Container lining bag assembly, container assembly and railway transportation system

By designing a three-dimensional support frame and reinforcing belt structure for the container liner bag assembly, the problem of easy breakage of the container liner bag during unloading was solved, achieving bag stability and convenient installation, and improving transportation safety and protection.

CN224159789UActive Publication Date: 2026-04-24ZHONGHUAI CONTAINER EQUIP TECH (TIANJIN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGHUAI CONTAINER EQUIP TECH (TIANJIN) CO LTD
Filing Date
2025-06-05
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

The inner lining bags of containers are prone to breakage during unloading and are inconvenient to install and carry, leading to powder leakage and posing a safety hazard.

Method used

Design a container inner liner bag assembly, which adopts a three-dimensional support frame formed by front and rear fabric pieces and transverse ring reinforcement straps, combined with a three-dimensional constraint system of top transverse rings, middle transverse rings and vertical straps, and is connected to the rope loops inside the container by reinforcement straps to strengthen the fixing structure of the fabric and tarpaulin, and set diagonal straps and top straps to stabilize the shape of the bag, and uses a detachable fixing method for easy replacement.

Benefits of technology

It significantly improves the bag's resistance to expansion, prevents rupture during unloading, ensures smooth material discharge, prevents wind tearing, provides rain and snow protection, and supports quick installation and replacement of reinforcing belts.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a container lining bag assembly, a container assembly and a railway transportation system. The container lining bag assembly comprises a bag body, reinforcing cloth and reinforcing belts. The reinforcing cloth comprises a front cloth piece, a rear cloth piece and a bottom cloth piece, and at least one discharging opening capable of being closed is formed in the front cloth piece. The container assembly comprises the open top container and the container lining bag assembly. The railway transportation system comprises a freight train and the container assembly, the freight train comprises a plurality of freight flat cars, and the container assembly is fixed on the freight flat cars. A three-dimensional supporting frame is formed by the front cloth piece, the rear cloth piece and the transverse ring body reinforcing belts, a three-dimensional restraint system with the top transverse ring body, the middle transverse ring body and the vertical belts is combined, the expansion resistance of the bag body is remarkably improved, particularly, after a container door is opened during discharging, the lateral pressure of powder on the bag wall during discharging is effectively dispersed, and the powder is prevented from being broken. And the bag expansion fracture risk is reduced.
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Description

Technical Field

[0001] This utility model relates to a container inner liner bag assembly, a container assembly, and a railway transportation system, belonging to the technical field of railway transportation systems. Background Technology

[0002] Container liners are large, flexible packaging containers used to protect bulk cargo from contamination, moisture, or damage during transportation. They are typically placed inside standard shipping containers and are commonly made of plastics such as polyethylene (PE) and polypropylene (PP). The structural design of container liners usually includes an opening at the top near the door, allowing cargo to be filled from the top of the container (gravity or mechanical filling) or horizontally (conveyor belt or horizontal pneumatic filling). A discharge port (such as a valve or cutting opening) is located at the bottom for quick unloading. When container liners are used to transport powder, the powder is filled into the liner, which is supported by the container side walls and doors. However, during unloading, the container doors need to be opened. Without the door's support, the liner can easily swell, potentially rupturing and causing the powder to spill out, resulting in injury. Current solutions involve placing 5-6 square tubes horizontally at the container door to block the liner. However, these tubes are difficult to install, inconvenient to carry when the container is empty, and easily lost. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a container inner liner bag assembly with high structural strength, which can effectively prevent the bag from breaking during unloading and is easy to quickly hang and install, as well as a container assembly and railway transportation system having the container inner liner bag assembly.

[0004] To achieve the above objectives, this utility model provides a container inner liner bag assembly, comprising a bag body, reinforcing fabric, and reinforcing straps. The reinforcing fabric includes a front fabric piece, a rear fabric piece, and a bottom fabric piece. The front and rear fabric pieces form a receiving space to accommodate the bag body, and the bottom fabric piece supports the bag body. The reinforcing straps are integrally connected to the reinforcing fabric. The reinforcing straps include transverse loops that wrap around the bag body and are fixedly connected to the front and rear fabric pieces. The transverse loops include a top transverse loop connected to the top of the front and rear fabric pieces and a middle transverse loop located below the top transverse loop. The reinforcing straps also include vertical straps located on the left and right sides of the bag body and connecting the top transverse loop, the middle transverse loop, and the bottom fabric piece. Multiple first hooks for connecting to the container are provided on the top transverse loop. At least one closable unloading port is provided on the front fabric piece.

[0005] The reinforcing band also includes multiple top bands disposed above the bag body. The two ends of the top bands are respectively connected to the two sides of the top horizontal ring, and the top bands are detachably fixed to the top surface of the bag body.

[0006] The left and right side walls of the bag are detachably fixed to the reinforcing strip.

[0007] The front fabric panel is also provided with at least one diagonal strap, the end of which extends outward from the front fabric panel, and the end of the extension is provided with a second hook for connecting to a container.

[0008] A tarpaulin is also provided above the accommodating space, and the reinforcing belt also includes multiple tarpaulin reinforcing belts provided on the tarpaulin, with traction components for connecting to the outer wall of the container at the ends of the tarpaulin reinforcing belts.

[0009] The left and right sides of the front fabric piece are respectively connected to a left bend and a right bend.

[0010] Multiple connecting straps are also provided on the top horizontal ring, and the connecting straps are connected to the tarpaulin.

[0011] The tarpaulin has a window opening in the middle, and at least a portion of the tarpaulin reinforcing strips cross the window opening and are detachably fixed to the top surface of the bag.

[0012] The edge of the window is sealed to the top surface of the bag.

[0013] The discharge port is sealed by a zipper, Velcro fastener, or drawstring bag closure.

[0014] At least one sealing opening is provided at the top of the bag.

[0015] This utility model also provides a container assembly, including an open-top container and a container inner liner assembly as described above.

[0016] This utility model also provides a railway transportation system, including a freight train and a container assembly as described above, wherein the freight train includes a plurality of freight flatcars and the container assembly is disposed on the freight flatcars.

[0017] By adopting the above technical solution, the container inner liner bag assembly, container assembly, and railway transportation system of this utility model have the following beneficial effects compared with the prior art:

[0018] 1. A three-dimensional support frame is formed by the front and rear fabric panels and the transverse reinforcing rings. Combined with a three-dimensional constraint system of top transverse rings, middle transverse rings, and vertical bands, the bag's anti-expansion capability is significantly improved. On the one hand, when the container door is opened during unloading, the lateral pressure of the powder on the bag wall is effectively dispersed, reducing the risk of bag rupture. On the other hand, the material exerts friction on the bag during unloading, tending to drag the entire inner bag out of the container. Therefore, the reinforcing bands are connected to the rope loops inside the container for reinforcement, preventing the entire inner bag from being dragged out of the container during unloading. In addition, during high-speed train travel, wind force can tear and damage the top of the bag. The reinforcing bands, through a crisscross arrangement, fix the bag in a grid-like manner, effectively preventing wind tearing damage to the top of the bag.

[0019] 2. The diagonal strap and the second hook of the extension section form an oblique tension structure to prevent the front fabric from bulging outward and deforming when the unloading port is opened, thus maintaining the stability of the bag shape.

[0020] 3. A top strap is installed at the top of the bag, which is fixed to the top surface of the bag and can lift the bag. When the top ring is suspended to the inner wall of the container via the first hook, the bag will naturally stand up, facilitating the filling of powder into the bag. In addition, a sealed connection (e.g., adhesive) is formed between the edge of the window and the top surface of the bag to effectively prevent rain and snow from entering the container during the rainy and snowy seasons.

[0021] 4. A tarpaulin is installed on the top of the open-top container, and the tarpaulin is reinforced and fixed to the rope loops on the outer wall of the container, which can effectively protect against rain and snow during rail transport.

[0022] 5. The reinforcing straps are attached to the bag body in a detachable manner, such as by adhesive. This allows for replacement of the bag body if it is damaged, and the reinforcing straps and reinforcing fabric can be reused.

[0023] 6. Left and right bends are added to the front fabric to enhance lateral wrapping. After the bag is filled with powder, the left and right bends will be squeezed and pressed tightly against the inner wall of the container, thereby improving the front fabric's resistance to expansion. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a first embodiment of the container component in this utility model.

[0025] Figure 2 This is a schematic diagram of the container inner liner bag assembly in Example 1.

[0026] Figure 3 This is an exploded view of the container inner liner bag assembly in Embodiment 1.

[0027] Figure 4This is a schematic diagram of the structure of a second embodiment of the container component in this utility model.

[0028] Figure 5 This is a schematic diagram of the container inner liner bag assembly in Example 2.

[0029] Figure 6 This is an exploded view of the container inner liner bag assembly in Example 2.

[0030] Figure 7 This is a schematic diagram of the reinforcing fabric, reinforcing belt, and tarpaulin in Example 2.

[0031] Figure 8 This is a schematic diagram of the structure in which the bag body and the reinforcing strip are fixed together by adhesive.

[0032] Figure 9 This is a schematic diagram of the structure in which the bag body and the reinforcing strip are fixed together by adhesive tape. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1:

[0035] like Figures 1-3 As shown, this utility model provides a container assembly, including an open-top container 1 and a container inner liner assembly 2.

[0036] The container inner liner bag assembly 2 includes a bag body 21, reinforcing fabric, and reinforcing straps. The reinforcing fabric includes a front fabric piece 221, a rear fabric piece 222, and a bottom fabric piece 223. A receiving space is formed between the front and rear fabric pieces 221 to accommodate the bag body 21, and the bottom fabric piece 223 supports the bag body 21. A left bend 224 and a right bend 225 are respectively connected to the left and right sides of the front fabric piece 221. The reinforcing straps are integrally connected to the reinforcing fabric, and the reinforcing straps include a transverse loop that wraps around the bag body 21 laterally and a longitudinal loop 24 that wraps around the bag body 21 longitudinally. The transverse loop is fixedly connected to the front and rear fabric pieces 221, and the longitudinal loop 24 is connected to the bottom fabric piece 223.

[0037] The transverse ring includes a top transverse ring 231 connected to the top of the front fabric piece 221 and the rear fabric piece 222, and a middle transverse ring 232 located below the top transverse ring 231. The vertical portion of the longitudinal ring 24 is a vertical strap 241, which is located on the left and right sides of the bag body 21 and connects the top transverse ring 231, the middle transverse ring 232, and the bottom fabric piece 223. Multiple first hooks 251 for connecting to the inner wall of the open-top container 1 are provided on the top transverse ring 231 at the node where it connects to the vertical strap 241.

[0038] The front fabric piece 221 is also provided with multiple diagonal straps 26, the ends of the diagonal straps 26 forming extension sections 261 on the outer side of the front fabric piece 221, and the ends of the extension sections 261 are provided with second hooks 252 for connecting containers.

[0039] A closable discharge port 27 is provided at the lower part of the front fabric piece 221, and the discharge port 27 can be closed by a zipper or Velcro fastener. At least one tieable filling port 210 is provided at the top of the bag body 21.

[0040] The portion of the longitudinal ring 24 located above the bag body 21 is a top band 242, which is detachably fixed to the top surface of the bag body 21. Furthermore, the left and right side walls of the bag body 21 can also be detachably fixed to the reinforcing band 20, for example, by adhesive bonding. Figure 8 As shown, an adhesive layer 201 is applied to the reinforcing strip 20 and bonded to the bag body 21; or it is fixed by means of adhesive tape, such as... Figure 9 As shown, after covering the reinforcing strip 20 with tape 202 that is wider than the reinforcing strip 20, the portion of tape 202 that extends beyond the width of the reinforcing strip 20 is then adhered to the bag body 21.

[0041] Example 2:

[0042] like Figures 4-7 As shown, in this embodiment, a tarpaulin 28 is also provided above the accommodating space. The reinforcing belt also includes multiple tarpaulin reinforcing belts 281 provided on the tarpaulin 28. The ends of the tarpaulin reinforcing belts 281 are provided with traction members 282 for connecting to the outer wall of the open-top container 1. The traction members can be binding ropes.

[0043] Multiple connecting straps 231a are also provided on the top horizontal ring 231. The top ends of the connecting straps 231a are glued and fixed to the tarpaulin 28, so that the tarpaulin 28, the reinforcing cloth, and the reinforcing straps form an integral structure.

[0044] The tarpaulin 28 has a window 280 in the middle, through which the filling port 210 at the top of the bag 21 can protrude. At least a portion of the tarpaulin reinforcing straps 281 cross the window 280 and are detachably fixed to the top surface of the bag 21, thereby lifting the bag 21 so that it can be upright to facilitate the filling of powder into it through the filling port 210. The edge of the window 280 forms a sealed connection with the top surface of the bag 21, for example, by adhesive tape, thereby effectively preventing rain and snow from entering the container during rainy and snowy seasons.

[0045] This utility model also provides a railway transportation system, including a freight train (not shown in the figure) and a container assembly as described above, wherein the freight train includes a plurality of freight flatcars and the container assembly is disposed on the freight flatcars.

[0046] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A container inner liner bag assembly, characterized in that: The bag includes a bag body, reinforcing fabric, and reinforcing straps. The reinforcing fabric includes a front fabric piece, a rear fabric piece, and a bottom fabric piece. The front and rear fabric pieces form a receiving space to accommodate the bag body, and the bottom fabric piece supports the bag body. The reinforcing straps are integrally connected to the reinforcing fabric. The reinforcing straps include transverse loops that wrap around the bag body and are fixedly connected to the front and rear fabric pieces. The transverse loops include a top transverse loop connected to the top of the front and rear fabric pieces and a middle transverse loop located below the top transverse loop. The reinforcing straps also include vertical straps located on the left and right sides of the bag body and connecting the top transverse loop, the middle transverse loop, and the bottom fabric piece. Multiple first hooks for connecting containers are provided on the top transverse loops. At least one closable unloading port is provided on the front fabric piece.

2. The container inner liner bag assembly as described in claim 1, characterized in that: The reinforcing band also includes multiple top bands disposed above the bag body. The two ends of the top bands are respectively connected to the two sides of the top horizontal ring, and the top bands are detachably fixed to the top surface of the bag body.

3. The container inner liner bag assembly as described in claim 1, characterized in that: The left and right side walls of the bag are detachably fixed to the reinforcing strip.

4. The container inner liner bag assembly as described in any one of claims 1-3, characterized in that: The front fabric panel is also provided with at least one diagonal strap, the end of which extends outward from the front fabric panel, and the end of the extension is provided with a second hook for connecting to a container.

5. The container inner liner bag assembly as described in any one of claims 1-3, characterized in that: The left and right sides of the front fabric piece are respectively connected to a left bend and a right bend.

6. The container inner liner bag assembly as claimed in claim 1, characterized in that: A tarpaulin is also provided above the accommodating space, and the reinforcing belt also includes multiple tarpaulin reinforcing belts provided on the tarpaulin, with traction components for connecting to the outer wall of the container at the ends of the tarpaulin reinforcing belts.

7. The container inner liner bag assembly as described in claim 6, characterized in that: Multiple connecting straps are also provided on the top horizontal ring, and the connecting straps are connected to the tarpaulin.

8. The container inner liner bag assembly as claimed in claim 6 or 7, characterized in that: The tarpaulin has a window opening in the middle, and at least a portion of the tarpaulin reinforcing strips cross the window opening and are detachably fixed to the top surface of the bag.

9. The container inner liner bag assembly as claimed in claim 8, characterized in that: The edge of the window is sealed to the top surface of the bag.

10. The container inner liner bag assembly as described in any one of claims 1-3, characterized in that: The discharge port is sealed by a zipper, Velcro fastener, or drawstring bag closure.

11. The container inner liner bag assembly as described in any one of claims 1-3, characterized in that: At least one sealing opening is provided at the top of the bag.

12. A container assembly, characterized in that: This includes open-top containers and container liner bag assemblies as described in any one of claims 1-11.

13. A railway transportation system, characterized in that: The system includes a freight train and a container assembly as described in claim 12, wherein the freight train includes a plurality of freight flatcars and the container assembly is disposed on the freight flatcars.