A new type of marine self-unloading container

Abstract

The utility model belongs to container technical field especially relates to a novel sea transportation self -discharging box. The box body is surrounded by bottom plate, side plate, front end plate and rear end plate, is equipped with self -discharging door in rear end plate lower part, and is hinged down. The both sides of door body are provided with mounting panel, and the gravity trigger and locking execution assembly are arranged; wherein the trigger assembly contains track, counterweight, elastic piece affected retractable limiting piece, and the counterweight slides down along the track to drive the limiting piece to exit when the box body overturns and discharges, and the door body opens under the dead weight; the limiting piece extends to realize automatic locking when resetting and flattening. The upper mouth is outwardly expanded, and the circular arc flow guide plate is arranged at the corner, the top adopts the standard angle piece cooperation port hoist, and the auxiliary locking mechanism can be matched. The structure is reliable in release, resets self -locking, and has little residual discharge, and is suitable for quick unloading of bulk cargo.

Description

Technical Field

[0001] This utility model belongs to the field of container technology, and in particular relates to a new type of self-unloading container for sea transport. Background Technology

[0002] The growth of global trade volume and the upgrading of logistics efficiency have made containerized transport an important mode of international bulk cargo transportation due to its standardization and multimodal transport advantages. However, traditional standard containers usually lack active unloading capabilities, relying on external equipment for loading and unloading. This results in numerous operational steps, limited turnover efficiency, and a high risk of cargo damage and dust generation during repeated handling. To improve unloading efficiency, self-unloading containers are commonly used in land transport or short-distance transshipment scenarios. However, their structures often employ fixed lifting handles or exposed mechanisms, exceeding the outer contour of standard corner fittings. This makes them incompatible with the tilting or lifting spreaders commonly used in maritime transport, posing risks of pinching, interference, and safety hazards. Furthermore, some existing self-unloading containers have many right-angle corners inside, making it easy for materials to get stuck at corners and seams, resulting in incomplete unloading. In the high salt spray and strong vibration environment at sea, the reliability and durability of locking and reset mechanisms are also difficult to guarantee. In summary, the market urgently needs a self-unloading container structure that is compatible with marine spreader rigs, has reliable self-locking and release functions, and reduces residual self-unloading containers, in order to adapt to the full-scenario bulk cargo logistics of both sea and land transportation. Summary of the Invention

[0003] This utility model addresses the shortcomings of existing technologies by providing a new type of self-unloading container for marine transport.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a self-unloading container for marine transport, comprising a container body with a top opening formed by a bottom plate, side plates, a front plate, and a rear plate, wherein a self-unloading door is provided at the lower part of the rear plate, and the self-unloading door is rotatably connected to the container body through a hinge; mounting panels are provided on both sides of the container body at the corresponding positions of the self-unloading door, and gravity triggering components and locking execution components are respectively provided on the mounting panels.

[0005] The gravity triggering component includes a track that guides along a set direction, a counterweight that can move on the track, and a limiting component that is linked to the counterweight and is retractable under the action of an elastic element.

[0006] The locking actuator includes a connecting rod that is guided to make linear motion and is connected to the self-unloading door drive. The connecting rod is provided with a limiting groove to detachably engage with the limiting member.

[0007] When the self-unloading box is tilted to unload, the counterweight slides down relative to the track, driving the limiter to exit the limit groove, and the self-unloading door opens under its own weight; when the self-unloading box is reset and leveled, the elastic element causes the limiter to reset and re-insert into the limit groove, realizing the automatic locking of the self-unloading door.

[0008] Furthermore, the track is inclined relative to the horizontal, and the track has a locking end at the upper end and a releasing end at the lower end; when the self-unloading box flips from the horizontal position to the unloading direction, the releasing end is on the lower side in the direction of gravity, and the counterweight slides along the track from the locking end to the releasing end under the action of gravity, and drives the limiting member to exit the limiting groove of the connecting rod.

[0009] Furthermore, the limiting member passes through the stop fixed on the mounting panel and is coaxially engaged with the compression spring. The compression spring is located between the stop and the step of the limiting member, providing the limiting member with a restoring force along the track direction.

[0010] Furthermore, the connecting rod is limited to linear reciprocating motion by the connecting rod guide block, and is rotatably connected to the self-unloading door via a pin.

[0011] Furthermore, the side plates and front plate are inclined outward relative to the bottom plate to form a flared structure, and arc-shaped guide plates are provided at the corners between the side plates and the bottom plate, as well as between the front plate and the bottom plate.

[0012] Furthermore, an elastic sealing gasket is installed between the self-unloading door frame and the perimeter of the rear panel door opening to ensure both sealing and smooth opening and closing.

[0013] Furthermore, on the outer surfaces of the side plates, front plate, and / or rear plate, at least two L-shaped reinforcing angle steels are provided along the height direction of each plate. The reinforcing angle steels have a first straight edge and a second straight edge that are perpendicular to each other. The first straight edge is attached to the corresponding plate surface and welded and fixed along its length direction. The second straight edge extends outward along the normal direction of the plate surface and is used as a stiffening rib. The lower end of each reinforcing angle steel is welded to the adjacent area of ​​the bottom plate, and the upper end is welded to the upper edge of the box body and / or the adjacent area of ​​the standard corner piece. At the rear plate, the edge of the self-unloading door opening is avoided or disconnected.

[0014] Furthermore, standard corner fittings are provided at the four corners of the top of the container for use with port-standard tilting or lifting spreaders, and no exposed fixed lifting handles are provided on the outer surface of the container.

[0015] Furthermore, the gravity triggering component and the locking execution component are symmetrically installed in pairs on the mounting panels on both sides of the self-unloading box to achieve synchronous release and locking of the self-unloading door.

[0016] Compared with the prior art, this utility model has the following advantages.

[0017] This invention achieves automatic release and relocking without external energy through gravity triggering and elastic reset; reduces residue through the flared mouth and arc guide plate; significantly improves deformation resistance through reinforced angle steel; enhances compatibility and operational safety through standard corner fittings; and strengthens vibration resistance reliability for long-distance maritime transport through auxiliary locking components. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The scope of protection of the present invention is not limited to the following description.

[0019] Figure 1 This is a three-dimensional schematic diagram of a new type of self-unloading container for maritime transport.

[0020] Figure 2 This is a front view of the unloading status of a new type of self-unloading container for maritime transport.

[0021] Figure 3 This is a partial view of a novel self-unloading mechanism for ocean shipping containers.

[0022] Figure 4 This is a three-dimensional schematic diagram of a new type of self-unloading container for maritime transport.

[0023] Figure 5 This is a partial side view of a new type of self-unloading container for maritime transport with a self-unloading door.

[0024] Figure 6 This is a partial front view of a new type of self-unloading container for maritime transport with a self-unloading door.

[0025] Figure 7 This is a partial sectional view of the side panel of a novel self-unloading container for maritime transport.

[0026] Figure 8 This is a partial cross-sectional view of the front panel of a novel self-unloading container for maritime transport.

[0027] In the diagram: 1. Box body; 2. Gravity triggering component; 3. Self-unloading door; 4. Locking execution component; 5. Auxiliary locking component; 6. Mounting panel; 101. Standard corner piece; 102. Side plate; 103. Rear end plate; 104. Front end plate; 105. Bottom plate; 106. Arc guide plate; 107. Reinforcing angle steel; 201. Track; 202. Counterweight block; 203. Spring stop block; 204. Compression spring; 205. Limiting component (limiting pin); 301. Self-unloading door frame; 302. Sealing gasket; 401. Connecting rod; 402. Pin; 403. Connecting rod guide block; 404. Limiting groove (limiting slot); 501. Hinge; 502. Connecting rod tube; 503. Pressure tube; 504. Stop bar; 505. U-shaped limiting seat; 506. Spring buckle. Detailed Implementation

[0028] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0029] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0030] Depending on the context, words such as “if” or “suppose” used here can be interpreted as “when”, “in response to determination”, or “in response to detection”.

[0031] For ease of understanding, the embodiments of this disclosure will be described in detail first.

[0032] like Figure 1-8 As shown, the self-unloading container for ocean shipping in this embodiment is formed by a bottom plate 105, two side plates 102, a front plate 104, and a rear plate 103, creating a container body 1 with an open top. A doorway is formed at the lower part of the rear plate 103, and the self-unloading door 3 is rotatably connected to the container body via a hinge 501 (the hinge 501 is a hinge) arranged along the lower edge of the rear plate. Mounting openings are provided at the lower ends of the joints between the side plates 102 and the rear plate 103, and are closed with mounting panels 6, thereby forming flat, screw-on / welded mounting bases on both sides of the container body for symmetrically mounting the gravity trigger assembly 2 and the locking execution assembly 4. Standard corner brackets 101 are arranged at the four corners of the top of the container body to adapt to port-standard tilting or lifting spreaders, enabling safe gripping and tilting without exposed fixed handles.

[0033] Example 1: The gravity trigger assembly 2 includes: a track 201 arranged at a relative horizontal inclination, the track having a locking end at the upper end and a releasing end at the lower end; a counterweight 202 that can slide on the track; a limiting member 205 (the limiting member 205 is a limiting pin 205) fixedly connected to the counterweight 202; a spring stop 203 fixed on the mounting panel 6; and a compression spring 204 coaxially arranged with the limiting pin 205. The limiting pin 205 passes through the spring stop 203, and the compression spring 204 is located between the spring stop 203 and the step of the limiting pin 205, providing a spring force to extend and reset the limiting pin along the track direction when the self-unloading box is in a horizontal or return state.

[0034] When the self-unloading box is in a non-tilted state (horizontally placed), the angle between the inclination direction of the track 201 and the direction of gravity is relatively large. The self-weight component of the counterweight block 202 mainly acts on the inner wall of the track, rather than the sliding direction along the track, so there is no obvious downward trend. When the self-unloading box is tilted from the horizontal position to the unloading direction, the release end is located on the lower side of the direction of gravity. Under the action of its own weight, the counterweight block 202 slides along the track from the locking end to the release end, driving the limit pin 205 to retract and exit the limit slot 404 of the connecting rod 401, completing the release. It should be noted that the track 201 can be a straight groove, a roller guide rail, or a semi-enclosed guide groove with a cover; the inclination angle can be optimized according to the box size and tilting angle; the above are preferred embodiments and are not limited.

[0035] Example 2: The locking execution component 4 includes a connecting rod guide block 403 and a connecting rod 401 passing through it. The connecting rod 401 is guided to perform linear reciprocating motion. One end of the connecting rod 401 is provided with a limiting slot 404 that can be detachably engaged with a limiting pin 205. The other end is rotatably connected to the self-unloading door 3 via a pin shaft 402. When the door is closed, the limiting pin 205 extends into the limiting slot 404 under the action of the compression spring 204 to complete the locking. When unloading and flipping, the counterweight block 202 slides down, causing the limiting pin 205 to exit the limiting slot 404. Under the action of the door's own weight and the material's thrust, the connecting rod 401 moves linearly along the guide direction, thereby driving the door to open.

[0036] Example 3: Auxiliary locking assembly 5. To improve vibration resistance reliability during long-distance transportation, an auxiliary locking assembly 5 can be provided. This assembly includes a connecting rod tube 502 that passes through the self-unloading door frame 301 and can rotate freely relative to the door body, a pressure tube 503 fixed in the middle of the connecting rod tube, stop bars 504 respectively installed at both ends of the connecting rod tube, and U-shaped limit seats 505 provided on both sides of the rear end plate 103.

[0037] The connecting rod tube 502 is supported on the door body at both ends and can rotate around its own axis. The pressure tube 503 is fixedly connected to the connecting rod tube 502 and serves as a manual operating handle. The stop bar 504 is rigidly connected to the connecting rod tube 502 and rotates synchronously with the connecting rod tube. When the door body is closed, the operator holds the pressure tube 503 to rotate the connecting rod tube 502 clockwise, causing the stop bar 504 to insert into the U-shaped limit seat 505, thereby achieving mechanical locking of the self-unloading door.

[0038] As a preferred embodiment, a spring-loaded latch 506 is provided at the door position below the pressure tube 503. The latch has a resilient locking tongue structure. When the pressure tube 503 is rotated to the locking angle and pressed down, the spring-loaded latch 506 automatically springs up and embeds into the annular groove on the pressure tube, fixing the pressure tube in the locked position and preventing rotation due to vibration or impact. When unloading is required, the operator first moves the spring-loaded latch 506 to disengage it from the groove of the pressure tube 503, and then rotates the pressure tube 503 counterclockwise, causing the stop rod 504 to disengage from the U-shaped limit seat 505; at this time, the connecting rod tube 502 returns to its free state, without affecting the opening and tilting of the self-unloading door.

[0039] Example 4: To reduce residue and improve unloading efficiency, the side plates 102 and end plates are inclined outward relative to the bottom plate 105 to form a flared structure (preferably inclined outward by about 2° as an example, not limited); arc-shaped guide plates 106 are respectively set at the corners of the side plates 102 and the bottom plate 105 and the corners of the front plate 104 and the bottom plate 105 to achieve a smooth transition, avoid material accumulation in the sharp corner area, and improve slippage.

[0040] Example 5: L-shaped reinforcing angle steels 107 are provided along the height direction of the two side plates 102, the front plate 104, and / or the rear plate 103 on their outer surfaces. Each reinforcing angle steel 107 has a first straight edge and a second straight edge that are perpendicular to each other. The first straight edge is attached to the corresponding plate surface and welded along its length. The second straight edge extends outward along the normal direction of the plate surface as a stiffening rib. The lower end of each reinforcing angle steel 107 is welded to the adjacent area of ​​the bottom plate 105, and the upper end is welded to the adjacent area of ​​the upper edge of the box body and / or the standard corner piece 101. At the rear plate 103, the edge of the self-unloading door opening is avoided or disconnected. This arrangement creates continuous stiffening along the height direction of the plate surface, improving resistance to bulging and torsional rigidity.

[0041] Example 6: The self-unloading door frame 301 preferably adopts a trapezoidal structure that is wider at the top and narrower at the bottom. A high-elasticity sealing gasket 302 is provided around the door opening of the rear end plate 103 and fits into the periphery of the door frame. This structure can still ensure smooth opening and closing of the door and maintain a seal even when the box body undergoes slight deformation.

[0042] Example 7, Usage Method: 1. After the self-unloading door 3 is closed, the limit pin 205 extends into the limit slot 404 of the connecting rod 401 under the action of the compression spring 204, completing the main locking; at the same time, the operator rotates the pressure tube 503, so that the stop bar 504 is inserted into the U-shaped limit seat 505, and then presses down on the pressure tube 503, so that it is locked by the spring buckle 506, forming an auxiliary locking. At this time, the self-unloading door is in a double-locked state, which can effectively prevent accidental opening caused by transportation vibration.

[0043] 2. Before unloading, the operator first releases the auxiliary lock. When the self-unloading box is flipped to the unloading angle by the lifting device, the counterweight 202 in the gravity trigger component 2 slides along the track 201 to the release end under its own weight, compressing the compression spring 204 and causing the limit pin 205 to exit the limit groove 404. After the connecting rod 401 is released from the limit, the self-unloading door 3 opens under its own weight and the pushing force of the material, realizing automatic unloading.

[0044] 3. After unloading, the container is placed horizontally again. The spring force of the compression spring 204 causes the limit pin 205 to extend along the track direction and re-enter the limit groove 404, achieving the main lock reset. The operator then rotates the pressure tube 503, causing the stop bar 504 to re-insert into the U-shaped limit seat 505, and presses it downwards to engage the spring clip 506 in the pressure tube groove, completing the auxiliary locking. At this point, the self-unloading container returns to its transport state.

[0045] The preferred solution is a self-unloading door, the size of which can cover the lower half of the rear end plate that has been removed. The height of the self-unloading door is about half that of the rear end plate, and the width is the same as that of the rear end plate. The large size of the self-unloading door can reduce unloading resistance and increase unloading speed.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "preferred embodiment," "detailed description," or "preferred embodiment," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Therefore, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope defined by the claims of this utility model.

Claims

1. A self-unloading container for marine transport, comprising a container body (1) with a top opening formed by a bottom plate (105), side plates (102), a front end plate (104), and a rear end plate (103), characterized in that: The rear end plate (103) is provided with a self-unloading door (3) at the bottom. The self-unloading door (3) is rotatably connected to the box body through a hinge (501). The box body is provided with mounting panels (6) at the corresponding positions of the self-unloading door on both sides. The mounting panels are respectively provided with a gravity triggering component (2) and a locking execution component (4). The gravity triggering component (2) includes a track (201) that guides along a set direction, a counterweight (202) that can move on the track, and a limiting component (205) that is linked with the counterweight and can be extended and retracted by the action of the elastic component. The locking execution component (4) includes a connecting rod (401) that is guided to make linear motion and is connected to the self-unloading door (3) for transmission. The connecting rod is provided with a limiting groove (404) to be detachably engaged with the limiting member (205). When the self-unloading box is overturned to unload, the counterweight (202) slides down relative to the track (201) to drive the limiter (205) to exit the limit groove (404), and the self-unloading door (3) opens under its own weight; when the self-unloading box is reset and leveled, the elastic element causes the limiter (205) to reset and re-insert into the limit groove (404), thereby realizing the automatic locking of the self-unloading door (3).

2. The self-unloading container for marine transport according to claim 1, characterized in that: The track (201) is inclined relative to the horizontal. The track has a locking end at the upper end and a releasing end at the lower end. When the self-unloading box flips from the horizontal position to the unloading direction, the releasing end is on the lower side of the gravity direction. The counterweight (202) slides along the track from the locking end to the releasing end under the action of gravity, and drives the limiting member (205) to exit the limiting groove (404) of the connecting rod (401).

3. The self-unloading container for marine transport according to claim 1, characterized in that: The limiting member (205) passes through the stop (203) fixed on the mounting panel (6) and is coaxially engaged with the compression spring (204). The compression spring (204) is located between the stop (203) and the step of the limiting member (205) to provide the limiting member with a restoring force along the track direction.

4. The self-unloading container for marine transport according to claim 1, characterized in that: The connecting rod (401) is limited to linear reciprocating motion by the connecting rod guide block (403) and is rotatably connected to the self-unloading door (3) through the pin (402).

5. The self-unloading container for marine transport according to claim 1, characterized in that: The two side plates (102) and the front plate (104) are inclined outward relative to the bottom plate (105) to form a horn-shaped structure, and arc-shaped guide plates (106) are provided at the corners of the side plates (102) and the bottom plate (105) and the front plate (104) and the bottom plate (105).

6. The self-unloading container for marine transport according to claim 1, characterized in that: An elastic sealing gasket (302) is provided between the self-unloading door frame (301) and the periphery of the door opening of the rear end plate (103) to balance sealing and smooth opening and closing.

7. The self-unloading container for marine transport according to claim 1, characterized in that: On the outer sides of the two side plates (102), the front plate (104), and / or the rear plate (103), at least two L-shaped reinforcing angle steels (107) are provided along the height direction of each plate. The reinforcing angle steels (107) have a first straight edge and a second straight edge that are perpendicular to each other. The first straight edge is attached to the corresponding plate surface and welded and fixed along its length direction. The second straight edge extends outward along the normal direction of the plate surface and is used as a stiffening rib. The lower end of each reinforcing angle steel (107) is welded to the adjacent area of ​​the bottom plate (105), and the upper end is welded to the adjacent area of ​​the upper edge of the box body and / or the standard corner piece (101). The self-unloading door opening edge is avoided or disconnected at the rear plate (103).

8. The self-unloading container for marine transport according to claim 1, characterized in that: The top four corners of the container are equipped with standard corner fittings (101) for use with port general tilting or lifting spreaders, and there are no exposed fixed lifting handles on the outer surface of the container.

9. The self-unloading container for marine transport according to claim 1, characterized in that: The gravity trigger component (2) and the locking execution component (4) are symmetrically installed on the mounting panels (6) on both sides of the self-unloading box to realize the synchronous release and locking of the self-unloading door (3).

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