Self-unloading ship hopper gate transport car

Abstract

The application belongs to the technical field of transport trolleys, and discloses a self-unloading ship unloading hopper door transport trolley which comprises a bottom plate, a positioning frame is fixedly arranged on one side of the upper surface of the bottom plate, a limiting frame is fixedly arranged on the side of the upper surface of the bottom plate away from the positioning frame, a positioning inclined table and a limiting inclined table are respectively fixedly arranged on the opposite sides of the positioning frame and the limiting frame, two wheel mechanisms symmetrically distributed are arranged on the sides of the positioning frame and the limiting frame away from each other, the positioning limiting mechanism composed of the positioning frame, the limiting frame, the positioning inclined table, the limiting inclined table and the stress reinforcing plate can stably position and limit the unloading hopper door, the bearing structure strength and the operation stability are improved, the deviation and shaking of the hopper door during the transport process are avoided, the wheel mechanism can be used for flexibly adjusting the height of the axle, different operation conditions can be adapted, and the transport adaptability, the operation stability and the service life of the trolley are effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of transport vehicle technology, specifically a self-unloading ship unloading gate transport vehicle. Background Technology

[0002] The self-unloading ship unloading gate transport trolley is mainly suitable for port, dock and shipyard operation scenarios of various self-unloading ships. It is specially used for the disassembly, transfer and relocation of self-unloading ship unloading gates. It can adapt to short-distance transportation work in the narrow working space inside the cargo hold of self-unloading ships and meet the transfer needs in the process of handling, installation and maintenance of self-unloading ship unloading gates.

[0003] However, the following problems were found in the implementation of the relevant technologies:

[0004] Existing equipment struggles to achieve a stable, fitted fit around the hopper gate during transfer operations, making it prone to displacement, swaying, and even slippage. This not only affects transfer accuracy but also increases the risk of gate damage, operational safety, and the equipment's weak load-bearing capacity, leading to structural deformation and cracking under prolonged heavy loads. Furthermore, the limited space inside the cargo hold of self-unloading vessels, coupled with the large size of conventional transfer equipment, prevents direct entry into the hold for complete transfer of the unloading hopper gate. Instead, the gate must be disassembled into multiple components, transported piece by piece using hoisting, and then reassembled at the target assembly location. This process is cumbersome, involving significant disassembly, hoisting, and assembly work, high transfer difficulty, and substantial manpower and time consumption, resulting in low operational efficiency. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a self-unloading ship unloading gate transport trolley with advantages of high load-bearing strength and flexible adaptability. This invention utilizes a positioning and limiting mechanism comprised of a positioning frame, a limiting frame, a positioning ramp, a limiting ramp, and a stress-reinforcing plate. This mechanism stabilizes and limits the unloading gate, improving the strength of the load-bearing structure and operational stability, preventing gate shifting and swaying during transport. Furthermore, the wheel mechanism allows for flexible adjustment of the axle height to adapt to different operating conditions, effectively improving the trolley's transport adaptability, operational stability, and service life.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-unloading ship unloading gate transport trolley, comprising a base plate, a positioning frame fixedly provided on one side of the upper surface of the base plate, a limiting frame fixedly provided on the side of the upper surface of the base plate away from the positioning frame, a positioning ramp and a limiting ramp respectively fixedly provided on the opposite side of the positioning frame and the limiting frame, and two symmetrically distributed wheel mechanisms provided on the back-to-back side of the positioning frame and the limiting frame.

[0007] Preferably, the wheel mechanism includes an adjusting screw, the upper and lower ends of which are fixedly connected to the upper inner wall of the positioning frame or the limiting frame and the upper surface of the base plate, respectively. An axle is slidably sleeved on the outer side of the adjusting screw, and two adjusting nuts are threadedly sleeved on the outer side of the adjusting screw, with the two adjusting nuts located above and below the axle, respectively. A sliding groove is provided on one side of both the positioning frame and the limiting frame, the inner side of which slides against the axle. A sliding rod is fixedly provided on the inner side of the sliding groove, and the sliding rod slides against the axle. A wheel hub is rotatably provided at one end of the axle, and a tire is sleeved on the outer side of the wheel hub.

[0008] Preferably, two symmetrically distributed force-reinforcing plates are fixedly provided on one side of the limiting inclined platform, and the lower surface of the force-reinforcing plates is fixedly connected to the upper surface of the base plate.

[0009] Preferably, the base plate, positioning frame, limiting frame, positioning ramp and limiting ramp are all made of carbon steel.

[0010] Preferably, the axle is made of alloy structural steel.

[0011] Preferably, two anti-loosening washers are fitted on the outer side of the adjusting screw.

[0012] Preferably, the tire is made of an iron core encased in polyurethane.

[0013] Preferably, a sliding hole is provided in the middle of the axle, and the inner side of the sliding hole slides in conjunction with the outer side of the slide rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The present invention provides a positioning and limiting mechanism consisting of a positioning frame, a limiting frame, a positioning ramp, a limiting ramp, and a stress-reinforcing plate. This mechanism can stably limit the unloading gate, improve the strength of the load-bearing structure and the stability of operation, and prevent the gate from shifting or shaking during transportation.

[0016] 2. This invention, through its wheel mechanism, can flexibly adjust the axle height to adapt to different working conditions, effectively improving the trolley's transport adaptability, operational stability, and service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the bottom structure of the present invention;

[0019] Figure 3 This is a partial structural diagram of the present invention;

[0020] Figure 4 This is a schematic diagram of the wheel mechanism structure of the present invention.

[0021] In the diagram: 1. Base plate; 2. Wheel mechanism; 3. Positioning frame; 4. Positioning ramp; 5. Stress-bearing reinforcing plate; 6. Limiting frame; 7. Limiting ramp; 20. Axle; 21. Adjusting screw; 22. Sliding hole; 23. Anti-loosening washer; 24. Adjusting nut; 25. Sliding rod; 26. Sliding groove; 27. Tire; 28. Wheel hub. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1 to 4 As shown, this invention provides a trolley for transporting cargo hopper gates of self-unloading ships, including a base plate 1. A positioning frame 3 is fixedly mounted on one side of the upper surface of the base plate 1, and a limiting frame 6 is fixedly mounted on the side of the upper surface of the base plate 1 away from the positioning frame 3. A positioning ramp 4 and a limiting ramp 7 are respectively fixed on the opposite sides of the positioning frame 3 and the limiting frame 6. Two symmetrically distributed wheel mechanisms 2 are provided on the back-to-back sides of the positioning frame 3 and the limiting frame 6. When performing transfer operations on the cargo hopper gate of a self-unloading ship, the base plate 1 equipped with the positioning frame 3, the limiting frame 6, and the wheel mechanisms 2 is first pushed to the designated operation position, and then the base plate is used for transfer. 1. As the overall bearing base, the positioning ramp 4 on the side of the positioning frame 3 and the limiting ramp 7 on the side of the limiting frame 6 form a symmetrical limiting clamping structure. The unloading hopper to be transferred is accurately placed in the bearing area between the positioning ramp 4 and the limiting ramp 7. The inclined surface structure of the two sets of ramps fits and limits the unloading hopper, restricting the horizontal displacement and vertical sway of the hopper. At the same time, the wheel mechanism 2 symmetrically arranged on the back of the positioning frame 3 and the limiting frame 6 supports the bottom plate 1 and the overall structure of the hopper above, realizing the flexible movement of the entire equipment and completing the alignment, bearing and transfer operation of the unloading hopper of the self-unloading ship.

[0024] Specifically, the wheel mechanism 2 includes an adjusting screw 21. The upper and lower ends of the adjusting screw 21 are fixedly connected to the upper inner wall of the positioning frame 3 or the limiting frame 6 and the upper surface of the base plate 1, respectively. An axle 20 is slidably sleeved on the outer side of the adjusting screw 21, and two adjusting nuts 24 are threadedly sleeved on the outer side of the adjusting screw 21. The two adjusting nuts 24 are located above and below the axle 20, respectively. A sliding groove 26 is provided on one side of both the positioning frame 3 and the limiting frame 6. The inner side of the sliding groove 26 is slidably fitted with the axle 20. A sliding rod 25 is fixedly provided on the inner side of the sliding groove 26. The sliding rod 25 is slidably engaged with the axle 20. A wheel hub 28 is rotatably mounted on one end of the axle 20, and a tire 27 is sleeved on the outer side of the wheel hub 28. When the trolley is moving and adjusting its height, the adjusting screw 21 serves as a fixed support reference. By rotating the upper and lower sets of adjusting nuts 24 on the adjusting screw 21, the axle 20 sleeved on the outside of the adjusting screw 21 can be pushed or pulled to slide vertically, thereby precisely adjusting the overall height of the axle 20 and the tire 27. During the vertical adjustment of the axle 20, the sliding hole 22 in the middle of the axle 20 is sleeved on the outside of the sliding rod 25 fixed inside the sliding groove 26 and slides. At the same time, the axle 20 slides against the inside of the sliding groove 26, effectively limiting the horizontal displacement of the axle 20 and ensuring the stability of the adjustment process. After the height adjustment is completed, the upper and lower adjusting nuts 24 are locked and positioned to fix the position of the axle 20. When moving during operation, the wheel hub 28 at the end of the axle 20 drives the tire 27 sleeved on the outside to rotate, which, together with the overall vehicle structure, enables the trolley to move and transport smoothly in different working conditions.

[0025] Furthermore, the symmetrically arranged stress-reinforcing plates 5 on the outer side of the limiting inclined platform 7 can provide strong support for the limiting inclined platform 7 when the unloading gate is under pressure, disperse the concentrated load borne by the limiting inclined platform 7, avoid deformation, cracking, and weld failure of the limiting inclined platform 7 under long-term pressure, greatly improve the overall load-bearing strength and structural stability of the limiting structure, extend the service life of the equipment, and ensure the reliability of the limiting under heavy-load transportation conditions.

[0026] Furthermore, the base plate 1, positioning frame 3, limiting frame 6, positioning ramp 4, and limiting ramp 7 are made of carbon steel, which has the characteristics of high hardness, high rigidity, pressure resistance, wear resistance, and rust resistance. It can adapt to the harsh working environment of port docks, which is humid, dusty, and heavy-load, effectively improving the deformation resistance and corrosion resistance of the trolley's main load-bearing structure, and ensuring the structural stability of the equipment during long-term high-intensity operation.

[0027] It is worth noting that the axle 20 is made of alloy structural steel, which has higher strength, toughness and fatigue resistance than ordinary steel. It can withstand alternating loads and impact stresses during heavy-duty transportation, preventing the axle 20 from bending, breaking or wearing out too quickly, and ensuring the reliability of the wheel travel and height adjustment structure.

[0028] It is worth noting that the anti-loosening washer 23 sleeved on the outside of the adjusting screw 21 can effectively offset the thread gap caused by equipment walking vibration and heavy load pressure, prevent the adjusting nut 24 from loosening or shifting during operation, stabilize the adjustment and positioning accuracy of the axle 20, and avoid the problem of vehicle body tilting and unstable walking caused by the height deviation of the trolley wheels.

[0029] It is worth mentioning that the tire 27, with its iron core wrapped in polyurethane material, has an internal iron core that ensures the overall structural strength and load-bearing capacity, while the outer polyurethane material has the advantages of wear resistance, anti-slip, shock absorption, and quietness. It can withstand the pressure of heavy-duty transportation in the sluice gate and can also adapt to the uneven dock surface, reducing walking bumps, slippage, and wear, and improving the stability of transportation.

[0030] It is worth emphasizing that the sliding hole 22 in the middle of the axle 20 and the sliding rod 25 can slide together to precisely guide and limit the vertical adjustment stroke of the axle 20, restrict the left and right and front and back offset of the axle 20, eliminate the problem of the axle 20 getting stuck or misaligned during adjustment, ensure smooth and accurate wheel height adjustment operation, and improve the adjustment accuracy and adaptability of the equipment to working conditions.

[0031] Working principle: When transferring cargo hoppers from self-unloading ships, the base plate 1, equipped with positioning frame 3, limiting frame 6, and wheel mechanism 2, is first pushed to the designated work position. Using the base plate 1 as the overall bearing base, the positioning ramp 4 on the side of the positioning frame 3 and the limiting ramp 7 on the side of the limiting frame 6 form a symmetrical limiting clamping structure. The cargo hopper to be transferred is accurately placed in the bearing area between the positioning ramp 4 and the limiting ramp 7. The inclined structure of the two ramps fits and limits the cargo hopper, restricting the horizontal deviation and vertical sway of the hopper. At the same time, the wheel mechanism 2, which is symmetrically arranged on the back of the positioning frame 3 and the limiting frame 6, supports the base plate 1 and the overall structure of the hopper above, realizing the flexible movement of the entire equipment and completing the alignment, bearing, and transfer operation of the self-unloading ship's cargo hopper.

[0032] During the movement and height adjustment of the trolley, the adjusting screw 21 serves as a fixed support reference. By rotating the upper and lower sets of adjusting nuts 24 on the adjusting screw 21, the operator can push or pull the axle 20, which is sleeved on the outside of the adjusting screw 21, to slide vertically, thereby precisely adjusting the overall height of the axle 20 and the tire 27. During the vertical adjustment of the axle 20, the sliding hole 22 in the middle of the axle 20 slides and engages with the outer side of the sliding rod 25 fixed inside the sliding groove 26. At the same time, the axle 20 slides against the inner side of the sliding groove 26, effectively limiting the horizontal displacement of the axle 20 and ensuring the stability of the adjustment process. After the height adjustment is completed, the upper and lower adjusting nuts 24 are locked and positioned to fix the position of the axle 20. When moving during operation, the wheel hub 28 at the end of the axle 20 drives the outer tire 27 to rotate, which, together with the overall vehicle structure, enables the trolley to move and transport smoothly in different working conditions.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-unloading ship unloading gate transport trolley, comprising a bottom plate (1), characterized in that: A positioning frame (3) is fixedly provided on one side of the upper surface of the base plate (1), and a limiting frame (6) is fixedly provided on the side of the upper surface of the base plate (1) away from the positioning frame (3). A positioning ramp (4) and a limiting ramp (7) are fixedly provided on the opposite side of the positioning frame (3) and the limiting frame (6), respectively. Two symmetrically distributed wheel mechanisms (2) are provided on the opposite side of the positioning frame (3) and the limiting frame (6).

2. The self-unloading ship unloading gate transport trolley according to claim 1, characterized in that: The wheel mechanism (2) includes an adjusting screw (21). The upper and lower ends of the adjusting screw (21) are fixedly connected to the upper inner wall of the positioning frame (3) or the limiting frame (6) and the upper surface of the base plate (1), respectively. The outer side of the adjusting screw (21) is slidably fitted with an axle (20). The outer side of the adjusting screw (21) is threaded with two adjusting nuts (24). The two adjusting nuts (24) are located above and below the axle (20), respectively. The positioning frame (3) and the limiting frame (6) are both provided with a sliding groove (26) on one side. The inner side of the sliding groove (26) is slidably fitted with the axle (20). The inner side of the sliding groove (26) is fixedly fitted with a sliding rod (25). The sliding rod (25) is slidably fitted with the axle (20). One end of the axle (20) is rotatably fitted with a hub (28). The outer side of the hub (28) is fitted with a tire (27).

3. The self-unloading ship unloading gate transport trolley according to claim 1, characterized in that: Two symmetrically distributed force-reinforcing plates (5) are fixedly provided on one side of the limiting inclined platform (7), and the lower surface of the force-reinforcing plate (5) is fixedly connected to the upper surface of the base plate (1).

4. The self-unloading ship unloading gate transport trolley according to claim 1, characterized in that: The base plate (1), positioning frame (3), limiting frame (6), positioning ramp (4) and limiting ramp (7) are all made of carbon steel.

5. A self-unloading ship unloading gate transport trolley according to claim 2, characterized in that: The axle (20) is made of alloy structural steel.

6. A self-unloading ship unloading gate transport trolley according to claim 2, characterized in that: Two anti-loosening washers (23) are fitted on the outside of the adjusting screw (21).

7. A self-unloading ship unloading gate transport trolley according to claim 2, characterized in that: The tire (27) is made of polyurethane wrapped around an iron core.

8. A self-unloading ship unloading gate transport trolley according to claim 2, characterized in that: The axle (20) has a sliding hole (22) in the middle, and the inner side of the sliding hole (22) slides with the outer side of the slide rod (25).

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