Load fastener and load fastening method

Abstract

To perform cargo fastening by a cargo fastener capable of simple and safe loading and fastening work without impairing the quality of cargo.SOLUTION: A first frame having a length adapted to the width of a loading space of a vehicle and a second frame surrounding a part of an outer circumferential surface of the first frame are provided, and a load of vehicles stacked at the same height is lashed by a load-tightening tool having a locking part locking a rope for load tightening at both ends of the first frame when the load is lashed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cargo fastening device for fastening cargo by applying pressure from above, and a method for fastening cargo. [Background technology]

[0002] The following prior art techniques are available for securing cargo.

[0003] One example of a lashing device is one that comprises a first cargo fastening body formed in the shape of a long, string-like body with a hook at one end, a length adjustment device that holds the other end of the first long body at any position to adjust the length of the one end, and a second cargo fastening body formed in the shape of a long, string-like body that extends toward the opposite side of the length adjustment device from the first cargo fastening body and has a hook at its tip, wherein at least one of the first cargo fastening body and the second cargo fastening body is formed in the shape of a hollow tube whose cross-sectional shape can be freely deformed (Patent Document 1).

[0004] Another example is a cargo securing device that includes a long, thin support beam that has a length approximately the same as the width of the cargo placed on the vehicle bed, and the support beam has a mounting section on which a tensioner having a hook portion that can be engaged with the end of a wire rope extending from each side of the bed is placed (Patent Document 2).

[0005] The technology described in Patent Document 1 is a lashing device that has a first and second securing body that can be hung around a load, at least one of which is formed as a hollow tube whose cross-sectional shape can be freely changed. This lashing device improves tensile strength while suppressing a decrease in flexibility, thereby stably securing the load.

[0006] The technology described in Patent Document 2 involves placing a block for suspending a wire rope on top of the load, and then using a load-tightening device to tighten the block around the center of the block to secure the load.

[0007] One problem with securing cargo on vehicles and other objects is that the work of securing cargo depends heavily on the experience and skill of the worker, and so the quality of work such as loading and securing cargo varies greatly depending on the worker.

[0008] When securing cargo, careful consideration must be given to avoid excessive pressure on the cargo or pressure caused by contact between cargo pieces. It is important to load and secure cargo in an ideal shape so that excessive force is not applied to the cargo due to securing work or vibration during transportation, which could result in a deterioration in the quality of the cargo.

[0009] Furthermore, securing work is generally performed by workers climbing onto the cargo and standing on top of it, which can be dangerous when securing unstable cargo that is several meters high.

[0010] Given these problems, the technology described in Patent Document 1 does not solve the problems of simplifying the loading method for inexperienced workers or reducing the risk of cargo securing work.

[0011] Furthermore, the technology described in Patent Document 2 does not solve the above problems because it is not easy to prepare lightweight, easy-to-handle guards that can withstand the load of securing the cargo each time, and the securing work must be carried out on top of the cargo.

[0012] That is, an object of the present invention is to realize easy and safe loading and securing of cargo without compromising the quality of the cargo. [Prior art documents] [Patent documents]

[0013] [Patent Document 1] Japanese Patent Application Publication No. 2023-39530 [Patent Document 2] Utility Model Registration No. 3206523 Summary of the Invention [Problem to be solved by the invention]

[0014] The problem to be solved by the present invention is to provide a cargo tie-down device that enables easy and safe loading and tying of cargo without impairing the quality of the cargo.

[0015] The first invention is a cargo tie-down device for securing a vehicle's cargo by applying pressure from above, comprising a first frame having a length that matches the width of the vehicle's cargo bed and a second frame that surrounds part of the outer periphery of the first frame, with locking portions for locking a cargo tying rope at both ends of the first frame when securing the cargo.The second invention is a cargo tie-down device for securing a vehicle's cargo by applying pressure from above, comprising a first frame having a length that matches the width of the vehicle's cargo bed and a second frame that surrounds part of the outer periphery of the first frame, with locking portions for locking a cargo tying rope at both ends of the first frame and at the top of the second frame when securing the cargo, and the locking portions are positioned so that the rope forms a convex shape when securing the cargo. A third invention is a cargo securing device according to the first or second invention, in which each of the locking portions is rotatable in the longitudinal direction of the first frame to engage with the rope and is provided with rollers that lock the rope when securing the cargo.A fourth invention is a method for securing cargo on a vehicle, comprising: a first step of stacking cargo at the same height on the vehicle bed, a second step of suspending a frame of a length that matches the width of the bed over the cargo so that uniform pressure is applied from above to the cargo stacked in the first step, and a third step of securing a cargo rope to one end of the bed, suspending it over the frame installed in the second step, and securing it to the other end of the bed, thereby securing the cargo to the bed, wherein in the third step, the rope is suspended at three points, namely, both ends and the top of the frame, so that the rope is suspended in a convex shape.A fifth invention is a method for securing cargo on a vehicle, comprising: a first step of stacking cargo in rows at the same height on the vehicle bed; a second step of draping a frame of a length that matches the width of the bed over the cargo so that uniform pressure is applied from above to the cargo stacked in the row in the first step; and a third step of attaching a cargo securing rope to one end of the bed, draping it over the frame installed in the second step, and attaching it to the other end of the bed, thereby fastening the cargo to the bed; and prior to the first step, a reinforcing material is attached to the outer periphery of the frame to reinforce the frame, and the third step is to attach the rope to three locations: both ends of the frame and the top of the reinforcing material, so that the rope is draped in a convex shape. In addition, the sixth invention is a cargo securing method according to the fourth or fifth invention, in which rollers that can rotate in the longitudinal direction of the frame are provided at three locations where the rope is hung, and the rope is hung on the rollers. [Effects of the Invention]

[0016] In the present invention, the second frame surrounds the outer periphery of a first frame that fits the width of the loading platform, and both ends of the first frame have locking portions for locking a lashing rope. This prevents the first frame from sagging when lashing a load, and is expected to enable the load to be secured with even pressure. Furthermore, in the present invention, the locking portions of the lashing rope disperse pressure by convexing the lashing rope when securing the load, further enhancing the prevention of lashing of the first frame. Furthermore, in the present invention, the lashing rope is locked by roller members, making the lashing operation easier, and the smooth engagement and locking of the rope further enhances the prevention of lashing of the first frame. Thus, the present invention, thanks to the first and second frames including the locking portions, provides a lightweight structure that can withstand high loads, and is expected to enable easy handling and safe lashing of loads. Furthermore, since the present invention is a method that allows pressure to be applied evenly from above the cargo without having to climb onto the cargo, it is possible to perform tightening operations such as wrapping around the sides of the cargo, and it is expected that cargo can be secured easily and safely. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is an overall view of a load securing device according to the present invention; [Figure 2] 1 is an image diagram of a cargo secured by the cargo securing method according to the present invention. [Figure 3] FIG. 1 is a diagram showing conventional loading and securing operations. [Figure 4] 1 is a diagram showing loading and securing operations according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0018] Example 1 The following are embodiments of the present invention.

[0019] Figure 1 is an overall view of a cargo tie-down device 1 according to the present invention. The components of the cargo tie-down device 1 are an aluminum frame (first frame 10) that serves as the main body, an aluminum frame (second frame 20) that surrounds the outer periphery of the central part of the first frame 10, and a locking part 30 that locks the cargo tie-down rope when the cargo is tied down with the rope.

[0020] Here, the second frame 20 slides in the longitudinal direction of the first frame 10, using the outer peripheral surface of the first frame 10 as a guide plate. In this embodiment, protrusions that act as stoppers are provided at two locations on the side surface of the first frame 10 to prevent the sliding range of the second frame 20 from moving outside the vicinity of the center of the first frame 10 (not shown in FIG. 1). However, the sliding range of the second frame 20 is not limited in the present invention.

[0021] Furthermore, there are no limitations on the degree of closeness between the first frame 10 and the second frame. If the role of the second frame 20 is to prevent the first frame 10 from sagging, it is desirable that the frames be closely spaced with no gaps at key points. On the other hand, if the role of the second frame 20 is to secure the ropes used for securing cargo or if smooth sliding of the second frame is important, a looser proximity is acceptable.

[0022] In this embodiment, the first frame 10 has a longitudinal length of 2300 mm and a weight of 8.95 kg, and the second frame has a longitudinal length of 350 mm and a weight of 0.816 kg. However, these lengths are merely an example and are not limiting, and the lengths of the first frame 10 and the second frame 20 may be approximately the same.

[0023] Furthermore, the shape of each frame is not limited as long as it applies uniform pressure to the load. For example, the first frame 10 may be H-shaped, I-shaped, flat, rectangular, cylindrical, etc., and the second frame 20 may be a shape that can surround the outer periphery of the first frame 10 and ensure the desired effect according to the configuration of the present invention.

[0024] Drum-shaped resin rollers (outer diameter 41 mm, width 45 mm) are provided at both ends of the first frame 10 and at the upper center of the second frame 20. These are integrated with each frame and serve as locking points 30 for the cargo securing rope when securing cargo. Locking point 30 is located higher at the upper center of the second frame 20 (locking point 30b) than at both ends of the first frame 10 (locking points 30a, 30c).

[0025] As a result, the cargo securing rope is hung across the length of the first frame 10, using each roller of the locking section 30 as a hook, and when it is locked by the tightening operation, the middle section (the section locked by the locking section 30b) becomes high and convex.

[0026] At this time, the securing rope is fastened so as not to come into contact with the cargo. Generally, both ends of the bed of a transport vehicle have hooks or other attachment points for securing ropes. The first frame 10 is positioned so that the attachment points 30a and 30c are located above the respective attachment points. In other words, it has a length approximately equal to the width of the vehicle bed (in the present invention, this is expressed as "a length that matches the width of the vehicle"). Furthermore, the first frame 10 does not have to be exactly the same as the width of the vehicle bed, as long as it is long enough to prevent contact between the securing rope and the cargo.

[0027] <Verification> In this example, flat plate-shaped building materials were used as transported goods, and the loading operation onto the loading platform of a vehicle and the securing operation using the securing device 1 were verified, along with the effects of these operations.

[0028] First, the building materials were loaded onto the truck bed. The building materials were arranged in three rows with their longitudinal direction facing the front and rear of the vehicle. Three rows were chosen because they fit within the span of the load fastening device 1. Therefore, depending on the size of the building materials, they may be arranged in two, four, or five rows.

[0029] In addition, the building materials were loaded with intervals between them so that they would not come into contact with adjacent rows. As mentioned above, the size of the intervals was left to the discretion of the workers, as it was sufficient for all three rows of building materials to fall within the above range.

[0030] In addition, the building materials in each row were stacked to the same height. In this example, the building materials were the same size, so they were stacked so that the number of building materials in each row was the same.

[0031] Next, the load tie-down device 1 was placed over the three rows of loaded building materials. The load tie-down device 1 placed over the three rows of building materials was positioned so that the locking portions 30a at both ends were above the hooks at both ends of the vehicle's loading platform. The load tie-down device 1 was used in two locations, one in front and one in rear of the load. If necessary, cushioning material of a specified thickness was placed between the load tie-down device 1 and the load to ensure equal pressure from above.

[0032] The wire rope for securing the cargo was hooked onto one end of the hook, and was then hooked onto each roller of the locking portion 30a, locking portion 30b, and locking portion 30c in turn, and finally hooked onto the hook at the other end via a cargo tie-down device.

[0033] The cargo tie-down device is used to complete the cargo tie-down by tying the wire rope, which is hung on the locking portion 30c, to the hook at the other end. The cargo was secured to the loading platform by the tightening action of the cargo tie-down device. The cargo tie-down work was carried out near the side of the cargo. Figure 2 shows the state after the cargo was tied down.

[0034] After securing the cargo, the secured cargo was transported, unpacked at the destination, and the quality of each building material was checked.

[0035] <Result> The following effects have been confirmed by the cargo tie-down according to the present invention.

[0036] No cracks or other deterioration in quality was found in the building materials after transportation. In other words, it was confirmed that the quality of the transported goods was maintained throughout the entire transportation process, including loading, securing, transporting, and unpacking.

[0037] No deterioration in the securing quality, such as collapse of the cargo, was observed in the building materials on the loading platform. In other words, it was confirmed that stable securing of cargo is possible with the cargo securing device 1 simply by adjusting the height of the stacked cargo to be the same.

[0038] Even for inexperienced workers, the entire process from loading to securing the cargo was shorter than before. In other words, it was confirmed that the work could be completed in a shorter time while maintaining quality, without relying on the conventional method in which workers had to consider the appropriate packaging style for securing the cargo.

[0039] The cargo tie-down device 1 makes it possible to apply uniform pressure to the cargo, allowing workers to tie down the cargo beside the cargo without having to climb on top of it. In other words, it has been confirmed that there is no need to work at heights, and workers can tie down the cargo safely.

[0040] Example 2 An embodiment that can be considered based on considerations based on Example 1 and subsequent additional verifications will be referred to as Example 2.

[0041] It was confirmed from Example 1 that the cargo tying according to the present invention allows for easier and safer cargo tying than conventional cargo tying.

[0042] Figure 3 shows the conventional loading and securing operations. Previously, workers had to load cargo while taking into consideration the shape of the cargo when securing it, based on their experience (left side of Figure 3). In other words, loading was a difficult task for inexperienced workers, and often resulted in a loss of cargo quality.

[0043] Furthermore, workers had to climb onto the cargo to secure it (Figure 3, right). Working at such heights was dangerous and had the problem of affecting work efficiency and quality. Furthermore, depending on the state of the fastening, adjacent cargo could come into contact with each other during transport, causing damage such as cracks.

[0044] Figure 4 shows the loading and securing operations of the present invention. The worker does not need to be experienced, but simply stacks the building materials in rows so that they fit within the length of the securing device 1 and adjusts the height of the load (left diagram of Figure 4).

[0045] In addition, workers can now secure cargo without climbing onto the cargo (Fig. 4, right), making the work safer and improving work efficiency and quality. Furthermore, by securing cargo with sufficient spacing to prevent it from touching each other, there were no problems such as cargo shifting or cargo touching each other during transport.

[0046] The following factors have made it possible to perform such simple and safe loading and securing operations:

[0047] The cargo securing device 1 allows cargo to be secured with uniform pressure from above. Conventionally, pressure from securing cargo was concentrated at the corners of the cargo, causing problems such as collapse or damage to the cargo, but this invention's uniform vertical pressure eliminates these problems.

[0048] One factor that enables this uniform pressure distribution is that the cargo tie 1 has a two-layer structure consisting of a first frame 10 whose length matches the width of the vehicle's cargo bed, and a second frame 20 that surrounds part of the outer periphery of the first frame 10 and reinforces the first frame 10. This increases the pressure resistance of the cargo tie 1 when strong downward pressure is applied to the locking portions 30 at both ends of the first frame 10, preventing deflection of the first frame 10, resulting in a lightweight, sturdy cargo tie 1 that can withstand heavy loads.

[0049] Without the second frame 20, the pressure resistance would be reduced, and the first frame 10 would be more likely to sag under the pressure. If the cargo tie 1 sags, the pressure acting from top to bottom on the cargo would become uneven, reducing the quality of the cargo tie-down and leading to problems such as damage to the cargo or collapse of the cargo during transport.

[0050] In the first embodiment, the second frame 20 slides in the longitudinal direction of the first frame 10, but it may be fixed to the first frame 10. Furthermore, the material of the first frame 10 and the material of the second frame 20 do not need to be the same.

[0051] For example, the first frame 10 may be made of aluminum and the second frame 20 may be made of carbon steel. Because less material is required for the second frame 20 than for the first frame 10, an inexpensive material may be selected for the first frame 10 and an expensive but strong material for the second frame 20, thereby reducing overall costs and enabling the manufacture of a high-strength load fastening device 1. In this way, the materials of the parts that make up the load fastening device 1 may be selected to meet expected specifications.

[0052] Another advantage is that the locking portion 30 of the cargo tying rope is positioned so that the cargo tying rope becomes convex when the cargo is secured. That is, by locking the cargo tying rope with locking portions 30a, 30b, and 30c, the pressure on the cargo tying device 1 is dispersed, and deflection of the first frame 10 can be more effectively prevented.

[0053] In the present invention, the positional relationship in which the securing rope is convex means that the locking portion 30b is located higher than the line connecting the locking portions 30a and 30c. Also, the locking portion 30b does not have to be located in one place, and may be located in two or more places.

[0054] Another advantage is that the locking part 30 is rotatable in the longitudinal direction of the first frame 10 so as to engage with the lashing rope, and is provided with a roller that locks the rope when securing the cargo. In other words, when the lashing rope is hung on the locking part 30, the rotation of the roller of the locking part 30 sends the lashing rope in the desired direction, making it easy to hang the rope and ensuring smooth and stable lashing of the cargo by the lashing device.

[0055] In the first embodiment, a drum-shaped roller is used for the roller of the locking part 30, but any shape may be used as long as it has a rotation function that makes it easy to engage with the cargo securing rope. Specifically, when the cargo securing rope is in the form of a belt, a cylindrical roller may be used.

[0056] Another advantage is that the second frame 20 slides in the longitudinal direction of the first frame 10. That is, when the engaging portions 30b are engaged with the securing ropes, the worker can slide the second frame 20 having the engaging portions 30b by pulling it closer to him as needed, thereby improving workability. Specifically, in the case of stacking in the first embodiment, when the arrangement of the middle row is shifted from the center, the second frame 20 can be slid to the position of that row, and the securing rope can be secured at that position.

[0057] The above embodiments are merely examples, and the scope of the present invention is not limited to these. The present invention also includes inventions that are modified within the scope of the present invention and inventions equivalent to the present invention.

[0058] In the present invention, the term "vehicle" includes not only commercial trucks, but also heavy machinery, agricultural machinery, trains, etc. The scope of the present invention also includes cargo tying on moving bodies such as ships and airplanes, and cargo tying for storing cargo before and after transportation. [Industrial Applicability]

[0059] The cargo tie-down device and cargo tie-down method according to the present invention can be used for transport vehicles in general, and can also be used to strengthen earthquake resistance during storage before and after transport for the purpose of cargo security, regardless of whether the cargo is actually being transported. [Explanation of symbols]

[0060] 1 Load tie-down 10 First Frame 20 Second Frame 30 Locking part 30a: Locking portion at one end of the first frame 30b: Locking portion on second frame 30c: Locking portion at the other end of the first frame

Claims

1. A load securing device for securing a load on a vehicle by applying pressure from above, a first frame having a length that matches the width of the vehicle bed; a second frame surrounding a part of the outer peripheral surface of the first frame; and A cargo securing device having locking portions for locking a cargo securing rope at both ends of the first frame when securing the cargo.

2. A load securing device for securing a load on a vehicle by applying pressure from above, a first frame having a length that matches the width of the vehicle bed; a second frame surrounding a part of the outer peripheral surface of the first frame; and When the cargo is secured, the first frame has locking portions at both ends thereof and at the top of the second frame for locking a cargo securing rope, A cargo securing device in which each of the locking portions is positioned so that the rope becomes convex when the cargo is secured.

3. 3. A load securing device as claimed in claim 1 or 2, wherein each of the locking portions is provided with a roller that is rotatable in the longitudinal direction of the first frame to engage with the rope and lock the rope when the load is secured.

4. A method for securing cargo on a vehicle, comprising: a first step of stacking the products in rows at the same height on the loading platform of the vehicle; a second step of suspending a frame having a length that matches the width of the loading platform over the loads so that pressure is applied evenly from above to the loads stacked in a row by the first step; a third step of fastening a cargo lashing rope to one end of the cargo bed, passing it over the frame installed in the second step, and fastening it to the other end of the cargo bed to secure the cargo to the cargo bed; Including, In the third step, the rope is hung at three points, namely, both ends and the top of the frame, so that the rope is hung in a convex shape.

5. A method for securing cargo on a vehicle, comprising: a first step of stacking the products in rows at the same height on the loading platform of the vehicle; a second step of suspending a frame having a length that matches the width of the loading platform over the loads so that pressure is applied evenly from above to the loads stacked in a row by the first step; a third step of fastening a cargo lashing rope to one end of the cargo bed, passing it over the frame installed in the second step, and fastening it to the other end of the cargo bed to secure the cargo to the cargo bed; Including, Before the first step, a reinforcing member is provided on the outer peripheral surface of the frame so as to surround the outer peripheral surface of a part of the frame and thereby reinforce the frame; The third step is a method of securing a load by hanging the rope at three locations, namely, both ends of the frame and the top of the reinforcement, so that the rope is hung in a convex shape.

6. 6. A cargo securing method according to claim 4 or 5, wherein rollers rotatable in the longitudinal direction of the frame are provided at three locations where the rope is to be fastened, and the rope is fastened to the rollers.

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