Load fastening devices and methods

Abstract

To fasten a cargo using a cargo fastener that enables easy and safe loading and fastening work without impairing the quality of the cargo. [Solution] The device has a first frame whose length fits the width of the vehicle's cargo bed, and a second frame that surrounds part of the outer circumferential surface of the first frame.When securing the cargo, the cargo on the vehicles stacked to the same height is secured by pressure from above using a cargo securing device that has locking portions at both ends of the first frame for locking a cargo securing rope.

Description

[Technical field]

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

[0002] The prior art for cargo securing devices for securing objects includes the following technologies.

[0003] One example of a lashing device is one that comprises a first cargo fastener formed as a long, string-like body having a hook at one end, a length adjustment device that holds the other end of the first cargo fastener at any position to adjust the length of the one end, and a second cargo fastener formed as a long, string-like body extending toward the opposite side of the length adjustment device from the first cargo fastener and having a hook at its tip, wherein at least one of the first cargo fastener and the second cargo fastener is formed as 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 bar having a length approximately the same as the width of the cargo placed on the vehicle bed, and the support bar has a mounting section on which a cargo tie-down device is placed, the fastener having a hook section that is engaged with the end of a wire rope extending from each side of the bed (Patent Document 2).

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

[0006] The technology described in Patent Document 2 involves placing a block over which a wire rope is stretched on top of the load, and then wrapping and tightening the block near the center with a load-tightening device to secure the load.

[0007] A problem with securing cargo on vehicles and the like 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 the cargo varies greatly depending on the worker.

[0008] During the securing work, it is necessary to take sufficient care to ensure that the pressure on the cargo and the pressure caused by the contact between the cargo are not excessive. It is required that the cargo is loaded and secured in an ideal shape so that the quality of the cargo is not deteriorated due to excessive force being applied to the cargo by the securing work or vibration during transportation.

[0009] Furthermore, cargo tying work is generally performed by workers climbing onto the cargo and standing on top of the cargo. Tightening work on unstable cargo piled up to a height of several meters is dangerous.

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

[0011] In addition, the technology described in Patent Document 2 does not solve the above problems because it is not easy to prepare lightweight, easy-to-handle guardrails that can withstand the load of securing the load, and the securing work must be performed on the cargo.

[0012] In other words, an object of the present invention is to realize easy and safe operations such as loading and securing of cargo without compromising the quality of the cargo. [Prior art documents] [Patent documents]

[0013] [Patent Document 1] JP 2023-39530 A [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 fastening device that enables easy and safe loading and fastening operations without compromising the quality of the cargo.

[0015] The first invention is a cargo fastening device for fastening a cargo on a vehicle by applying pressure from above, the cargo fastening device having a first frame having a length that fits the width of the cargo bed of the vehicle, and a second frame that surrounds part of the outer circumferential surface of the first frame, and having locking parts that lock a cargo fastening rope at both ends of the first frame when fastening the cargo.The second invention is a cargo fastening device for fastening a cargo on a vehicle by applying pressure from above, the cargo fastening device having a first frame having a length that fits the width of the cargo bed of the vehicle, and a second frame that surrounds part of the outer circumferential surface of the first frame, and having locking parts that lock a cargo fastening rope at both ends of the first frame and at an upper part of the second frame when fastening the cargo, the locking parts being positioned so that the rope becomes convex when fastening the cargo. A third invention is the cargo tie-down device of the first or second invention, in which each of the locking parts is rotatable in the longitudinal direction of the first frame so as to engage with the rope, and is provided with rollers for locking the rope when the cargo is secured.A fourth invention is a method for securing cargo on a vehicle, comprising a first step of stacking cargo on the vehicle bed in rows at the same height, a second step of suspending a frame having a length that matches the width of the bed over the cargo so that the cargo stacked in the row in the first step is evenly pressurized from above, 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, and fastening the cargo to the bed, in which the rope is suspended at three points, the both ends and the top of the frame, so that the rope is suspended in a convex shape in the third step.In addition, a fifth invention is a method for securing cargo on a vehicle, comprising a first step of stacking cargo in a row at the same height on the cargo bed of the vehicle, a second step of draping a frame of a length that fits the width of the cargo bed over the cargo so that pressure is evenly 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 cargo bed, draping it over the frame installed in the second step, and attaching it to the other end of the cargo bed, wherein prior to the first step, a reinforcing material that reinforces the frame by surrounding a portion of the outer periphery of the frame is externally provided on the outer periphery, and the third step is to hang the rope at three points, namely both ends of the frame and the top of the reinforcing material, so that the rope is draped over the cargo in a convex shape. In addition, a sixth invention is a cargo securing method according to the fourth or fifth invention, in which rollers rotatable 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. Effect of the Invention

[0016] In the present invention, the second frame surrounds the outer peripheral surface of the first frame that fits the width of the loading platform, and both ends of the first frame have locking parts for locking the rope for securing the cargo, so that the second frame can prevent the first frame from bending when securing the cargo, and the cargo can be secured with uniform pressure. In addition, in the present invention, the locking parts of the rope for securing the cargo disperse pressure by making the rope for securing the cargo convex when securing the cargo, so that the first frame can be further prevented from bending. In addition, in the present invention, the rope for securing the cargo is locked by the roller member, so that the work of securing the cargo becomes easier, and the smooth engagement and locking of the rope can be further prevented from bending the first frame. In this way, the present invention is lightweight and has a structure that can withstand high loads due to the first and second frames including the locking parts, so that the cargo can be secured easily and safely. In addition, 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 becomes possible to perform tightening operations such as wrapping the cargo around the sides, which is expected to result in easy and safe cargo tightening. [Brief description of the drawings]

[0017] [Figure 1] 1 is an overall view of a load fastener according to the present invention; [Diagram 2] FIG. 2 is an image diagram of a cargo secured by the cargo securing method according to the present invention. [Diagram 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 PREFERRED EMBODIMENTS

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

[0019] Fig. 1 is an overall view of a load fastening device 1 according to the present invention. The load fastening device 1 comprises, as its components, an aluminum frame (first frame 10) that serves as the main body, an aluminum frame (second frame 20) that surrounds the outer peripheral surface of the central part of the first frame 10, and a locking part 30 that locks the load fastening rope when the load is fastened with the load fastening 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 acting as stoppers are provided at two locations on the side surface of the first frame 10 so that the sliding range of the second frame 20 does not deviate from near the center of the first frame 10 (omitted in FIG. 1). However, in the present invention, the sliding range of the second frame 20 is not limited.

[0021] Furthermore, there is no limitation on the degree of closeness between the first frame 10 and the second frame. When the role of the second frame 20 is to prevent the first frame 10 from sagging, it is desirable for the frames to be close to each other with no gaps at key points. On the other hand, when the role of the second frame 20 is to secure the rope for securing the load or when the role of the second frame 20 is to allow the second frame to slide smoothly, a loose closeness 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 examples and are not limiting, and the lengths of the first frame 10 and the second frame 20 may be approximately the same.

[0023] 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, and are integrated with each frame to form the locking parts 30 for the cargo-securing rope when securing cargo. Locking part 30 is located higher at the upper center of the second frame 20 (locking part 30b) than at both ends of the first frame 10 (locking parts 30a, 30c).

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

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

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

[0028] First, the building materials were loaded onto the bed of the vehicle. The building materials were arranged in three rows with their longitudinal direction facing the front and rear of the vehicle. Here, the reason for arranging the materials in three rows is that they fit within the span of the load fastener 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 adjacent rows so that they would not come into contact with each other. As mentioned above, the size of the intervals was left to the discretion of the workers, as long as the three rows of building materials were within the above range.

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

[0031] Next, the load fastener 1 was draped over the three rows of loaded building materials. The load fastener 1 draped over the three rows of building materials was positioned so that the locking parts 30a at both ends were above the hooks at both ends of the vehicle's loading platform. The load fasteners 1 were used in two locations, one at the front and one at the rear of the load. As necessary, cushioning material of a specified thickness was appropriately placed between the load fastener 1 and the load to ensure uniform pressure from above.

[0032] The wire rope for securing the load was attached to one end of the hook, and was then attached to the rollers of the locking portions 30a, 30b, and 30c in order, and finally attached to the hook at the other end via a load-tightening device.

[0033] The cargo tie-down device is used to complete the cargo tie-down by tying the wire rope 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 operation was carried out near the side of the cargo. Figure 2 shows the cargo after it 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 load-tightening method according to the present invention.

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

[0037] No deterioration in the quality of the cargo fastening, such as collapse of the cargo, was observed in the building materials on the loading platform. In other words, it was confirmed that stable cargo fastening can be achieved by simply adjusting the height of the cargo stacked in a row to be the same.

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

[0039] The load fastening device 1 allows uniform pressure to be applied to the load, allowing workers to fasten the load beside the load without climbing on it. In other words, it has been confirmed that the load fastening device 1 eliminates the need to work at high altitudes and allows workers to fasten the load safely.

[0040] Example 2 An embodiment that can be considered based on the considerations of the first embodiment and subsequent additional verification will be referred to as the second embodiment.

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

[0042] Figure 3 shows the conventional loading and securing work. Conventionally, workers had to consider 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 quality of the cargo.

[0043] In addition, 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. Depending on the state of the cargo securing, adjacent cargo could come into contact with each other during transportation, causing damage such as cracks.

[0044] Fig. 4 shows the loading and fastening operations of the present invention. It is now possible to stack the building materials in rows so that they fit within the length of the fastening device 1, and adjust the height of the load, regardless of the worker's experience (Fig. 4, left).

[0045] In addition, since workers can secure cargo without climbing onto the cargo (Fig. 4, right), the work is safer and the work efficiency and quality are improved. In addition, since the cargo is secured with sufficient spacing to prevent the cargo from touching each other, there are no problems such as cargo collapse or cargo touching each other during transport.

[0046] The following factors have made it possible to perform loading and securing operations easily and safely:

[0047] The cargo fastening device 1 makes it possible to fasten the cargo with uniform pressure from above. Conventionally, pressure from fastening the 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 solves these problems.

[0048] One factor that enables this even pressure distribution is that the load fastener 1 has a two-layer structure consisting of a first frame 10 whose length fits the width of the vehicle's loading platform, 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 load fastener 1 when strong downward pressure is applied to the locking portions 30 at both ends of the first frame 10, preventing the first frame 10 from bending, resulting in a lightweight, sturdy load fastener 1 that can withstand high loads.

[0049] Without the second frame 20, the pressure resistance would be reduced accordingly, and the first frame 10 would be more likely to sag due to the pressure. If the load fastening device 1 sags, the pressure from the top to the bottom of the load would become uneven, reducing the load fastening quality and leading to problems such as load damage and load collapse 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. In addition, 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, a cheaper material may be selected for the first frame 10 and an expensive but strong material may be selected for the second frame 20, thereby making it possible to manufacture a high-strength load fastening device 1 while keeping overall costs down. 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 lashed down. That is, by locking the cargo tying rope with the 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 rope for securing the load 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 a tying rope, and is provided with rollers that lock the rope when securing a load. That is, when a tying rope is hung on the locking part 30, the rotation of the rollers of the locking part 30 sends the tying rope in the desired direction, making it easy to pass the rope and ensuring smooth and stable tying of the load by the tying 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 allows easy engagement with the load-tightening rope. Specifically, when the load-tightening 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 portion 30b engages with the rope for securing the cargo, the worker can slide the second frame 20 having the engaging portion 30b by pulling it closer to him / her as necessary, thereby improving workability. Specifically, when the arrangement of the middle row of the stacked rows in the first embodiment is shifted from the center, the second frame 20 is slid to the position of the row, and the rope for securing the cargo is engaged at that position.

[0057] The above embodiment is merely an example, and the scope of the present invention is not limited thereto. The present invention also includes inventions that have been 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 for moving bodies such as ships and airplanes, and cargo tying for storing cargo before and after transportation. [Industrial Applicability]

[0059] The cargo fastening device and cargo fastening method according to the present invention can be used for transport vehicles in general, and can also be used for strengthening earthquake resistance during storage before and after transportation for the purpose of preserving cargo, regardless of whether it is actually transported or not. [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 tie-down device for fastening a load on a vehicle by applying pressure from above, A first frame having a length that fits the width of the vehicle bed; a second frame surrounding a part of an outer peripheral surface of the first frame; having When the cargo is secured, the first frame has locking portions at both ends and an upper portion of the second frame for locking a cargo-securing rope; A cargo fastening device in which each of the engagement portions is positioned so that the rope becomes convex when the cargo is secured.

2. 2. The load tie-down device of claim 1, wherein each of the locking portions includes a roller rotatable longitudinally of the first frame for engaging the rope and locking the rope when the load is secured.

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

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 platform of the vehicle; A second step of suspending a frame having a length that matches the width of the loading platform over the top of the load so that pressure is evenly applied from above to the loads stacked in a row by the first step; a third step of fastening a rope for securing a load to one end of the load platform, stretching the rope over the frame installed in the second step, and fastening the rope to the other end of the load platform to secure the load to the load platform; Including, Before the first step, a reinforcing material is provided on the outer peripheral surface of the frame so as to surround the outer peripheral surface of the frame and thereby reinforce the frame; The third step of the load securing method comprises hanging the rope at three points, namely, both ends of the frame and the upper part of the reinforcement material, so that the rope is hung in a convex shape.

5. 5. A method for securing a load according to claim 3 or 4, wherein rollers rotatable in the longitudinal direction of the frame are provided at three locations where the rope is to be hung, and the rope is hung on the rollers.

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