Container straddle carrier

Abstract

The utility model relates to a container straddle carrier which comprises a top frame connected to a bottom frame in a sliding mode in the height direction and a grabbing structure located in the top frame and moving in the height direction. The pull rope sequentially bypasses a sliding wheel transversely connected to the cross beam in a sliding mode, a guide wheel set arranged on the top frame, a hanging wheel located at the grabbing structure hanging point position and a third guide wheel arranged on the top frame and then is connected with the top frame, and the guide wheel and the head fixing point position are located on the same side of the sliding wheel. And a driving device for driving the sliding wheels to slide is also arranged on the top frame. When the grabbing mechanism is used, the distance between the hanging wheels and the top frame can be adjusted by adjusting the positions of the sliding wheels in the transverse direction, so that the height of the grabbing structure is adjusted, the height of the grabbing structure is further adjusted by adjusting sliding of the top frame on the bottom frame; meanwhile, the pull rope and the pulley are used, use of the cylinder body is reduced, and reliability is improved.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and more particularly to the field of mechanical component technology, specifically referring to container straddle carriers. Background Technology

[0002] Container straddle carriers are the mainstay of container handling equipment, typically handling horizontal transport from the quayhead to the yard, as well as container stacking in the yard. Due to their mobility, efficiency, stability, and low wheel pressure, container straddle carriers are widely used, and their operation significantly improves the loading and unloading efficiency of quayhead equipment.

[0003] Currently, existing straddle carriers are equipped with gripping structures that hold containers in place. When lifting or lowering the gripping structure, cylinders are used for lifting and lowering, such as the container straddle carrier with application number CN202310820134.7. Although this method solves the problem of containers easily becoming detached during transshipment, this solution has many cylinders and poor reliability. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a container straddle carrier that uses ropes and pulleys to reduce the amount of cylinder used and improve reliability.

[0005] This utility model is achieved through the following technical solution: a container straddle carrier, including a base frame, a top frame slidably connected to the base frame along the height direction, and a gripping structure located inside the top frame and movable along the height direction. The top frame is provided with pull ropes that can be detachably connected to the top frame at both ends and are arranged in accordance with the number of lifting points of the gripping structure. The pull ropes pass sequentially from the first fixed point around a sliding wheel slidably connected to a crossbeam, a guide wheel assembly set on the top frame, a lifting wheel located at the lifting point of the gripping structure, a third guide wheel set on the top frame, and then connect to the top frame. The guide wheel and the first fixed point are located on the same side of the sliding wheel. The top frame is also provided with a driving device for driving the sliding wheel to slide.

[0006] In use, one end of the pull rope is fixed to the top frame. Then, it passes under the sliding wheel along the sliding direction of the sliding wheel, exits from above the sliding wheel, extends in the opposite direction, passes over the pulley block, extends downwards to pass over the hanging wheel, and extends upwards to pass over the third guide wheel before being fixed to the top frame. In use, by adjusting the lateral position of the sliding wheel, the distance between the hanging wheel and the top frame can be adjusted, thereby adjusting the height of the gripping structure. At the same time, by adjusting the sliding of the top frame on the base frame, the height of the gripping structure can be further adjusted. The use of both the pull rope and the pulley reduces the amount of cylinder material used and improves reliability.

[0007] Preferably, each crossbeam of the top frame has two sliding wheels slidably connected to it, and the two sliding wheels are axled on the same slide block. The driving device is correspondingly set to the slide block and drives the slide block to slide. The gripping structure has four lifting points arranged in a rectangle. Two pull ropes that pass around the two sliding wheels on the same slide block pass around the two lifting points arranged longitudinally.

[0008] This preferred solution ensures that the two longitudinally arranged lifting points correspond to one sliding block, thereby reducing the number of cylinders used and minimizing bending of the gripping structure caused by a large number of cylinders and poor synchronization, which would affect the reliability of the gripping structure.

[0009] Preferably, the drive device includes a horizontally extending hydraulic cylinder, with two hydraulic cylinders located on two crossbeams arranged symmetrically at their centers. The head fixing points of two pull ropes corresponding to the same hydraulic cylinder are located at the corners of the top frame, and the two head fixing points are arranged along the diagonal direction of the top frame.

[0010] This preferred solution uses hydraulic cylinders to facilitate the lateral movement of the sliding wheels, and the symmetrical arrangement of the two hydraulic cylinders at the center facilitates the layout of other structures and wiring.

[0011] Preferably, the guide wheel assembly includes a first guide wheel whose axis extends along the height direction, a second guide wheel whose axis extends laterally and whose top surface is adapted to the height of the first guide wheel, the second guide wheel being located directly above the hanging wheel, the second guide wheel and the third guide wheel being located on both sides of the hanging wheel, and the axis of the hanging wheel extending longitudinally.

[0012] This preferred solution guides the direction of the pull rope by setting up the first guide wheel, the second guide wheel, and the third guide wheel, thereby allowing the pull rope to bypass the hanging wheel and thus connecting the top frame and the grabbing structure.

[0013] Preferably, two lifting wheels are provided at the same lifting point, arranged laterally, and located directly below the second and third guide wheels, respectively. This preferred arrangement, with the two lifting wheels, allows the rope to extend vertically downwards.

[0014] Preferably, the chassis has two wheels on one horizontal plate and one wheel on the other horizontal plate, and a driver's cab connected to the chassis is provided between the two wheels on the same horizontal plate.

[0015] This preferred design uses three wheels to support the top and bottom frames, and the cab facilitates driving the straddle carrier.

[0016] Preferably, the top frame is also provided with reinforcing ribs connecting the two vertical beams. This preferred embodiment, by providing reinforcing ribs, facilitates the enhancement of the top frame's support strength.

[0017] The beneficial effects of this utility model are as follows: One end of the pull rope is fixed to the top frame, then it passes over the sliding wheel from below along the sliding wheel's sliding direction, exits from above the sliding wheel, extends in the opposite direction around the pulley group, extends downward around the hanging wheel, and extends upward around the third guide wheel before being fixed to the top frame. In use, by adjusting the position of the sliding wheel in the lateral direction, the distance between the hanging wheel and the top frame can be adjusted, thereby adjusting the height of the gripping structure. At the same time, by adjusting the sliding of the top frame on the base frame, the height of the gripping structure can be further adjusted. The use of pull rope and pulley reduces the use of cylinders and improves reliability. By having two longitudinally arranged lifting points corresponding to one sliding block, the two corners of the longitudinally arranged gripping structure are ensured to rise and fall synchronously, thereby reducing the use of cylinders and reducing the bending of the gripping structure caused by a large number of cylinders and poor synchronization, which would affect the reliability of the gripping structure. Attached Figure Description

[0018] Figure 1 This is a front view of the structure of this utility model;

[0019] Figure 2 This is a rear view of the structure of this utility model;

[0020] Figure 3 This is a side view of the structure of this utility model;

[0021] Figure 4 This is a top view of the structure of this utility model;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 for Figure 4 Enlarged view at point B in the middle;

[0024] Figure 7 for Figure 5 A simplified front view of the first guide wheel, the second guide wheel, and the hanging wheel;

[0025] Figure 8 for Figure 6 A simplified front view of the first guide wheel, the second guide wheel, and the hanging wheel;

[0026] As shown in the figure:

[0027] 1. First guide wheel, 2. Second guide wheel, 3. Third guide wheel, 4. Slide tube, 5. Slide column, 6. Hydraulic cylinder, 7. Hanging wheel, 8. Head fixed point, 9. Drive device, 10. Slide seat, 11. Sliding wheel, 12. Driver's cab, 13. Traveling wheel, 14. Base frame, 15. Top frame, 16. Crossbeam, 17. Longitudinal beam, 18. Tail fixed point, 19. Grabbing structure, 20. Pull rope. Detailed Implementation

[0028] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0029] See attached document Figure 1-8 This utility model discloses a container straddle carrier, comprising a base frame 14 and a top frame 15. The base frame 14 includes a rectangular base frame composed of horizontal and vertical plates. Two wheels 13 are provided on one horizontal plate and one wheel 13 is provided on the other horizontal plate. A driver's cab 12 connected to the base frame 14 is also provided between the two wheels 13 on the same horizontal plate. An upwardly extending slide tube 4 is provided at the corner of the frame.

[0030] The top frame 15 includes a transversely extending crossbeam 16 and a longitudinally extending longitudinal beam 17. The crossbeam 16 and the longitudinal beam 17 form a rectangular top frame. At the corner of the top frame, there is a sliding column 5 that corresponds to the sliding tube 4 and is slidably connected to the sliding tube 4. A hydraulic cylinder 6 is hinged on the sliding column 5. The extended end of the hydraulic cylinder 6 is hinged to the sliding tube 4. The hydraulic cylinder 6 extends along the height direction, thereby realizing that the top frame 15 is slidably connected to the base frame 14 along the height direction.

[0031] The top frame 15 and the bottom frame 14 are equipped with a gripping mechanism that grips the container. The gripping mechanism is existing technology and has four lifting points arranged in a rectangular pattern. Each lifting point is equipped with two lifting wheels 7, which are arranged laterally and have their axes extending longitudinally.

[0032] A drive device 9 extending laterally is provided on the crossbeam 16. The drive device 9 includes a hydraulic cylinder. The two drive devices 9 on the two crossbeams 16 are arranged in a centrally symmetrical manner. The extended end of the drive device 9 is connected to a slide block 10 that slides laterally on the crossbeam 16. Two sliding wheels 11 arranged longitudinally and whose axes extend longitudinally are axially connected to the slide block 10.

[0033] The base of the drive unit 9 cylinder is located at the corner of the top frame. The two corners of the cylinder are arranged along the diagonal extension of the top frame. At this corner, there is also a head fixing point 8 located below the drive unit 9 cylinder. One end of the pull rope 20 is connected to the head fixing point 8. The head fixing point 8 is provided with a hook fixed to the top frame. One end of the pull rope 20 is fixed with a pull ring connected to the hook.

[0034] A first guide wheel 1 with its axis extending along the height direction is provided directly above the pull ring. Two first guide wheels 1 are arranged in a transverse direction. A second guide wheel 2 with a height adapted to the first guide wheel 1 is also provided on the longitudinal beam 17. The axis of the second guide wheel 2 extends in a transverse direction. The second guide wheel 2 is located directly above a hanging wheel 7. A third guide wheel 3 located directly above another hanging wheel 7 is also axially connected to the longitudinal beam 17. A tail fixing point 18 is provided on the inner side of the crossbeam 16 located on the top frame. The other end of the pull rope 20 is connected to the tail fixing point 18.

[0035] A second guide wheel 2 and a first guide wheel 1 form a guide wheel group. A pull rope 20, a guide wheel group, and a third guide wheel 3 correspond to a suspension point. The guide wheel and the head fixed point 8 are located on the same side of the sliding wheel 11.

[0036] Specifically, see Appendix Figure 1 The vertical direction is the height direction, and the horizontal direction is the lateral direction. See the attached diagram. Figure 4 The horizontal direction is the transverse direction, and the vertical direction is the longitudinal direction.

[0037] In use, the hydraulic cylinder 6 allows the top frame 15 to slide on the base frame 14, thereby adjusting the height of the gripping structure 19.

[0038] Another method for adjusting the gripping structure 19 is to adjust the length of the gripping device suspended by the pull rope 20 by extending and retracting the drive device 9. Specifically:

[0039] The pull rope 20 extends from the head fixing point 8 along the extension direction of the drive device 9, passes under the pulley 11, then comes out from above the pulley 11, and passes over the first guide wheel 1 along the retraction direction of the drive device 9. Guided by the first guide wheel 1, the pull rope 20 extends longitudinally, passes over the second guide wheel 2 from the top surface of the second guide wheel 2, extends downward, passes under the two hanging wheels 7, passes over the hanging wheels 7, extends upward from the bottom, passes over the third guide wheel 3, and is fixed at the tail fixing point 18.

[0040] In use, by driving the two drive devices 9 to extend or retract synchronously, the position of the sliding wheel 11 in the lateral direction can be adjusted, thereby adjusting the distance between the hanging wheel 7 and the top frame 15, thus adjusting the height of the gripping structure 19. At the same time, the use of the pull rope 20 and the pulley reduces the use of the cylinder body and improves reliability.

[0041] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A container straddle carrier, characterized in that: The system includes a base frame (14), a top frame (15) that slides along the height direction on the base frame (14), and a gripping structure (19) located inside the top frame (15) and moving along the height direction. The top frame (15) is provided with a pull rope (20) that can be detachably connected to the top frame (15) at both ends and is provided with a number of lifting points corresponding to the number of lifting points of the gripping structure (19). The pull rope (20) passes sequentially from the first fixed point (8) around the sliding wheel (11) that slides laterally on the crossbeam (16), the guide wheel group set on the top frame (15), the lifting wheel (7) located at the lifting point of the gripping structure (19), and the third guide wheel (3) set on the top frame (15), and then connects to the top frame (15). The guide wheel and the first fixed point (8) are located on the same side of the sliding wheel (11). The top frame (15) is also provided with a driving device (9) for driving the sliding wheel (11) to slide.

2. The container straddle carrier according to claim 1, characterized in that: Two sliding wheels (11) are slidably connected to each crossbeam (16) of the top frame (15). The two sliding wheels (11) are axled on the same slide (10). The driving device (9) is correspondingly set with the slide (10) and drives the slide (10) to slide. The gripping structure (19) is provided with four lifting points arranged in a rectangle. Two pull ropes (20) that pass around the two sliding wheels (11) on the same slide (10) pass around the two lifting points arranged in the longitudinal direction.

3. The container straddle carrier according to claim 2, characterized in that: The drive device (9) includes a horizontally extending oil cylinder. The two oil cylinders on the two crossbeams (16) are symmetrically arranged. The head fixing points (8) of the two pull ropes (20) corresponding to the same oil cylinder are located at the corner of the top frame (15). The two head fixing points (8) are arranged along the diagonal direction of the top frame (15).

4. The container straddle carrier according to claim 3, characterized in that: The guide wheel assembly includes a first guide wheel (1) whose axis extends along the height direction, and a second guide wheel (2) whose axis extends laterally and whose top surface is adapted to the height of the first guide wheel (1). The second guide wheel (2) is located directly above the hanging wheel (7). The second guide wheel (2) and the third guide wheel (3) are located on both sides of the hanging wheel (7). The axis of the hanging wheel (7) extends longitudinally.

5. The container straddle carrier according to claim 4, characterized in that: Two lifting wheels (7) are provided at the same lifting point. The two lifting wheels (7) are arranged in a horizontal direction and are located directly below the second guide wheel (2) and the third guide wheel (3), respectively.

6. The container straddle carrier according to claim 1, characterized in that: The chassis (14) has two wheels (13) on one horizontal plate and one wheel (13) on the other horizontal plate. A driver's cab (12) connected to the chassis (14) is also provided between the two wheels (13) on the same horizontal plate.

7. The container straddle carrier according to claim 1, characterized in that: The top frame (15) is also provided with reinforcing ribs that connect the two vertical beams.

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