Tilting mechanism of container bulk cargo tilting and unloading attachment

Abstract

This invention discloses a tilting mechanism for a container bulk cargo tilting and unloading attachment, comprising a hydraulic cylinder unit, a tilting shaft, a rocker arm, and two connecting rods. The hydraulic cylinder unit is connected to a rotating arm seat; the tilting shaft can rotate relative to the rotating arm seat; the rocker arm has three connecting parts arranged in a triangle, the first connecting part is connected to the rotating arm seat, the second connecting part is connected to the hydraulic cylinder unit, and the third connecting part is connected to the first connecting rod. The first connecting rod and the second connecting rod are connected together, and the second connecting rod and the tilting shaft can be synchronously connected, with the second connecting rod driving the tilting shaft to rotate. It has the following advantages: it reliably and efficiently achieves tilting for container unloading using only simple connecting and synchronous rotation transmission; the structure is simple, the number of parts is small, greatly reducing the manufacturing, installation, commissioning, and subsequent maintenance costs of the equipment, and improving the overall reliability and economy of the equipment.

Description

Technical Field

[0001] This invention relates to the field of container loading and unloading equipment technology, and in particular to a flipping mechanism for attachments used to realize the function of flipping and unloading bulk materials from containers. Background Technology

[0002] Multimodal transport plays a crucial role in modern logistics systems. Multimodal transport refers to a transportation process completed through the interconnection and transshipment of two or more modes of transport. Container transport, as a key mode of multimodal transport, greatly improves the safety and efficiency of cargo transportation due to its significant advantages such as high standardization, good sealing, low damage rate, intensification, large scale, liner services, low cost, and high quality. Container reach stackers, as important equipment for container loading and unloading, are mainly used for container stacking and horizontal transport within terminals and yards. They play a key role in container loading and unloading operations at small and medium-sized ports, railway transfer stations, and highway transfer stations, and can also be used as auxiliary equipment at large container terminals. When containers arrive at their destination, unpacking and unloading bulk materials become necessary operations. At this time, specialized equipment is required to tilt and lift the containers or flip them over to achieve efficient unloading of bulk materials. Currently, there are two main typical solutions for providing the tilting torque for unloading bulk materials from tilted containers:

[0003] 1. Rotary motor drives slewing bearing rotation: For example, CN214298310U uses a rotary motor to drive the slewing bearing, thereby achieving container tilting. However, the rotary motor and slewing bearing system has a relatively complex structure with numerous parts, which not only increases the initial manufacturing cost of the equipment, but also makes maintenance and repair more difficult and costly during subsequent use due to frequent friction between components and complex transmission relationships.

[0004] 2. Hydraulic cylinder pulls rack and pinion to rotate gear shaft: For example, CN201777780U uses a hydraulic cylinder to pull a rack, which in turn drives the gear shaft to rotate, thus achieving container tilting. However, this solution involves the coordinated operation of multiple components such as the hydraulic cylinder, rack, and gear shaft, resulting in a relatively long transmission chain and complex structural design. Similarly, during long-term use, these components are prone to wear and jamming, leading to high maintenance and repair costs.

[0005] In summary, while existing tipping solutions can achieve container tipping and unloading, their complex structure leads to high maintenance and repair costs, thus limiting their practical application. Summary of the Invention

[0006] The present invention provides a tipping mechanism for container bulk cargo tipping and unloading attachments, which overcomes the shortcomings of the prior art.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a tilting mechanism for a container bulk cargo tilting and unloading attachment, connected to a rotating arm base 1, the tilting mechanism comprising:

[0008] The first end of the hydraulic cylinder unit 2 is connected to the rotating arm seat 1;

[0009] The flip shaft 3 can rotate relative to the rotating arm 1;

[0010] The rocker arm 4 has three connecting parts arranged in a triangle, namely a first connecting part, a second connecting part, and a third connecting part. The first connecting part of the rocker arm 4 is connected to the rotating arm seat 1, and the second connecting part is connected to the second end of the hydraulic cylinder unit 2.

[0011] The first link 5 and the second link 6 are connected together with the third connecting part of the rocker arm 4. The second link 6 and the flip shaft 3 can be synchronously connected together, and the second link 6 drives the flip shaft 3 to rotate.

[0012] In one embodiment: the first end of the first link 5 is connected to the third connecting part of the rocker arm 4, the second end of the first link 5 is connected to the first end of the second link 6, and the second end of the second link 6 and the flipping shaft 3 can be synchronously connected to each other.

[0013] In one embodiment: the rocker arm 4 has a triangular structure, and the three vertices of the triangular structure respectively constitute the three connecting parts mentioned above.

[0014] In one embodiment: the first connecting part of the rocker arm 4 is connected to the rotation axis of the rotating arm seat 1 and the rotation axis of the flipping shaft 3, which are not coaxial.

[0015] In one embodiment: the second connecting part and the third connecting part of the rocker arm 4 are respectively axially symmetrically arranged on both sides of the first connecting part.

[0016] In one embodiment: the first end of the hydraulic cylinder unit 2 is connected to the rotation axis of the rotating arm seat 1 as the first axis, the first connecting part of the rocker arm 4 is connected to the rotation axis of the rotating arm seat 1 as the second axis, and the flipping shaft 3 is connected to the rotation axis of the rotating arm seat 1 as the third axis. The first axis is on top, and the second and third axes are on the bottom and are arranged at intervals from left to right. The hydraulic cylinder unit 2 is located to the left of the second axis.

[0017] In one embodiment: the rotation axis of the second connecting part and the cylinder unit 2, the rotation axis of the third connecting part and the first connecting rod 5, and the rotation axis of the first connecting rod 5 and the second connecting rod 6 are arranged along the first circumferential direction. The first connecting part is connected to the rotation axis of the rotating arm seat 1 and the rotation axis of the flipping shaft 3, which are located within the first circumferential direction.

[0018] In one embodiment, the distance between the rotation axis of the first connecting part and the rotation axis of the rotating arm seat 1 and the rotation axis of the flipping shaft 3 is less than the arm length of the second connecting rod 6 relative to the axis of the flipping shaft 3.

[0019] In one embodiment: the second end of the second connecting rod 6 is provided with a mounting hole, the mounting hole is provided with a spline structure hole, the flip shaft 3 has a spline structure section 31, the spline structure hole is adapted to be connected to the spline structure section 31 of the flip shaft 3, so that the second end of the second connecting rod 6 and the flip shaft 3 are connected together to rotate synchronously.

[0020] In one embodiment: the cylinder unit 2 includes a cylinder and a piston connected in the cylinder, the cylinder is connected to the rotating arm seat 1, and the piston and the second connecting part are connected together; the first connecting rod 5 and the second connecting rod 6 include arc-shaped segments.

[0021] Compared with the prior art, this technical solution has the following advantages: it can reliably and efficiently achieve the flipping of containers for unloading by simply using a simple transfer and synchronous rotation transmission. The structure is simple and the number of parts is small, which greatly reduces the manufacturing, installation, commissioning and subsequent maintenance costs of the equipment, and improves the overall reliability and economy of the equipment. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a perspective view of the tilting mechanism of the container bulk cargo tilting and unloading attachment according to a specific implementation method.

[0024] Figure 2 This is one of the front views of the tilting mechanism of the container bulk cargo tilting and unloading attachment in a specific embodiment.

[0025] Figure 3 This is the second front view of the tilting mechanism of the container bulk cargo tilting and unloading attachment in a specific implementation.

[0026] Figure 4 This is an exploded perspective view of the tilting mechanism of the container bulk cargo tilting and unloading attachment according to a specific implementation method.

[0027] Figure 5 This is a schematic diagram illustrating the principle of the tilting mechanism of the container bulk cargo tilting and unloading attachment in a specific implementation.

[0028] Figure 6 This is a cross-sectional view of the tilting mechanism of the container bulk cargo tilting and unloading attachment according to a specific implementation.

[0029] Figure 7 This is a three-dimensional view of a multimodal transport vehicle used in a specific implementation method.

[0030] Figure 8This is a perspective view of the bulk material tipping and unloading attachment of the multimodal transport vehicle in a specific implementation.

[0031] Labeling: 1. Rotary arm seat; 2. Hydraulic cylinder unit; 3. Tilting shaft; 4. Rocker arm; 5. First connecting rod; 6. Second connecting rod; 21. Hydraulic cylinder; 211. First pin; 22. Piston; 31. Spline structure section; 32. Bearing; 33. Bearing spacer; 34. Sealing end cover; 35. Skeleton oil seal; 401. First connecting part; 402. Second connecting part; 403. Third connecting part; 41. Bushing; 42. Second pin; 43. Third pin; 44. Fourth pin; 61. Fifth pin; 62. Mounting hole; 71. Rotary frame; 72. Lifting arm; 73. Lifting bracket; 74. Crossbeam. Detailed Implementation

[0032] Please refer to Figures 1 to 6 The tilting mechanism of the container bulk cargo tilting and unloading attachment is connected to the rotating arm seat 1. The tilting mechanism includes a hydraulic cylinder unit 2, a tilting shaft 3, a rocker arm 4, a first connecting rod 5, and a second connecting rod 6.

[0033] The flipping shaft 3 is pivotally mounted on the rotating arm seat 1 so that it can rotate relative to the rotating arm seat 1. The cylinder unit 2 includes a cylinder 21 and a piston 22 slidably connected to the cylinder 21. The bottom of the cylinder 21 is pivotally connected to the rotating arm seat 1. In a specific structure, the bottom of the cylinder is reliably pivotally connected to the rotating arm seat 1 via a first pin 211. The rotation axis generated by this pivot is a first axis. Further, a fixing plate is fixedly connected to one end of the first pin 211. The first pin 211 passes through the pivot hole of the connecting seat of the cylinder bottom (so that the pivot hole and the pin can rotate relative to each other). The fixing plate is locked to the rotating arm seat 1 to assemble them together. The rocker arm 4 has a triangular structure. The three vertices of the triangular structure form three connecting parts arranged in a triangle. The first connecting part 401 of the rocker arm 4 is pivotally connected to the rotating arm seat 1. The second connecting part 402 of the rocker arm 4 is pivotally connected to the end of the piston 22. The third connecting part 401 of the rocker arm 4 is pivotally connected to the rotating arm seat 1. The connecting part 403 and the first end of the first connecting rod 5 are connected together. The rocker arm 4 has a triangular structure, which has good mechanical properties and motion transmission capability. In the specific structure, three holes are provided at the three vertices. The first connecting part 401 has a large hole, in which a bushing 41 is installed. A second pin 42 passes through the bushing 41 and connects to the rotating arm seat 1, so that the rocker arm 4 can rotate flexibly around the second pin 42. The axis of rotation is the second axis. The second connecting part 402 has a small hole. A third pin 43 passes through the small hole of the second connecting part 402 and connects to the end of the piston 22. When the cylinder unit 2 extends or retracts, it can drive the rocker arm 4 to swing around the second pin 42. The third connecting part 403 has a small hole. A fourth pin 44 passes through the small hole of the third connecting part 403 and connects to the first end of the first connecting rod 5. The second end of the first link 5 and the first end of the second link 6 are rotatably connected together. The second end of the second link 6 is synchronously connected to the tilting shaft 3. The first link 5 and the second link 6 transmit force and motion, transmitting the swing motion of the rocker arm 4 to the first link 5, and then to the second link 6. The second link 6 drives the tilting shaft 3 to rotate, ensuring the continuity and accuracy of the mechanism's motion. In the specific structure, the second end of the first link 5 and the first end of the second link 6 are rotatably connected together by the fifth pin 61. The second end of the second link 6 is provided with a mounting hole 62, which is a spline structure hole. The rotating shaft 3 has a spline structure section 31 with a spline structure that matches the circumferentially evenly arranged teeth. The mounting hole 62 is adapted to fit into the spline structure section 31 of the rotating shaft 3, so that the second end of the second connecting rod 6 and the rotating shaft 3 rotate synchronously and are connected together, realizing efficient power transmission and precise motion matching, ensuring that there will be no slippage or misalignment during the transmission of torque. Other structures such as direct fixing, such as sleeve + key, can also be used as needed. If the first connecting rod 5 and the second connecting rod 6 are arc-shaped (arc opening facing the first connecting part 401), it provides clearance space for the mechanism, avoids mutual interference, and improves the compactness of the structure.The hydraulic cylinder unit 2 serves as a power output component, providing stable and controllable thrust or pull. During operation, the hydraulic cylinder unit 2 extends and retracts according to control commands, driving other connected components (rocker arm 4, first connecting rod 5, second connecting rod 6, and tilting shaft 3) to produce corresponding actions, providing rotational torque to the rotating frame 71 mounted on the tilting shaft 3, driving the rotating frame 71 to tilt and unload the container, and providing power support for the tilting action.

[0034] The rotating arm seat 1 is the basic support component of the entire tilting mechanism, serving to connect and fix other components, providing a solid foundation for the stable operation of the entire mechanism. The rotating arm seat 1 has a box-like structure with walls arranged on two sides. The cylinder unit 2, rocker arm 4, first connecting rod 5, and second connecting rod 6 are installed inside the box. The cylinder unit 2 and rocker arm 4 are rotatably connected to the walls. The two walls have pivot holes. The tilting shaft 3 has a shoulder in the middle to form two stepped surfaces. The shoulder has the aforementioned spline structure section 31 and is equipped with two bearings 32. The bearings 32 connect the tilting shaft 3 to the pivot holes of the walls. Bearing spacers 33 are provided between the two bearings 32 and the two stepped surfaces to achieve axial positioning, ensuring the tilting shaft 3 can rotate flexibly and providing stable support, reducing friction and vibration during rotation. The pivot holes of the walls also have sealing end caps 34 and skeleton oil seals 35 to provide sealing, effectively preventing dust and impurities from entering, protecting the transmission components, and extending the service life of the equipment.

[0035] The first axis (the first end of the cylinder unit 2 is connected to the rotating arm seat 1), the second axis (the first connecting part 401 of the rocker arm 4 is connected to the rotating arm seat 1), and the third axis of rotation of the tilting shaft 3 are arranged in a triangle, with the first axis at the top and the second axis at the bottom. The second and third axes are arranged horizontally and alternately. The cylinder unit 2 is located to the left of the line connecting the first and second axes. The distance between the second axis and the axis of the tilting shaft 3 is less than the arm length of the second connecting rod 6 relative to the axis of the tilting shaft 3. The fourth axis connected to the second end of the cylinder unit 2 by the second connecting part 402, the fifth axis connected to the first end of the first connecting rod 5 by the third connecting part 403, and the sixth axis connected to the first connecting rod 5 and the second connecting rod 6 are arranged along the first circumferential direction. The axis of connection between the second axis and the tilting shaft is located within the enclosure of the first circumferential direction.

[0036] The second connecting part 402 and the third connecting part 403 of the rocker arm 4 are symmetrically arranged on both sides of the first connecting part 401. The line connecting the second and third apex of the rocker arm 4 is an arc that convexes outwards away from the second axis. The axes of the line connecting the first and second apex and the line connecting the first and third apex are symmetrically arranged and are all concave arcs.

[0037] In actual operation, when the container needs to be tilted for unloading, the hydraulic cylinder unit 2 starts to move according to the control signal, extending or retracting. The extension and retraction of the hydraulic cylinder unit 2 is transmitted to the rocker arm 4 through the third pin 43, causing the rocker arm 4 to swing around the second pin 42 connected to the rotating arm seat 1. The swing of the rocker arm 4 then drives the first connecting rod 5 to move through the fourth pin 44, and the first connecting rod 5 then transmits the motion to the second connecting rod 6 through the fifth pin 61. The second connecting rod 6 is connected to the tilting shaft 3 through a spline structure, driving the tilting shaft 3 to rotate under the support of the bearing 42 and the bearing spacer 43. The torque generated by the rotation of the tilting shaft 3 is then transmitted to the rotating frame 71 through the spline structure at its output end. The rotating frame 71 drives the container connected to it to achieve smooth tilting for unloading, completing the tilting and unloading operation of the container bulk materials. The tilting mechanism of the container bulk material tilting and unloading attachment, through the above structural design and the coordinated work between the components, abandons the traditional complex transmission structure and only adopts simple transfer and synchronous rotation transmission to reliably and efficiently realize the 180° rotation unloading function of the container. With its simple structure and few components, it greatly reduces the costs of manufacturing, installation, commissioning, and subsequent maintenance of the equipment, improving the overall reliability and economy of the equipment, and demonstrating significant innovation and practicality.

[0038] For front-end cranes using the aforementioned tilting mechanism, please refer to [link / reference needed]. Figure 7 , Figure 8 It has a lifting boom 72, on which a lifting frame 73 is suspended. A crossbeam 74 is slidably connected to the lifting frame 73. The crossbeam 74 can slide laterally relative to the lifting frame 73. The two ends of the crossbeam 74 are fixedly connected to the aforementioned rotating arm seat 1. A rotating frame 71 is located between the two rotating arm seats 1 and can rotate relative to the rotating arm seats 1. The rotating shaft 3 of the two rotating arm seats 1 is fixedly or synchronously rotated to connect the rotating frame 71 located between the two rotating arm seats 1. The rotating frame 71 can connect to a container.

[0039] The above description is merely a preferred embodiment of the present invention, and therefore should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A tilting mechanism for a container bulk cargo tilting and unloading attachment, connected to a rotating arm base (1), the tilting mechanism comprising: The first end of the hydraulic cylinder unit (2) is connected to the rotating arm seat (1). The flip shaft (3) can rotate relative to the rotating arm seat (1); Its characteristic is that it also includes: The rocker arm (4) has three connecting parts arranged in a triangle, namely the first connecting part, the second connecting part, and the third connecting part. The first connecting part of the rocker arm (4) is connected to the rotating arm seat (1), and the second connecting part is connected to the second end of the cylinder unit (2). The first connecting part of the rocker arm (4) is connected to the rotating arm seat (1), and the rotating axis of the rotating shaft (3) is not coaxial. The first link (5) and the second link (6) are connected together at the third connection of the first link (5) and the rocker arm (4). The second link (6) and the flip shaft (3) can be synchronously connected together, and the flip shaft (3) is driven to rotate by the second link (6). The first end of the first link (5) and the third connection of the rocker arm (4) are connected together. The second end of the first link (5) and the first end of the second link (6) are connected together. The second end of the second link (6) and the flip shaft (3) can be synchronously connected together. The cylinder unit (2) includes a cylinder and a piston connected in the cylinder. The cylinder is connected to the rotating arm seat (1). The piston and the second connection are connected together. The first link (5) and the second link (6) include arc-shaped sections.

2. The tipping mechanism of the container bulk cargo tipping and unloading attachment according to claim 1, characterized in that: The rocker arm (4) has a triangular structure, and the three vertices of the triangular structure constitute the three connecting parts mentioned above.

3. The tipping mechanism of the container bulk cargo tipping and unloading attachment according to claim 2, characterized in that: The second and third connecting parts of the rocker arm (4) are axially symmetrically arranged on both sides of the first connecting part.

4. The tipping mechanism of the container bulk cargo tipping and unloading attachment according to claim 1, characterized in that: The first end of the cylinder unit (2) is connected to the rotation axis of the rotating arm seat (1) as the first axis, the first connecting part of the rocker arm (4) is connected to the rotation axis of the rotating arm seat (1) as the second axis, and the flipping shaft (3) is connected to the rotation axis of the rotating arm seat (1) as the third axis. The first axis is on top, the second axis and the third axis are on the bottom and are arranged on the left and right at intervals. The cylinder unit (2) is located to the left of the second axis.

5. The tipping mechanism of the container bulk cargo tipping and unloading attachment according to claim 1, characterized in that: The rotation axis of the second connecting part and the cylinder unit (2), the rotation axis of the third connecting part and the first connecting rod (5), and the rotation axis of the first connecting rod (5) and the second connecting rod (6) are arranged along the first circumferential direction. The first connecting part is connected to the rotation axis of the rotating arm seat (1) and the rotation axis of the flipping shaft (3) are located within the first circumferential direction.

6. The tipping mechanism of the container bulk cargo tipping and unloading attachment according to claim 1, characterized in that: The distance between the rotation axis of the first connecting part and the rotation axis of the rotating arm seat (1) and the rotation axis of the flipping shaft (3) is less than the arm length of the second connecting rod (6) relative to the axis of the flipping shaft (3).

7. The tipping mechanism of the container bulk cargo tipping and unloading attachment according to claim 1, characterized in that: The second end of the second connecting rod (6) is provided with a mounting hole, which is provided with a spline structure hole. The flip shaft (3) has a spline structure section (31), which is adapted to be connected to the spline structure section (31) of the flip shaft (3), so that the second end of the second connecting rod (6) and the flip shaft (3) rotate synchronously and are connected together.

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