Reinforced container bag with sling structure

Abstract

The utility model discloses a reinforced flexible freight bag with a sling structure, which comprises a bag body, the bag body comprises four side surfaces, the top surface of the bag body is provided with a feed port, the bottom surface of the bag body is provided with a discharge port, the bag body comprises two groups of hard slings which are symmetrically arranged in the bag body, and each group of hard slings penetrates into the bag body from the top surface and vertically extends to the bottom surface along one side surface; after transversely spanning the bottom surface, the U-shaped cross section structure vertically extends and penetrates out of the top surface along the side surface of the other end; each group of hard straps comprises two hard wires, one end, exposed out of the bag body, of each hard wire is respectively connected with the adjacent hard wires in the same group to form a lifting part, a first reinforcing piece is arranged at the joint of each side surface in the bag body and the adjacent side surface, and a second reinforcing piece is arranged on the surface of the bag body. According to the utility model, the internal U-shaped hard sling is adopted to replace a flexible sling. The unique U-shaped structure directly transmits load, eliminates stress concentration caused by sinking of the sling, inhibits deformation of the bag body, improves overall stability and strength, and cooperates with other reinforcers to enhance the effect.

Description

A reinforced sling structure container bag Technical Field

[0001] This utility model relates to the field of FIBC (Flexible Intermediate Bulk Container) with sling structure, and in particular to a reinforced FIBC with sling structure. Background Technology

[0002] As a packaging and transportation tool for bulk materials, the structural strength and lifting safety of FIBCs (Flexible Intermediate Bulk Containers) are crucial. Traditional FIBCs commonly use flexible webbing as lifting straps, which are usually sewn or woven into the bag surface or embedded in the bag's edges. However, this flexible strap structure has significant drawbacks in practical applications: strap sinking and stress concentration: When the bag is fully loaded, the flexible straps tend to "sink" into the bag under gravity, causing a sharp increase in local stress in the contact area between the straps and the bag. This stress concentration is particularly severe at the connection between the bottom and sidewalls, easily causing tearing of the bag fabric or breakage of the seams, which is one of the main causes of FIBC failure. Poor bag deformation and stability: During lifting, the flexible straps do not provide sufficient restraint to the bag, easily leading to irregular bulging or twisting deformation. This not only affects stacking stability and increases transportation risks but also exacerbates the aforementioned stress concentration problem. Lifting efficiency and reliability: Flexible slings may require additional adjustment or auxiliary tools during lifting to ensure that multiple slings are evenly stressed simultaneously. Otherwise, a single sling may overload or slip, affecting lifting efficiency and operational safety. Insufficient structural integrity: Traditional slings mainly rely on stitching to connect to the bag body, resulting in a relatively simple force transmission path and limited improvement in the overall rigidity of the bag body. This makes it difficult to effectively suppress the lateral expansion of the bag body when fully loaded.

[0003] Therefore, there is an urgent need for a new type of sling structure that can effectively solve the problems of stress concentration, bag deformation and structural integrity caused by flexible slings, and significantly improve the load-bearing capacity, lifting safety and service life of FIBCs. Summary of the Invention

[0004] The purpose of this invention is to provide a reinforced sling structure container bag.

[0005] The innovation of this invention lies in replacing the flexible slings with internal U-shaped rigid slings. Its unique U-shaped structure directly transfers the load, eliminates stress concentration caused by sling slippage, suppresses bag deformation, improves overall stability and strength, and works in conjunction with other reinforcing components to enhance the overall effect.

[0006] To achieve the above-mentioned utility model objectives, the technical solution of this utility model is as follows: a reinforced lifting strap structure container bag, comprising a bag body, the bag body having four sides, characterized in that the bag body has an inlet on its top surface and an outlet on its bottom surface, the bag body comprising two sets of rigid lifting straps symmetrically arranged inside the bag body, each set of rigid lifting straps entering the bag body from the top surface, extending vertically along one side surface to the bottom surface, crossing the bottom surface laterally, and then extending vertically along the other side surface to the top surface, forming a U-shaped cross-section structure; each set of rigid lifting straps consists of two rigid wires, the end of the rigid wires protruding from the bag body being connected to an adjacent rigid wire of the same set to form a lifting part, a first reinforcing member being provided at the connection between each side surface inside the bag body and the adjacent side surface, and a second reinforcing member being provided on the surface of the bag body perpendicular to the rigid lifting straps at the bottom surface of the bag body and wrapping the top surface, bottom surface and the side surface without rigid lifting straps of the bag body.

[0007] Furthermore, the bag body comprises, from the inside out: a polyethylene film liner with a thickness of 0.1 mm to 0.3 mm, and a basis weight of 80 g / m³. 2 ~150g / m 2 The main body layer is a polypropylene woven fabric; the rigid filaments of the rigid strap are sandwiched between the polyethylene film liner layer and the main body layer of the polypropylene woven fabric.

[0008] Furthermore, the hard wire is made of galvanized high-carbon steel wire with a diameter of 3mm to 6mm.

[0009] Furthermore, the bottom of the bag body is provided with two No. 3 reinforcing members located on the diagonal lines of the bottom face of the bag body, and the No. 3 reinforcing member is located between the bag body and the No. 2 reinforcing member.

[0010] Furthermore, the first, second, and third reinforcing components are made of nylon webbing.

[0011] Furthermore, the No. 1, No. 2, and No. 3 reinforcing components are all connected to the bag body using double-line overlock stitching.

[0012] Furthermore, the bottom surface of the bag is provided with two discharge ports.

[0013] The beneficial effects of this utility model are as follows: By replacing the flexible slings with two sets of symmetrical U-shaped rigid slings inside the bag, the risk of stress concentration and tearing caused by the slings "sinking" into the bag during lifting is eliminated; its unique U-shaped path forms a rigid skeleton, directly and evenly transferring the load and significantly suppressing bag deformation; the top connection of the double rigid wires in the same group forms a lifting section to ensure balanced force distribution; together with the No. 1 reinforcement at the corner of the bag, it forms the main load-bearing frame, and the No. 2 surface reinforcement and the bottom transverse rigid wires intersect perpendicularly to form a mesh constraint, further enhancing the overall anti-expansion capability; the No. 3 reinforcement on the diagonal of the bag bottom specifically reinforces the stress concentration area; all reinforcements are reliably connected by double-line overlock stitching, greatly improving the stitch strength and durability; the rigid wires are sandwiched between the polyethylene inner lining layer and the polypropylene woven fabric main layer, protecting the bag and materials while fixing the position of the rigid straps; the dual discharge port design improves unloading efficiency and balances the force on the bottom of the bag. Ultimately, it achieves a comprehensive advantage of ultra-high lifting strength, excellent deformation resistance, ultra-long service life, and efficient unloading. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 is a side view of the present invention.

[0016] Figure 3 is a perspective structural diagram of this utility model.

[0017] In the picture:

[0018] 1. Bag body; 2. Inlet; 3. Outlet; 4. Rigid lifting strap; 5. First reinforcing component; 6. Second reinforcing component; 7. Third reinforcing component. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0020] Example 1: As shown in Figures 1, 2, and 3, a reinforced lifting strap structure container bag includes a bag body 1, which has four sides. The top surface of the bag body 1 is provided with an inlet 2, and the bottom surface is provided with an outlet 3. The bag body 1 includes two sets of rigid lifting straps 4 symmetrically arranged inside the bag body 1. Each set of rigid lifting straps 4 enters the bag body from the top surface, extends vertically along one side to the bottom surface, crosses the bottom surface laterally, and then extends vertically along the other side to the top surface, forming a U-shaped cross-section structure. Each set of rigid lifting straps 4 consists of two rigid wires. The end of the rigid wire protruding from the bag body is connected to the adjacent rigid wire of the same set to form a lifting part. A first reinforcing member 5 is provided at the connection between each side of the bag body 1 and the adjacent side. A second reinforcing member 6 is provided on the surface of the bag body 1, which is perpendicular to the rigid lifting straps 4 at the bottom surface of the bag body 1 and wraps around the top surface, bottom surface, and side without rigid lifting straps 4 of the bag body 1. The bag body 1 consists of, from the inside out: a polyethylene film liner with a thickness of 0.1mm to 0.3mm, and a basis weight of 80g / m³.2 ~150g / m 2 The bag consists of a polypropylene woven fabric main layer and rigid straps 4 with stiff filaments positioned between the polyethylene film liner and the polypropylene woven fabric main layer. The stiff filaments are made of galvanized high-carbon steel wire with a diameter of 3mm to 6mm. Two reinforcing members 7 (number three) are located diagonally on the bottom of the bag, between the bag body and reinforcing member 6. Reinforcing members 5 (number one), 6 (number two), and 7 (number three) are made of nylon webbing. All three reinforcing members are connected to the bag body 1 using double-stitched overlock seams. The bottom of the bag body 1 has two material outlets.

[0021] The working principle of this utility model is as follows: Material is filled from the top inlet, and the bag body maintains its shape stability due to the internal U-shaped rigid straps; the hook connects the lifting part of two sets of rigid wires. During hoisting, the U-shaped rigid wire skeleton directly transmits the load, and the force is transmitted vertically downward along the side and distributed to the entire bottom of the bag through the horizontal rigid wires on the bottom surface; there is no phenomenon of strap sinking, and the corners of the bag body are protected by the No. 1 reinforcement, so there is no stress concentration; stacking: the No. 2 reinforcement and the bottom part of the U-shaped rigid strap form a mesh constraint to suppress the expansion and deformation of the bag body; unloading: the double discharge port is opened, and the material flows out quickly, and the No. 3 reinforcement on the bottom diagonal prevents the bottom corner from breaking. The core functions of rigid slings are: eliminating the defects of flexible slings: the rigid wires provide rigid support to the bag wall during hoisting, avoiding localized stress tearing caused by the "sinking" of traditional slings; optimizing the force transmission path: the U-shaped structure transmits the hoisting force vertically from the top lifting part along the side, and then evenly distributes it from the bottom horizontal rigid wires, forming a closed-loop load-bearing frame; and synergistically resisting deformation: the bottom horizontal rigid wires intersect perpendicularly with the second reinforcing member to suppress lateral expansion; the first side reinforcing member and the third bottom corner reinforcing member are used to reinforce weak areas and prevent the seams from breaking.

[0022] In summary, the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A reinforced sling structure container bag, comprising a bag body, the bag body having four sides, characterized in that, The bag body has an inlet on the top surface and an outlet on the bottom surface. The bag body includes two sets of rigid straps symmetrically arranged inside the bag body. Each set of rigid straps enters the bag body from the top surface, extends vertically along one side to the bottom surface, crosses the bottom surface laterally, and then extends vertically along the other side to the top surface, forming a U-shaped cross-section structure. Each set of rigid straps consists of two rigid wires. The end of each rigid wire protruding from the bag body is connected to an adjacent rigid wire of the same set to form a lifting part. Each side of the bag body has a first reinforcing member at the connection point between each side and the adjacent side. The surface of the bag body has a second reinforcing member that is perpendicular to the rigid straps at the bottom of the bag body and wraps around the top surface, bottom surface, and the side without rigid straps.

2. The reinforced sling construction bag of claim 1, wherein, The bag body comprises, from the inside out: a polyethylene film liner with a thickness of 0.1mm to 0.3mm, and a polypropylene woven fabric main body layer with a basis weight of 80g / m² to 150g / m²; the rigid straps are sandwiched between the polyethylene film liner and the polypropylene woven fabric main body layer.

3. The reinforced sling construction bag of claim 1, wherein, The hard wire is made of galvanized high-carbon steel wire with a diameter of 3mm to 6mm.

4. The reinforced sling structure container bag according to claim 1, characterized in that, The bottom of the bag body is provided with two No. 3 reinforcing members located on the diagonal lines of the bottom face of the bag body. The No. 3 reinforcing member is located between the bag body and the No. 2 reinforcing member.

5. The reinforced sling construction bag of claim 1 or 4, wherein, The first, second, and third reinforcing components are made of nylon webbing.

6. The reinforced sling construction bag of claim 1 or 4, wherein, The No. 1, No. 2, and No. 3 reinforcing components are all connected to the bag body by double-line overlock stitching.

7. The reinforced sling bag structure bag according to claim 1, wherein, The bag has two discharge ports at the bottom.

Images