Through the cooperation of the spreader 18 and the lifting rod 7, the sling 4 can lift the container upward during the winding process, which is beneficial to the transportation of the container.

[0028] In actual use, when the cargo inside the container is unevenly distributed, the weight at both ends of the container will be different, resulting in uneven stress on the slings 4 on both sides of the trolley mechanism 2. Over time, the slings 4 on both sides of the trolley mechanism 2 may become of different lengths. Therefore, this solution includes an adjustment component between the slings 4 and the spreader 18. Racks 19 that cooperate with the adjustment component are fixedly installed on both sides of the top of the lifting plate 5. When adjustment of the slings 4 on both sides of the trolley mechanism 2 is required, the spreader 18 can be placed horizontally so that the spreaders 18 on both sides of the lifting plate 5 are aligned at the center line of the lifting plate 5. See [reference needed] for details. Figure 3 As shown, at this time, as the slings 4 on both sides of the trolley mechanism 2 are gradually wound up, the shorter sling 4 will pull the spreader 18 to move first. When both slings 4 on both sides are taut, the two spreaders 18 that are close to each other can separate. As the longer sling 4 pulls the spreader 18 to move horizontally, the adjustment component on the spreader 18 can cooperate with the rack 19, thereby shortening the length of the adjustment component. This allows the spreaders 18 on both sides to cooperate with the boom 7, so that the lifting plate 5 can be in a horizontal state, thereby preventing the lifted container from tilting.

[0029] The adjustment assembly includes a telescopic unit connected between the sling 4 and the lifting device 18. Specifically, the telescopic unit includes a connecting cylinder 15 fixedly connected to the sling 4 and an adjusting rod 21 connected to the lifting device 18. Specifically, one end of the adjusting rod 21 away from the lifting device 18 extends into the connecting cylinder 15 and is threadedly connected to it.

[0030] Furthermore, a connector 17 is fixedly provided on the lifting device 18, and a retaining ring 16 is fixedly provided on the side of the connector 17 near the adjusting rod 21. The end of the adjusting rod 21 located inside the retaining ring 16 extends outward to form a protruding ring portion 2102, so that the adjusting rod 21 has a T-shaped structure as a whole, while the inner wall of the retaining ring 16 is stepped, so that the end of the adjusting rod 21 away from the connecting cylinder 15 can be stably placed inside the retaining ring 16 and will not detach from the retaining ring 16.

[0031] A square tube 14 is fixedly sleeved on the outer side of the connecting cylinder 15. A rotating shaft 20 is provided at the top of the square tube 14. The rotating shaft 20 passes through the square tube 14 and is rotatably connected to it through a bearing. A driving bevel gear 26 is fixedly provided at one end of the rotating shaft 20 extending into the square tube 14. A driven bevel gear 24 that meshes with the driving bevel gear 26 is sleeved on the outer side of the adjusting rod 21. The driven bevel gear 24 can drive the adjusting rod 21 to rotate synchronously and can move relative to the adjusting rod 21 along its axial direction. A spur gear 12 is connected to the outer side of the rotating shaft 20 through a one-way bearing, so that when the adjusting assembly slides on the top of the hanging plate 5, the spur gear 12 can mesh with the rack 19.

[0032] Reference Figures 2-5 As shown, steering rods 9 are installed on both sides of the top of the hanging plate 5, and a guide groove 501 is provided on the top of the hanging plate 5. A guide block 11 is fixedly provided at the bottom of the square tube 14, which slides with the guide groove 501. Both ends of the guide groove 501 are set as flared portions 5011, so that the guide block 11 can be led out from the flared portion 5011. Specifically, when the sling 4 is in the state of passing under the steering rod 9, the lifting device 18 can be pulled outward at the top of the hanging plate 5 by the adjustment component during the winding of the sling 4. When the guide block 11 moves along the guide groove 501 to the flared portion 5011, the lifting device 18 is outside the lifting rod 7 and the end of the adjustment component away from the lifting device 18 can be lifted upward. Therefore, during the winding of the sling 4, the sling 4 can drive one end of the steering rod 9 to tilt upward and eventually disengage from the steering rod 9, so that the adjustment component can be in such a position as Figure 2 The vertical configuration shown facilitates the lifting of the lifting platform 5 and the container.

[0033] Working principle: Under normal use, the lifting device 18 is in the position as follows: Figure 2In the state shown, during the unwinding of the sling 4, the lifting plate 5 can move downwards, so that the locks 6 at the four corners of the bottom of the lifting plate 5 lock with the corner fittings at the four corners of the top of the container, so that the container can be lifted upwards through the lifting plate 5 during the winding of the sling 4.

[0034] When it is found that the slings 4 on both sides of the trolley mechanism 2 are of different lengths, causing the lifted container to tilt, the tilting of the container can be avoided by changing the length of the adjusting component. Specifically, the slings 4 can be routed under the steering rod 9, and the spreaders 18 on both sides can be aligned with the center line of the lifting plate 5. At this time, during the winding of the slings 4, the shorter sling 4 will pull the spreader 18 first. For ease of understanding, this is referred to as... Figure 3 Let's take the shorter sling 4 on the right side as an example:

[0035] As the slings 4 on both sides gradually wind up, and the sling 4 on the right side is shorter, the sling 4 on the right side will pull the two lifting devices 18 that are in contact with each other to move to the right in sync. At this time, the spur gear 12 on the right-side adjusting assembly moves away from the rack 19, while the spur gear 12 on the left-side adjusting assembly meshes with the rack 19 on one side. However, since the spur gear 12 is connected to the rotating shaft 20 through a one-way bearing, the spur gear 12 is in a state of rotation during this process. When both slings 4 are in a taut state, as the slings 4 continue to wind up, the two lifting devices that are in contact with each other move to the right. 18 is separated, and as the left-side lifting device 18 is pulled outward, the meshing of the rack 19 and spur gear 12 drives the rotating shaft 20 to rotate. This, in turn, through the meshing of the driving bevel gear 26 and driven bevel gear 24, drives the adjusting rod 21 to rotate. Since the adjusting rod 21 is threadedly connected to the connecting cylinder 15, its rotation relative to the connecting cylinder 15 allows it to move inward, thus moving the lifting device 18 closer to the connecting cylinder 15. This facilitates the simultaneous placement of both lifting devices 18 around the outside of the lifting rod 7. (See reference for details.) Figure 4 As shown in the description above, when the spreader 18 is fitted on the outside of the boom 7, the guide block 11 is located at the flared part 5011, which allows the sling 4 to be wound up so that one end of the steering rod 9 can be tilted upwards. This is beneficial for the sling 4 to bring the adjustment component to the vertical direction and lift the container. At this point, the adjustment of the sling 4 is completed, so that the lengths of the two lifting components (the total length of the sling 4 and the adjustment component) are consistent, thereby avoiding the container from tilting when it is lifted.

[0036] During actual installation, the tooth ratio of the driving bevel gear 26 to the driven bevel gear 24 can be selected according to the following rules. Specifically, if the spur gear 12 moves a distance L relative to the rack 19 and rotates one revolution, the rotating shaft 20 will be driven by the spur gear 12 to rotate one revolution. During the process of the driving bevel gear 26 rotating one revolution and driving the driven bevel gear 24 to rotate n revolutions, the adjusting rod 21 needs to move a distance of 2L relative to the connecting cylinder 15 through the threaded engagement with the connecting cylinder 15. In this way, it is beneficial to adjust the length of the hoisting parts (the total length of the hoisting cable 4 and the adjusting assembly) on both sides to be consistent.

[0037] In summary, this device, through its adjustable components, can adjust the length of the lifting components (the total length of the sling 4 and the adjustable components) on both sides of the trolley, thereby preventing the container from tilting when it is lifted.

[0038] like Figures 1-8 As shown, the trolley mechanism 2 is equipped with two drums 3, and the slings 4 on both sides are respectively wound and fixed on the corresponding drums 3. Specifically, the trolley mechanism 2 is equipped with a motor, and the output end of the motor is connected to one of the drums 3. Both drums 3 are fixedly fitted with mutually meshing transmission gears, so that the two drums 3 can rotate relative to each other, which is beneficial for the synchronous winding and unwinding of the slings 4 on both sides.

[0039] The corner fittings connected to the container are provided with oval-shaped locking holes (for the lock head 6 to be inserted). The lock head 6 is rotated by electric or hydraulic drive. Since this is a mature technology in hoisting equipment, it will not be described in detail here.

[0040] Reference Figures 2-5 As shown, a protrusion 901 is fixedly provided on the outer circumference of the steering rod 9 at the bottom position, and a base is fixedly provided on the top of the hanging plate 5, so that the protrusion 901 is hinged to the base through a pin. A column 8 is provided at one end of the steering rod 9, so that one end of the steering rod 9 overlaps the top of the column 8. Of course, for stability, an arc-shaped groove that matches the steering rod 9 can be provided on the top of the column 8. A telescopic member 10 is provided between the end of the steering rod 9 away from the column 8 and the hanging plate 5. The aforementioned base is located between the column 8 and the telescopic member 10. As a first embodiment of the telescopic member 10, the telescopic member 10 can be a limiting spring. The limiting spring is connected between the steering rod 9 and the hanging plate 5. When the guide block 11 moves to the flared part 5011 and the sling 4 is continuously wound, the pressure of the sling 4 on the steering rod 9 can cause the steering rod 9 to overcome the pressure of the limiting spring and deflect upward, so that the sling 4 can disengage from the steering rod 9.

[0041] As a second embodiment of the telescopic component 10, a hydraulic rod can be connected between the end of the hanging plate 5 and the steering rod 9 away from the column 8. When the guide block 11 moves to the flared part 5011, the worker drives the hydraulic rod to work, so that the hydraulic rod drives the steering rod 9 to deflect, which is conducive to the detachment of the sling 4 from the steering rod 9.

[0042] Reference Figure 2 As shown, the lifting device 18 can be a hook, and a stop bar 13 is hinged to the hook. The stop bar 13 and the hook are elastically matched. When the hook is sleeved on the outside of the lifting rod 7, the stop bar 13 can be on the outside of the lifting rod 7, thereby preventing the hook from detaching from the lifting rod 7.

[0043] Reference Figure 5 As shown, both the guide block 11 and the guide groove 501 have a T-shaped cross-section; refer to Figure 6 As shown, magnets 22 are fixedly installed on the outer surface of the lifting device 18, and the opposing sides of the magnets 22 on the cooperating lifting devices 18 have different magnetic poles. When the lifting device 18 is placed horizontally so that the lifting devices 18 on both sides of the lifting plate 5 are attached at the center line of the lifting plate 5, the attraction between the magnets 22 makes the two lifting devices 18 stably attached together. Figures 4-5 , Figure 8 As shown, in actual use, a protrusion 1101 can be elastically connected to the side of the guide block 11 by a spring. The end of the protrusion 1101 located outside the guide block 11 has a spherical structure, while the inner wall of the guide groove 501 has a groove that matches the protrusion 1101. When the lifting devices 18 are in contact at the center line of the lifting plate 5, the end of the protrusion 1101 away from the guide block 11 can be inserted into the groove, so that the two lifting devices 18 that are in contact with each other can remain stable relative to the lifting plate 5. When one of the slings 4 is taut first, this sling 4 can pull the two lifting devices 18 that are in contact with each other to move synchronously.

[0044] A collar 25 is fixedly connected inside the driven bevel gear 24. The collar 25 is sleeved on the outside of the adjusting rod 21, and a protrusion 2501 is fixedly provided on the inner wall of the collar 25. A strip groove 2101 is opened on the outer circumference of the adjusting rod 21 to slide with the protrusion 2501, so that the collar 25 can drive the adjusting rod 21 to rotate and can move relative to the adjusting rod 21 along its axis. A support plate 23 is fixedly provided inside the square tube 14. The side of the collar 25 near the support plate 23 extends outward to form an annular connecting part 2502. A mounting hole is provided at the center of the support plate 23, so that the connecting part 2502 is inserted into the mounting hole and rotates with the support plate 23 through a bearing.

[0045] In actual use, the crane is also equipped with high-definition cameras, lidar, position sensors (such as GPS and encoders), force sensors, etc., to collect data on the surrounding environment (such as container position, ship or truck status) and equipment operating parameters (such as spreader height and load weight) in real time. The remote communication and transmission system transmits the on-site video images and sensor data to the remote control room in real time, and at the same time transmits the operator's instructions back to the equipment actuator, so that the staff does not need to operate on-site.

[0046] The above-disclosed examples are merely preferred embodiments of this application, intended to facilitate understanding and implementation by those skilled in the art. However, they cannot be used to limit the scope of this application. Therefore, equivalent variations made within the scope of this application are still within the scope of this application.

Claims

1. A remote control container crane, comprising a beam frame and a trolley mechanism sliding on the beam frame, the trolley mechanism is hoisted with a lifting plate through a sling, the sling is located at both sides of the trolley mechanism, one end of the sling away from the trolley mechanism is connected with a lifting tool, and both sides of the top of the lifting plate are installed with a lifting rod matched with the lifting tool, characterized in that: The adjusting assembly is arranged between the sling and the lifting tool, and the top of the lifting plate is fixedly provided with a rack matched with the adjusting assembly. ​ The adjusting assembly comprises a telescopic unit connected between the sling and the lifting tool, the telescopic unit comprises a connecting barrel fixedly connected with the sling and an adjusting rod movably connected with the lifting tool, one end of the adjusting rod away from the lifting tool extends into the connecting barrel and is threadedly engaged with the connecting barrel, a square tube is fixedly arranged outside the connecting barrel, a rotating shaft is arranged on the square tube, one end of the rotating shaft extending into the square tube is fixedly provided with a driving bevel gear, a driven bevel gear engaged with the driving bevel gear is arranged outside the adjusting rod, and a straight gear is connected to the rotating shaft through a one-way bearing. The top of the lifting plate is provided with a guide rod, and the top of the lifting plate is provided with a guide groove. The guide rod is hingedly connected to the base of the top of the lifting plate, and a telescopic member is arranged between one end of the guide rod and the lifting plate.

2. A tele-manipulated container crane according to claim 1, characterized in that: The guide block and the guide groove are both T-shaped in cross section.

3. A tele-manipulated container crane according to claim 1, characterized in that: The outer side of the lifting tool is fixedly provided with a magnet, and the opposite side of the magnet on the mutually matched lifting tool has different magnetic poles.

4. A tele-manipulated container crane according to claim 1, characterized in that: The inner part of the driven bevel gear is fixedly connected with a sleeve ring, the sleeve ring is arranged outside the adjusting rod, and the inner wall of the sleeve ring is fixedly provided with a convex strip.

5. A tele-manipulated container crane according to claim 4, characterized in that: The square tube is fixedly provided with a support plate, the side of the sleeve ring close to the support plate extends outward to form a ring-shaped connecting part, and the connecting part is rotatably matched with the support plate through a bearing.

6. A tele-manipulated container crane according to claim 1, characterized in that: The lifting tool is fixedly provided with a connecting head, and the side of the connecting head close to the adjusting rod is fixedly provided with a snap ring. The end of the adjusting rod inside the snap ring is formed into a convex ring part.

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