Hinge plate for container

Abstract

The utility model discloses a hinge plate for a container, which comprises a shaft sleeve, a first bending part, a connecting part, a second bending part and a fixing part, the lower surface of the fixing part comprises a first side edge, a second side edge, a third side edge and a fourth side edge, and the first side edge comprises a first slotted hole. The groove hole is formed in the first side edge of the lower surface of the fixing part, and when the hinge plate is welded and installed on the container door, sealant is injected into the space between the container hinge plate and the container door through the groove hole to achieve sealing, so that the problems of corrosion and rusting of the container hinge plate can be effectively solved, and the service life of the container hinge plate is prolonged. Meanwhile, the manufacturing cost is reduced, and the service life, the stability and the safety of the container door and the hinge plate are improved.

Description

Technical Field

[0001] This utility model relates to a hinge plate, and more particularly to an improved hinge plate for containers. Background Technology

[0002] Containers are the most important medium of transport in international trade, playing a crucial role, especially in the import and export of goods overseas. The container body and doors are typically connected by a hinge structure, with the hinge plate being the core component. Currently, hinge plates are usually manufactured by forging and then welded to the container doors.

[0003] As a core component connecting the container body and doors, the hinge plate's service life, safety, and production cost all significantly impact the container's overall lifespan, safety, and cost, making it a crucial consideration in product development. Current technologies largely focus on improving the hinge plate's structure to enhance its strength and rigidity, thereby increasing its lifespan and safety. However, since containers are frequently used in maritime transport, they are susceptible to seawater corrosion, leading to material deformation, reduced rigidity, and a significant decrease in both lifespan and safety. In particular, gaps easily exist at the welded joints between the hinge plate and the door, making them even more vulnerable to seawater corrosion. To mitigate this, current technologies typically apply sealant around the welded joints. However, this sealant can still fail to adhere properly, detach after prolonged use, or deteriorate due to seawater corrosion, ultimately reducing the lifespan of both the hinge plate and the container door.

[0004] In summary, existing technologies lack effective solutions to address or prevent the reduced lifespan and compromised safety of container doors and hinges caused by seawater corrosion and other factors. Therefore, a new technical solution is urgently needed to address these issues. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an improved container hinge plate with a simple structure and low cost, which can effectively avoid seawater corrosion during container use and achieve significant improvements in the strength, safety, and service life of the hinge plate and container door.

[0006] The technical solution of this utility model is as follows:

[0007] This utility model provides a hinge plate for a container, including a bushing, a first bent portion, a connecting portion, a second bent portion, and a fixing portion; wherein, the rear end portion of the bushing is connected to the front end portion of the first bent portion, the rear end portion of the first bent portion is connected to the front end portion of the connecting portion, the rear end portion of the connecting portion is connected to the front end portion of the second bent portion, and the rear end portion of the second bent portion is connected to the front end portion of the fixing portion; wherein, the lower surface of the fixing portion includes a first side, a second side, a third side, and a fourth side, the first side is located at the front end of the lower surface of the fixing portion, the second side is located at the rear end of the lower surface of the fixing portion, and the third and fourth sides are respectively located on the left and right sides of the lower surface of the fixing portion; the first side includes a first slot; sealant is injected into the space between the container hinge plate and the container door through the first slot to achieve sealing.

[0008] Furthermore, the lower surface of the fixing part includes a recess; the first slot communicates with the recess.

[0009] Furthermore, the recess is a groove located at the middle of the lower surface of the fixing part; a first convex ridge is formed between the groove and the first side, a second convex ridge is formed between the groove and the second side, a third convex ridge is formed between the groove and the third side, and a fourth convex ridge is formed between the groove and the fourth side.

[0010] Furthermore, the recess is a surrounding groove located around the lower surface of the fixing part; the surrounding groove includes a first side groove, a second side groove, a third side groove, and a fourth side groove; the first side groove, the second side groove, the third side groove, and the fourth side groove are interconnected.

[0011] Furthermore, the recess further includes a surrounding groove; the surrounding groove includes a first side groove, a second side groove, a third side groove, and a fourth side groove; the first side groove is formed between the first side edge and the first protruding ridge, the second side groove is formed between the second side edge and the second protruding ridge, the third side groove is formed between the third side edge and the third protruding ridge, and the fourth side groove is formed between the fourth side edge and the fourth protruding ridge; the first side groove, the second side groove, the third side groove, and the fourth side groove are interconnected; and the first slot is connected to both the surrounding groove and the recess.

[0012] Furthermore, the second side includes a second slot, which is connected to both the surrounding groove and the recess.

[0013] Furthermore, the second slot is located in the middle of the second side.

[0014] Furthermore, the first slot is located at the middle position of the first side.

[0015] Furthermore, this utility model also provides a container, including the aforementioned container hinge plate; wherein the container hinge plate is fixedly installed to the container door by welding or other means; after the container hinge plate is fixedly installed to the container door, sealant is injected through the first slot.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] 1. Sealant is injected into the space between the hinge plate and the container door through a specially designed first slot, achieving a sealing effect and effectively preventing corrosion caused by seawater intrusion into the cavity; 2. Saves materials and reduces manufacturing costs; 3. Significantly improves the service life and safety of the hinge plate and even the container; 4. Reduces the frequency of staff regularly inspecting the container hinges, reducing workload and improving transportation efficiency. Attached Figure Description

[0018] Figures 1-1 to 1-4 The following are, in order, a perspective view, a bottom view, a top view, and a side view of a hinge plate structure in the prior art;

[0019] Figures 2-1 to 2-4 The following are, in order, a perspective view, a bottom view, a side view, and a rear view of the hinge plate structure of this utility model (Example 1);

[0020] Figures 2-5 to 2-6 This is a three-dimensional schematic diagram of the hinge plate of this utility model installed on the container door (Example 1);

[0021] Figures 3-1 to 3-2 The following are, in order, a perspective view and a bottom view of the hinge plate structure of this utility model (Example 3);

[0022] Figures 3-3 to 3-4 This is a three-dimensional schematic diagram of the hinge plate of this utility model installed on the container door (Example 3);

[0023] Figures 4-1 to 4-2 The following are, in order, a perspective view and a bottom view of the hinge plate structure of this utility model (Example 5);

[0024] Figures 4-3 to 4-4 This is a three-dimensional schematic diagram of the hinge plate of this utility model installed on the container door (Example 5);

[0025] [Symbol Explanation]

[0026] 1. Bushing 2. First Bend

[0027] 3 Connecting part 4 Second bending part

[0028] 5 Fixed part 6 Recessed part

[0029] 71 First side 72 Second side

[0030] 73 Third side 74 Fourth side

[0031] 81 First convex edge 82 Second convex edge

[0032] 83 Third convex ridge 84 Fourth convex ridge

[0033] 9 First slot 10 Surrounding groove

[0034] 101 First side groove 102 Second side groove

[0035] 103 Third side groove 104 Fourth side groove

[0036] 11 Second slot 12 Box door Detailed Implementation

[0037] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. However, it should be understood that this utility model is not limited to the embodiments described below, and the technical concept of this utility model can be implemented in combination with other known technologies or other technologies with the same functions as those known technologies.

[0038] Unless otherwise specified, qualifiers such as "first" and "second" in this document do not refer to limitations on chronological order, quantity, or importance, but are merely used to distinguish one technical feature from another in this technical solution. Similarly, qualifiers such as "one" do not refer to limitations on quantity, but describe technical features not mentioned previously. Likewise, modifiers such as "approximately" or "about" preceding numerals in this document usually include the number itself, and their specific meaning should be understood in conjunction with the context. Similarly, unless a noun is modified by a specific quantifier, it should be considered in this document as including both singular and plural forms; the technical solution may include either a singular or plural number of the technical feature.

[0039] In the following description of specific embodiments, in order to clearly demonstrate the structure and working method of this utility model, a number of directional terms will be used for description. However, terms such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "axial", and "radial" should be understood as convenient terms and should not be understood as limiting terms.

[0040] by Figure 1-1 For example, for ease of explanation, the direction of the hinge plate is defined as follows: one end of the hinge plate bushing 1 is the front end direction, and one end of the hinge plate fixing part 5 is the rear end direction.

[0041] Figures 1-1 to 1-4 The figures shown are, in order, a perspective view, a bottom view, a top view, and a side view of a hinge plate structure in the prior art. From front to rear, it comprises the following parts: a bushing 1, a first bent portion 2, a connecting portion 3, a second bent portion 4, and a fixing portion 5. The portion of the bushing 1 near the rear end connects to the portion of the first bent portion 2 near the front end; the portion of the first bent portion 2 near the rear end connects to the portion of the connecting portion 3 near the front end; the portion of the connecting portion 3 near the rear end connects to the portion of the second bent portion 4 near the front end; and the portion of the second bent portion 4 near the rear end connects to the portion of the fixing portion 5 near the front end. The hinge plate bushing 1 is used to accommodate a pin, meaning the pin passes through the bushing 1, and washers (not shown) are installed on both sides of the pin.

[0042] The lower surface of the recess 6 includes four sides, which are: a first side 71 at the front end of the lower surface of the fixing part 5, a second side 72 at the rear end of the lower surface of the fixing part 5, a third side 73 and a fourth side 74 on the left and right sides of the lower surface of the fixing part 5.

[0043] The lower surface of the fixing part 5 includes a recess 6. This recess 6 primarily serves to save material costs and also provides a certain degree of rigidity, preventing deformation of the hinge plate caused by repeated opening and closing of the container door 12 over a long period. A first convex ridge 81 is formed between the recess 6 and the first side 71, a second convex ridge 82 is formed between the recess 6 and the second side 72, a third convex ridge 83 is formed between the recess 6 and the third side 73, and a fourth convex ridge 84 is formed between the recess 6 and the fourth side 74.

[0044] The hinge plate fixing part 5 is used to fix it to the container door 12. Welding is typically used, specifically welding the second side 72, third side 73, and fourth side 74 of the lower surface of the fixing part 5 as welding points (welding surfaces) to achieve a fixed connection. After welding, the planes between the protrusions and sides of the lower surface of the fixing part 5, excluding the recess 6, will fit against the container door 12. Meanwhile, because the space where the first side 71 fits against the container door 12 is relatively small, welding is usually not performed at this location.

[0045] In existing technologies, when the hinge plate is welded to the container door 12, the only fixing surfaces used for welding are the surfaces corresponding to the second side 72, the third side 73, and the fourth side 74. Therefore, after welding, a cavity is formed between the recess 6 and the door 12. Since small gaps may remain on the welding surfaces between the hinge plate fixing part 5 and the door 12 after welding, these gaps are susceptible to seawater corrosion. Seawater can also enter the cavity through these gaps, further corroding the contact surfaces. This leads to a decrease in the rigidity of the hinge plate during use, loosening of the connection between the hinge plate and the door 12, reduced container lifespan, and compromised container safety.

[0046] Furthermore, some existing hinge plates lack the recess 6, meaning the lower surface of the hinge plate fixing part 5 is planar. For this type of hinge plate, due to the actual manufacturing process and materials, neither the lower surface of the hinge plate fixing part 5 nor the door 12 can be perfectly regular, uniform, and flawless. Therefore, after welding, the lower surface of the fixing part 5 cannot be completely seamlessly and tightly fitted to the surface of the door 12. Simultaneously, small gaps may still exist between the welding surfaces of the hinge plate fixing part 5 and the door 12 (the welding surfaces corresponding to the second side 72, third side 73, and fourth side 74), making corrosion still possible due to seawater intrusion.

[0047] To address these issues, existing technologies typically involve applying a layer of sealant around the welded surface to prevent seawater from directly contacting the welded surface or even penetrating the cavity or gaps between the hinge plate and the container door 12, thus preventing corrosion. However, this approach still presents problems. The sealant itself may peel off due to aging or other reasons, or its sealing effect may decrease or even be lost due to seawater corrosion. This allows seawater to still penetrate the cavity, causing internal corrosion. Once corrosion occurs, it is irreversible. The rust produced by corrosion expands in volume, and in severe cases, it can even directly damage the container door 12 and the hinge plate, rendering the container unusable.

[0048] To alleviate the above problems, regular inspections and maintenance of the container hinges are necessary, and sealant needs to be reapplied when necessary. On the one hand, this leads to increased labor and material costs; on the other hand, since the sealant needs to cure before it becomes effective, the container cannot be used normally during this period, resulting in a decrease in container utilization efficiency; furthermore, even with regular inspections and reapplied sealant, corrosion cannot be completely prevented.

[0049] To address the aforementioned technical challenges in the existing technology, the present invention provides a first slot 9 at the first side 71 of the lower surface of the hinge plate fixing part 5. Sealant is injected through the first slot 9 into the space between the container hinge plate and the container door 12 to achieve a seal, effectively preventing seawater from entering and corroding the space between the hinge plate and the door 12. For a detailed description of the present invention, please refer to Embodiments 1-5 below.

[0050]

Example 1

[0051] Figures 2-1 to 2-4 The following are, in sequence, a perspective view, a bottom view, a side view, and a rear view of the hinge plate structure of Embodiment 1 of this utility model. From front to rear, it includes the following parts: bushing 1, first bent portion 2, connecting portion 3, second bent portion 4, and fixing portion 5. The hinge plate structure of Embodiment 1 of this utility model is generally similar to the hinge plate in the prior art; the similarities will not be repeated here. The difference between the hinge plate structure of Embodiment 1 and the prior art is that a first slot 9 is provided on the first side 71. The specific position of the first slot 9 on the first side 71 can be arbitrarily selected. Preferably, the first slot 9 is located in the middle of the first side 71, which facilitates the injection of sealant and makes the injected sealant more uniform. The first slot 9 communicates with both the external space and the recess 6.

[0052] Figure 2-5 This is a three-dimensional schematic diagram of the hinge plate after it is welded to the door 12 in Embodiment 1. It can be seen that after welding, a cavity is formed between the recess 6 and the door 12.

[0053] Figure 2-6 This is a three-dimensional schematic diagram of the hinge plate of Embodiment 1 after it has been welded to the door 12 and sealant has been injected through the first slot 9. Figure 2-6 As shown, after the hinge plate is welded to the door 12, sealant can be injected into the cavity formed between the recess 6 and the door 12 through the specially designed first slot 9, so that the sealant fills the cavity. After solidification, a sealing effect is achieved on the contact surface between the inner edge of the recess 6 and the door 12, effectively preventing seawater from entering the cavity and causing corrosion.

[0054] Furthermore, since there may be tiny gaps (gaps) between the lower surface of the fixing part 5 and the surface that contacts the door 12 after welding, sealant can be injected into these gaps to fill them, further ensuring the internal sealing effect and preventing corrosion caused by seawater intrusion.

[0055] Meanwhile, the beneficial technical effect of Embodiment 1 is that, compared to the previous method of only applying sealant to the external surface of the welded joint, Embodiment 1 injects the sealant into the internal cavity through the first slot 9. This effectively avoids the sealant aging or falling off due to oxidation, seawater corrosion, external forces, etc., thus preventing loss of sealing effect. It greatly maintains the sealing effect of the sealant even after long-term use, thereby improving the service life and stability of the container door 12 and hinge plate, reducing the frequency of regular inspections by staff, reducing workload, and improving transportation efficiency. Furthermore, the first slot 9 also reduces the amount of hinge plate material used, lowering manufacturing costs.

[0056] Furthermore, multiple first slots 9 can be provided on the first side 71, such as two or three, which can achieve the effect of injecting sealant into the cavity and filling it completely, thus solving the corresponding technical problems. Moreover, since the hinge plate and the door 12 are usually not welded at the first side 71, providing first slots 9 on the first side 71 for injecting sealant is appropriate and convenient. This will not affect the complexity of the process when installing the hinge plate onto the door 12, nor will it affect the firmness of the weld fixation.

[0057] It should be noted that although the recess 6 in Embodiment 1 is a quadrilateral groove located in the middle of the lower surface of the fixing part 5, this shape is only an example and illustration. In reality, the recess 6 is not necessarily in the shape of a quadrilateral groove located in the middle of the lower surface of the fixing part 5. Figure 2-1 The quadrilateral groove shape shown is formed. Any shape of recess 6, as long as it can communicate with the first slot 9 and allow sealant to be injected into the recess 6 through the first slot 9, can achieve the technical effect of this utility model and solve the corresponding technical problem.

[0058]

Example 2

[0059] The hinge plate of Embodiment 2 of this utility model has an overall structure similar to that of the hinge plate of Embodiment 1, and the similarities will not be repeated. The difference between the hinge plate of Embodiment 2 and the hinge plate of Embodiment 1 is that the lower surface of the fixing part 5 of the hinge plate of Embodiment 2 does not have a recess 6, that is, the lower surface of the fixing part 5 is a basically flat plane.

[0060] For the hinge plate of Embodiment 2, even without the recess 6, the sealing problem can still be solved by providing a first slot 9 on the first side 71. Specifically, as mentioned above, even if the lower surface of the hinge plate fixing part 5 is flat and there is no recess 6, although there is no obvious cavity between the two after welding with the door 12, there are still tiny gaps. The first slot 9 provided at the first side 71 of the hinge plate of this utility model can play a guiding and drainage role. The sealant can be injected into the tiny gaps between the hinge plate and the door 12 through the first slot 9, filling these gaps. After the sealant solidifies, corrosion caused by seawater or other substances entering the gaps can be avoided.

[0061] Meanwhile, in conjunction with Embodiments 1 and 2, after the hinge plate of this utility model is welded to the box door 12, a certain space will be formed between the hinge plate and the box door 12. That is, the "space between the hinge plate and the box door 12" referred to in this utility model includes both cavities (when there is a recess 6) and gaps and gaps (when there is no recess 6).

[0062]

Example 3

[0063] Figures 3-1 to 3-2 The following are, in order, a perspective view and a bottom view of the hinge plate structure of Embodiment 3 of this utility model. From the front end to the rear end, it includes the following parts: bushing 1, first bending part 2, connecting part 3, second bending part 4, and fixing part 5. The hinge plate structure of Embodiment 3 of this utility model is generally similar to the hinge plate in Embodiment 1, and the similarities will not be repeated here. The difference between the hinge plate structure of Embodiment 3 and that of Embodiment 1 is that a surrounding groove 10 is provided around the recess 6 on the lower surface of the fixing part 5. The surrounding groove 10 includes a first side groove 101, a second side groove 102, a third side groove 103, and a fourth side groove 104. The first side groove 101 is formed between the first side edge 71 and the first protruding ridge 81, the second side groove 102 is formed between the second side edge 72 and the second protruding ridge 82, the third side groove 103 is formed between the third side edge 73 and the third protruding ridge 83, and the fourth side groove 104 is formed between the fourth side edge 74 and the fourth protruding ridge 84. The first side groove 101, the second side groove 102, the third side groove 103, and the fourth side groove 104 are interconnected.

[0064] Furthermore, the surrounding groove 10 is connected to the first slot hole 9.

[0065] Figure 3-3 This is a three-dimensional schematic diagram of the hinge plate after it is welded to the door 12 in embodiment 3. It can be seen that after welding, a cavity is formed between the recess 6 and the door 12.

[0066] Figure 3-4 This is a three-dimensional schematic diagram of the hinge plate of embodiment 3 after it has been welded to the door 12 and sealant has been injected through the first slot 9. Figure 3-4 As shown, after the hinge plate is welded to the door 12, sealant can be injected into the cavity formed between the recess 6 and the door 12 through the specially designed first slot 9, filling the cavity with sealant. After the cavity is filled, more sealant is injected. Since the surrounding groove 10 is connected to the first slot 9, the sealant enters the surrounding groove 10 through the first slot 9 and continues to fill the surrounding groove 10 until it is completely filled. After the sealant solidifies, the sealant in the surrounding groove 10 forms an additional tight sealing ring, achieving a better sealing effect and providing a double seal. Compared to Embodiment 1, this more effectively prevents seawater from entering the cavity and causing corrosion.

[0067] Furthermore, similar to Embodiment 1, since there may be tiny gaps (gaps) between the lower surface of the fixing part 5 and the surface that contacts the door 12 after welding, sealant can be further injected into these gaps to fill them, further ensuring the internal sealing effect and preventing corrosion caused by seawater intrusion.

[0068] Meanwhile, the hinge plate in Embodiment 3 further reduces the amount of material required by setting the surrounding groove 10, thereby reducing the product manufacturing cost.

[0069]

Example 4

[0070] The hinge plate structure of Embodiment 4 of this utility model is generally similar to that of the hinge plate in Embodiment 3, and the similarities will not be repeated here. The difference between the hinge plate of Embodiment 4 and Embodiment 3 is that the lower surface of the hinge plate fixing part 5 in Embodiment 4 only includes a surrounding groove 10 at the perimeter, and does not have a quadrilateral groove in the center of the lower surface. After the hinge plate of Embodiment 4 is welded to the door 12, the sealant injected through the first slot 9 will enter the surrounding groove 10 and continue to fill it until it is completely filled. After the sealant solidifies, the sealant in the surrounding groove 10 can form a tight sealing ring, achieving a sealing effect and preventing seawater from entering the cavity and causing corrosion.

[0071] Meanwhile, the hinge plate in Embodiment 4 further reduces the amount of material required by setting the surrounding groove 10, thereby reducing the product manufacturing cost.

[0072]

Example 5

[0073] Figures 4-1 to 4-2The following are, in sequence, a perspective view and a bottom view of the hinge plate structure of Embodiment 5 of this utility model. From front to rear, it includes the following parts: bushing 1, first bent portion 2, connecting portion 3, second bent portion 4, and fixing portion 5. The hinge plate structure of Embodiment 5 of this utility model is generally similar to the hinge plate in Embodiment 3, and the similarities will not be repeated here. The difference between the hinge plate structure of Embodiment 5 and that of Embodiment 3 is that a second slot 11 is provided on the second side 72. The specific position of the second slot 11 on the second side 72 can be arbitrarily selected. Preferably, the second slot 11 is located in the middle of the second side 72, which allows for more uniform injection of sealant. The second slot 11 communicates with both the surrounding groove 10 and the recess 6.

[0074] Figure 4-3 This is a three-dimensional schematic diagram of the hinge plate after it is welded to the door 12 in embodiment 3. It can be seen that after welding, a cavity is formed between the recess 6 and the door 12.

[0075] Figure 4-4 This is a three-dimensional schematic diagram of the hinge plate of embodiment 5 after it has been welded to the door 12 and sealant has been injected through the first slot 9. Figure 4-4 As shown, after the hinge plate is welded to the door 12, sealant can be injected into the cavity formed between the recess 6 and the door 12 through the specially designed first slot 9, filling the cavity with sealant. After the cavity is filled, more sealant is injected. Since the surrounding groove 10 is connected to both the first slot 9 and the second slot 11, the sealant enters the surrounding groove 10 simultaneously through both slots 9 and 11, continuing to fill the groove until it is completely filled. After the sealant solidifies, it forms an additional tight sealing ring within the groove 10, achieving a better sealing effect and providing a double seal. Compared to Embodiment 1, this more effectively prevents seawater from entering the cavity and causing corrosion.

[0076] Meanwhile, compared with the hinge plate structure of Embodiment 3, the hinge plate of Embodiment 5, through the second slot 11 provided on the second side 72, allows the sealant to be injected into the surrounding groove 10 at a faster speed when the sealant is injected, and the sealant fills the surrounding groove 10 better, thereby improving the sealing effect of the sealing ring formed after the sealant solidifies.

[0077] Meanwhile, the hinge plate of Embodiment 5 further reduces the amount of material required by setting the second slot 11, thereby reducing the product manufacturing cost.

[0078] The embodiments described in this specification are merely preferred embodiments of the present invention. These embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of the present invention. All technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation should be within the scope of the present invention.

Claims

1. A hinge plate for a container, comprising a bushing, a first bent portion, a connecting portion, a second bent portion, and a fixing portion; wherein, The portion of the bushing near the rear end is connected to the portion of the first bent portion near the front end; the portion of the first bent portion near the rear end is connected to the portion of the connecting portion near the front end; the portion of the connecting portion near the rear end is connected to the portion of the second bent portion near the front end; and the portion of the second bent portion near the rear end is connected to the portion of the fixing portion near the front end; characterized in that, wherein, The lower surface of the fixing part includes a first side, a second side, a third side and a fourth side. The first side is located at the front end of the lower surface of the fixing part, the second side is located at the rear end of the lower surface of the fixing part, and the third side and the fourth side are located on the left and right sides of the lower surface of the fixing part, respectively. The first side includes a first slot; Sealant is injected into the space between the container hinge plate and the container door through the first slot to achieve a seal.

2. The hinge plate for containers according to claim 1, characterized in that, The lower surface of the fixing part includes a recess; The first slot is connected to the recess.

3. The hinge plate for containers according to claim 2, characterized in that, The recess is a groove, and the groove is located at the middle position of the lower surface of the fixing part; A first convex ridge is formed between the groove and the first side, a second convex ridge is formed between the groove and the second side, a third convex ridge is formed between the groove and the third side, and a fourth convex ridge is formed between the groove and the fourth side.

4. The hinge plate for containers according to claim 2, characterized in that, The recess is a surrounding groove, which is located around the lower surface of the fixing part; The surrounding trench includes a first side trench, a second side trench, a third side trench, and a fourth side trench; the first side trench, the second side trench, the third side trench, and the fourth side trench are interconnected.

5. The hinge plate for a container according to claim 3, characterized in that, The recess also includes a surrounding groove; The surrounding trench includes a first side trench, a second side trench, a third side trench, and a fourth side trench; The first side groove is formed between the first side edge and the first protruding edge, the second side groove is formed between the second side edge and the second protruding edge, the third side groove is formed between the third side edge and the third protruding edge, and the fourth side groove is formed between the fourth side edge and the fourth protruding edge. The first side groove, the second side groove, the third side groove, and the fourth side groove are interconnected; Furthermore, the first slot is connected to both the surrounding groove and the recess.

6. The hinge plate for a container according to claim 5, characterized in that, The second side includes a second slot, which is connected to both the surrounding groove and the recess.

7. The hinge plate for a container according to claim 6, characterized in that, The second slot is located in the middle of the second side.

8. The hinge plate for a container according to any one of claims 1-7, characterized in that, The first slot is located in the middle of the first side.

9. A container, characterized in that, Includes the container hinge plate according to any one of claims 1-7; wherein, The container hinge plate is fixedly installed on the container door; After the container hinge plate is fixedly installed on the container door, sealant is injected through the first slot.

10. A container, characterized in that, Includes the container hinge plate as described in claim 8; wherein, The container hinge plate is fixedly installed on the container door; After the container hinge plate is fixedly installed on the container door, sealant is injected through the first slot.

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