A bag for unloading containers

By setting lifting ropes and through holes at the bottom of the container bag, and using a forklift, the bag can be turned inside out for unloading. This solves the problems of incomplete unloading and limited use of existing container bags, provides a safe and reliable unloading method, and increases air permeability, making it suitable for transporting various materials and composting fermentation.

CN224410247UActive Publication Date: 2026-06-26SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Filing Date
2025-08-29
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing container bags have problems such as incomplete unloading, difficulty in cleaning residues, the need for a special unloading platform, uneven distribution of lifting straps affecting balance, and short service life, especially for materials with high moisture or viscosity, and they lack air permeability.

Method used

Design an externally folding unloading container bag. By setting a lifting rope at the center of the bottom of the bag, the bag can be flipped over using the forks of a regular forklift. Combined with through holes and wear-resistant rings at the bottom, and corrugated pipes with ventilation holes on the outside, the bag can be completely unloaded safely and reliably, and is suitable for the ventilation requirements of composting units.

Benefits of technology

It enables complete unloading with ordinary forklifts, ensuring safety and reliability, extending service life, and is suitable for multiple scenarios. It also has a breathable function to meet the needs of composting and fermentation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an outside turn over unloading container bag, including bag body, sling and lifting rope, the edge department of bag body top opening is equipped with a plurality of sling, the end of lifting rope is connected in the central position of bag body inner bottom, and its main part extends upwards and forms annular structure. The utility model discloses a lifting rope is arranged in the central position of bag body inner bottom, when unloading, using the fork arm of ordinary forklift to hook the lifting rope and pull up, can make the bag body outside turn over, pour out the material in the bag, and unload completely, and also convenient to clean the material remaining on the inner wall of bag body, and unloading is simple, efficient and safe and reliable.
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Description

Technical Field

[0001] This utility model relates to the field of container bag technology, and in particular to an externally folding unloading container bag. Background Technology

[0002] FIBCs, also known as flexible FIBCs, ton bags, or space bags, can be used with lifting equipment to achieve unitized transportation. They are suitable for transporting various bulk and granular materials and are widely used in the transportation packaging of food, grains, pharmaceuticals, chemicals, and mineral products.

[0003] In the prior art, such as the container bag that is easy to flip disclosed in patent CN215754990U, a lifting strap is set at the bottom as a flipping structure, which is used in conjunction with lifting equipment to achieve flipping; another example is the container bag for an automatic unloading and recycling device disclosed in patent CN208603058U, in which the side wall or bottom of the container bag is sewn with a fixing strap, and the container bag is suspended to the unloading platform by lowering the fixing strap, so that the container bag is tilted to achieve unloading.

[0004] The aforementioned FIBC structures all achieve unloading by tilting the FIBC. However, this approach has several drawbacks. First, it may result in incomplete unloading, especially for materials with high moisture or viscosity, which can leave residue on the inner wall of the FIBC and be difficult to clean. Second, it requires a specialized unloading platform; one mechanism suspends the FIBC with straps, while another tilts it, making it unloading impossible with ordinary forklifts and limiting its application. Third, the evenness of the strap distribution significantly affects the balance during tipping; uneven distribution can cause the FIBC to sway during tipping, posing a safety hazard due to its weight. Fourth, friction between the FIBC and the ground during tipping and dragging can damage the bag, shortening its lifespan.

[0005] In addition, some container bags, when used as composting units, contain fermentation materials and must have a certain degree of air permeability to ensure that the materials can undergo aerobic fermentation. After fermentation, the materials are poured out. However, existing container bags do not have this air permeability function.

[0006] In conclusion, the existing structure of container bags still needs improvement. Utility Model Content

[0007] To solve the above problems, this utility model provides an outward-folding unloading container bag, including a bag body, lifting straps and a lifting rope. Multiple lifting straps are provided at the edge of the top opening of the bag body, and the end of the lifting rope is connected to the center of the bottom of the bag body, and its main body extends upward to form a ring structure.

[0008] Furthermore, the lower end of the lifting rope is sewn to the bottom of the bag, and the upper end extends upward and is knotted to form a loop structure.

[0009] Furthermore, four through holes are provided at the center of the bottom of the bag. The two ends of the lifting rope pass through two of the through holes from the top of the bag bottom, are knotted at the bottom of the bag bottom, and then pass back into the bag body through the other two through holes. The two ends of the lifting rope are also knotted to form a ring structure.

[0010] Furthermore, the four through holes are arranged in a square or rhomboid pattern.

[0011] Furthermore, a wear-resistant ring is embedded inside each of the through holes.

[0012] Furthermore, a corrugated tube is sleeved longitudinally on the outer side of the lifting rope, and several ventilation holes are provided on the outer wall of the corrugated tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention features a lifting rope at the center of the bottom of the bag. During unloading, the bag can be flipped over by hooking the rope with the fork arm of a regular forklift and pulling upwards, thus emptying the material inside. This ensures thorough unloading and also facilitates cleaning of any remaining material on the inner wall of the bag. The unloading process is simple, efficient, safe, and reliable. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of the local structure at point A;

[0019] Figure 4 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model;

[0020] Figure 5 This is a partial top view of Embodiment 3 of the present invention;

[0021] Figure 6 for Figure 5 Enlarged view of the local structure at point B;

[0022] Figure 7This is a partial bottom view of Embodiment 3 of the present invention;

[0023] Figure 8 for Figure 7 Enlarged view of the local structure at point C;

[0024] Figure 9 This is a schematic diagram illustrating the working principle of this utility model;

[0025] Figure 10 This is a schematic diagram of the overall structure of Embodiment 4 of this utility model;

[0026] Figure 11 for Figure 10 Enlarged view of the local structure at point D.

[0027] Figure label:

[0028] 1-Bag body, 2-Sling, 3-Lifting rope, 4-Polyester reinforcing sheet, 5-Through hole, 6-Abrasion-resistant ring, 7-Corrugated tube, 8-Ventilation hole. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0032] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Example 1:

[0034] like Figure 1 As shown, the outward-folding unloading container bag in this embodiment includes a bag body 1, lifting straps 2, and a lifting rope 3. Multiple lifting straps 2 are provided at the edge of the top opening of the bag body 1. The lower end of the lifting rope 3 is connected to the center of the bottom of the bag body 1, and the upper end extends upward and is knotted to form a ring structure.

[0035] The lifting rope 3 can be made of materials such as nylon rope, polyester rope, or polyester fiber rope. The lower end of the lifting rope 3 is sewn to the bottom of the bag body 1. Specifically, during sewing, the lower end of the lifting rope 3 can be sewn together with the reinforcing ribs that are built into the bottom of the bag body 1. The reinforcing ribs are usually woven from polypropylene or polyethylene, which have high strength and can achieve a stable connection of the lifting rope 3.

[0036] Example 2:

[0037] like Figure 2-3 As shown, the outward-folding unloading container bag in this embodiment includes a bag body 1, lifting straps 2 and a lifting rope 3. Multiple lifting straps 2 are provided at the edge of the top opening of the bag body 1. The two ends of the lifting rope 3 are connected to the center of the bottom of the bag body 1, and its main body extends upward to form a ring structure.

[0038] The two ends of the pull rope 3 are sewn onto the bottom inside the bag body 1. Specifically, during the sewing process, a polyester reinforcing sheet 4 is used to press the ends of the pull rope 3 onto the bottom of the bag, and then a three-thread sewing process is used to fix the ends of the pull rope 3 to the bottom of the bag.

[0039] Example 3:

[0040] like Figure 4-8 As shown, in this embodiment, the outward-folding unloading container bag has four through holes 5 at the center of the bottom of the bag body 1. The two ends of the lifting rope 3 pass through two of the through holes 5 from the upper side of the bottom of the bag, are knotted on the lower side of the bottom of the bag, and then pass back into the bag body 1 through the other two through holes 5. The two ends of the lifting rope 3 are also knotted to make the main body of the lifting rope 3 form a ring structure.

[0041] The four through holes 5 are arranged in a square or rhombus shape to ensure that the bottom of the bag body 1 is evenly stressed when it is lifted. Each through hole 5 is fitted with a wear-resistant ring 6, which can be made of smooth rubber, plastic or metal material to reduce wear between the lifting rope 3 and the through hole 5, thereby extending the service life of the lifting rope 3.

[0042] like Figure 9 As shown, during unloading, the forks of a regular forklift are inserted into the annular lifting rope 3, and then the forks are lifted upwards. Under the action of the lifting rope 3, the forks are pulled upwards to the bottom of the bag, while the bag body 1 does not move with the forks due to the gravity of the material. As the lifting rope 3 continues to move upwards, the material inside the bag body 1 will overflow from the bag opening until the entire bag body 1 is completely turned outwards, thus achieving unloading.

[0043] This unloading method can be achieved using a regular forklift, making it suitable for a wide range of applications. It is simple, efficient, safe, and reliable. Because unloading is done by turning the bag body 1 outwards, it ensures thorough unloading and facilitates cleaning of any remaining material on the inner wall of the bag. Furthermore, the bottom of the bag body 1 does not rub against the ground, thus extending the lifespan of the container bag.

[0044] Example 4:

[0045] like Figure 10-11 As shown, in this embodiment, the outer-turning unloading container bag has a corrugated tube 7 sleeved longitudinally on the outside of the lifting rope 3, and the outer wall of the corrugated tube 7 is provided with several ventilation holes 8.

[0046] When used as a composting unit, the corrugated pipe 7 and the vent 8 can provide ventilation, allowing outside air to enter the bag body 1 through the corrugated pipe 7 and the vent 8, providing sufficient oxygen for the fermentation material.

[0047] The bag 1 in the above embodiments can be the container bag specified in the national standard GB / T10454-2000, or other existing technologies in the field.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

Claims

1. An outward-opening unloading container bag, characterized in that: It includes a bag body, straps, and a pull rope. Multiple straps are provided at the edge of the top opening of the bag body. The end of the pull rope is connected to the center of the bottom of the bag body, and its main body extends upward to form a ring structure.

2. The outward-opening unloading container bag according to claim 1, characterized in that: The lower end of the pull rope is sewn to the bottom of the bag, and the upper end extends upward and is knotted to form a loop structure.

3. The outward-opening unloading container bag according to claim 1, characterized in that: The bag body has four through holes at the center of the bottom. The two ends of the lifting rope pass through two of the through holes from the top of the bag bottom, are knotted at the bottom of the bag bottom, and then pass back into the bag body through the other two through holes. The two ends of the lifting rope are also knotted to make the main body of the lifting rope form a ring structure.

4. The outward-opening unloading container bag according to claim 3, characterized in that: The four through holes are arranged in a square or rhomboid shape.

5. The outward-opening unloading container bag according to claim 3, characterized in that: A wear-resistant ring is embedded inside each of the through holes.

6. The outward-opening unloading container bag according to any one of claims 1-5, characterized in that: The outer side of the lifting rope is fitted with a corrugated tube along the longitudinal direction, and the outer wall of the corrugated tube is provided with several ventilation holes.

Citation Information

Patent Citations

  • Automatic unload and dedicated flexible container of recovery unit

    CN208603058U