JP7650498B2 - Mocco - Google Patents

Description

The present invention relates to a mokko used for transporting soil and sand.

At construction sites, wire mokos and other types of mokos are used. When unloading a load, the mokos need to be pulled out. This makes unloading the load relatively laborious, and the mokos are also susceptible to wear and tear when pulled out.

Patent document 1 describes a mokko with a zipper that allows you to unload cargo without having to pull it out.

Published Utility Model No. 60-105364

The mokko described in Patent Document 1 has a zipper that passes through the center of the mokko. Therefore, the zipper must be opened while the mokko is floating, and the load falls immediately when the zipper is opened. This makes it difficult for an operator to open the zipper directly. Here, the mokko described in Patent Document 1 has a slide rope attached to the zipper slider, so that the zipper can be opened by pulling the slide rope. However, the zipper must be pulled from outside the position where the load will fall, and even in this case, opening the zipper is not an easy task.

The present invention was made in consideration of these circumstances, and aims to create a hob that makes it easy to unload cargo.

In order to solve the above problems, the first invention is a mokko used for transporting objects, which comprises a first sheet member having an opening in the center and suspended by ropes at multiple points, a second sheet member overlapped on the underside of the first sheet member so as to block the opening, a fixing part that fixes one side of the second sheet member in a plan view to the first sheet member, and a connecting part that detachably connects the other side of the second sheet member in a plan view to the first sheet member or a member attached to the first sheet member, and when the mokko is hoisted with the connecting part connected, the opening is kept blocked by the second sheet member, and when the mokko is hoisted with the connecting part released, the second sheet member hangs down from the first sheet member, opening the opening.

The second invention is the first invention, in which when the mokko is placed on a flat surface, the overlap of the second sheet member over the first sheet member is 20 cm or more.

The third invention is the first or second invention, in which the connecting portion includes a plurality of connecting ropes, one end of which is attached to the second sheet member, and a plurality of hooks that are attached to the outer periphery of the first sheet member or to the ropes and can be used to detachably hook the connecting ropes.

In the present invention, the other side of the second sheet member is connected to the first sheet member or a member attached to the first sheet member (a member other than the second sheet member, for example, a rope) by the connecting part. Therefore, the position where the connection is made by the connecting part is outside the opening (the center of the mokko) covered by the second sheet member. Therefore, the connection of the connecting part can be released with the center of the bottom surface of the mokko in contact with the ground. In this case, when the connection is released, not all of the load is immediately discharged from the opening (see FIG. 4(a)). Then, by lifting the mokko from this state, the load can be discharged from the opening. Therefore, even if a worker performs the operation of disconnecting the connection at the connection point by the connecting part, there is no danger from the load and the connection can be directly disconnected. Therefore, the work of unloading the load can be easily performed.

FIG. 1 is a surface view of a wire tuck according to an embodiment of the present invention. FIG. 2(a) is a back view of the wire tuck according to the embodiment, and FIG. 2(b) is an enlarged view of a clamp tube that constitutes a fixing portion. Figure 3 is an explanatory diagram of how to use the wire mokko according to the embodiment, where Figure 3(a) shows the mokko spread out on the ground and loaded with soil, and Figure 3(b) shows the mokko hanging down. Figure 4 is an explanatory diagram of how to use the wire mokko according to the embodiment, where Figure 4(a) shows the mokko with the center part on the ground and the connection by the connecting part released, and Figure 4(b) shows the mokko with the opening part open.

The following describes in detail an embodiment of the present invention with reference to the drawings. Note that the following embodiment is merely an example of the present invention and is not intended to limit the scope of the present invention, its applications, or its uses.

This embodiment is a wire moccasin with a sheet (hereinafter, simply referred to as a "moccasin") 10 used for transporting loads such as soil and sand 5. The moccasin 10 has an opening 15 formed in a first sheet member 11, and can be switched between a closed state in which the opening 15 is blocked by a second sheet member 12, and an open state in which the opening 15 is open.

[About the mokko placed on the ground]
First, the mokko 10 placed on the ground (flat surface) will be described. As shown in Figures 1 and 2(a), the mokko 10 includes a first sheet member 11 with an opening 15 formed in the center, a second sheet member 12 that is overlaid on the back side (lower side) of the first sheet member 11 so as to cover the opening 15, a fixing part 13 that fixes one side (the right side in Figure 2(a)) of the second sheet member 12 in a plan view to the first sheet member 11, and a connecting part 14 that detachably connects the other side (the left side in Figure 2(a)) of the second sheet member 12 in a plan view to the first sheet member 11.

The first sheet member 11 and the second sheet member 12 are made by attaching mesh members 11b, 12b to the back side of impermeable sheets 11a, 12a. The sheets 11a, 12a are made of resin such as polyester. The outer periphery of the sheets 11a, 12a is, for example, a square. Each side of the sheets 11a, 12a is provided with a plurality of through holes 16a that have been processed with eyelets.

On the other hand, the mesh members 11b, 12b are members woven in a mesh shape using wire, and are provided over almost the entire back surface of the sheets 11a, 12a. The outer peripheral shape of the mesh members 11b, 12b is, for example, a square. The mesh members 11b, 12b are attached to the sheets 11a, 12a by wrapping wire passed through each through hole 16a of the sheets 11a, 12a around the outer peripheral wire. The outer peripheral shapes of the sheets 11a, 12a and the mesh members 11b, 12b may be shapes other than a square (for example, a rectangle).

In the first sheet member 11, a front opening 15a is formed in the sheet 11a, and a back opening 15b (see FIG. 4(b)) is formed in the mesh member 11b. The front opening 15a and the back opening 15b are formed so as to overlap each other, forming the opening 15 of the first sheet member 11. The shape of the front opening 15a and the back opening 15b is, for example, a square. In the sheet 11a, a plurality of through holes 16b are also provided on each side of the edge of the front opening 15a. The mesh member 11b is also attached to the sheet 11a by wrapping a wire passed through each through hole 16b of the sheet 11a around the wire on the inner circumference. The shape of the opening 15 may be a shape other than a square (for example, a rectangle).

The first sheet member 11 also has a number of rope attachment parts 17 on its outer periphery to which wire ropes (hereinafter simply referred to as "ropes") 21 for suspension are attached. Specifically, the first sheet member 11 has rope attachment parts 17 at each corner. Each rope attachment part 17 is formed into a ring shape by the wire of the mesh member 11b.

The four ropes 21 are divided into two sets of two. One end of each set of ropes 21 is attached to a rope attachment portion 17, and the other end is attached to the same ring member 22. The two ropes 21 in one set are attached to rope attachment portions 17 at both ends of the first side 11c of the first sheet member 11, and the two ropes 21 in the other set are attached to rope attachment portions 17 at both ends of the second side 11d opposite the first side 11c.

Unlike the sheet 11a of the first sheet member 11, the sheet 12a of the second sheet member 12 is a sheet without an opening 15. The sheet 12a is smaller than the sheet 11a and larger than the front opening 15a (opening 15). For example, the length of one side of the sheet 11a of the first sheet member 11 can be 180 cm, the length of one side of the sheet 12a of the second sheet member 12 can be 120 cm, and the length of one side of the front opening 15a can be 60 cm. These dimensions are an example. The sheet 12a is overlapped on the back surface of the sheet 11a so that its center is approximately at the same position as the center of the sheet 11a. Around the front opening 15a, the overlapping margin L (see FIG. 1) of the sheet 12a with respect to the sheet 11a is approximately constant over the entire circumference. The dimension of the overlapping margin L will be described later.

The fixing portion 13 is composed of a plurality of clamp tubes 13 that fix the first side 12c of the second sheet member 12 to the first sheet member 11. Each clamp tube 13 is, for example, an aluminum clamp tube, and as shown in FIG. 2(b), it is possible to pass two wires extending in the same direction. Each clamp tube 13 passes the wire of the first side 12c of the mesh member 12b and the wire of the mesh member 11b at a position overlapping the first side 12c (the wire between one side of the outer circumference and one side of the inner circumference of the first sheet member 11), thereby fixing the mesh member 12b to the mesh member 11b. The fixing portion 13 may also fix the sheet 12a to the sheet 11a.

The connecting portion 14 is composed of a number of connecting ropes 14a attached to the second side 12d of the second sheet member 12, which is opposite the first side 12c, and a number of locking hooks (hanging devices) 14b attached to the rope 21 that suspends the first sheet member 11. In this embodiment, the connecting portion 14 is composed of two connecting ropes 14a and the same number of locking hooks 14b as the connecting ropes 14a.

Here, the second sheet member 12 has rope attachment parts 18 at each corner of the second side 12d. One end of the connecting rope 14a is attached to the rope attachment part 18 of the second sheet member 12. The other end of the connecting rope 14a is formed in a loop shape and is detachably hooked onto the lock hook 14b. Each lock hook 14b is provided on each rope 21 that suspends the side of the first sheet member 11 opposite to the side to which the second sheet member 12 is fixed (the side of the first side 11c, the left side in FIG. 2). Each lock hook 14b is attached to a loop-shaped part on one end of the rope 21. Each lock hook 14b may be attached to each rope attachment part 17 of the first sheet member 11, or may be attached to another member of the first sheet member 11.

[How to use the mokko]
Next, a method of using the mokko 10 will be described. The mokko 10 is placed on the ground with the first sheet member 11 side facing up in a state where it is connected by the connecting portion 14 (i.e., in a state where the loop-shaped portion on the other end of the connecting rope 14a is hooked on the lock hook 14b). Then, as shown in Fig. 3(a), soil and sand 5 are placed on the upper side of the mokko 10 as a load. The load may be crushed stone, snow, concrete rubble, scrap, etc.

Next, the two sets of ropes 21 are hooked by an operator onto the hanging part (such as a hook) 6 of a heavy machine such as a crane or a backhoe. In this state, when the hanging part 6 of the heavy machine is raised, the mokko 10 is lifted. As shown in FIG. 3(b), the first sheet member 11 is suspended from four points by the four ropes 21. Because the first sheet member 11 is connected by the connecting part 14, the opening 15 is kept closed by the second sheet member 12. In this state, the mokko 10 is transported by the heavy machine to the position where the soil 5 is to be unloaded.

Next, as shown in FIG. 4(a), the mokko 10 is lowered to a height where at least the center of the underside of the mokko 10 touches the ground. Then, the worker removes the loop on the other end of the connecting rope 14a from the lock hook 14b. In other words, the connection by the connecting part 14 is released. As a result, the second side 12d of the second sheet member 12 separates from the first sheet member 11 and touches the ground.

Next, when the hook 6 of the heavy machine is raised to lift the moccasin 10, the second sheet member 12 hangs down from the first sheet member 11, as shown in FIG. 4(b), and the opening 15 is opened wide to an open state. As a result, the soil 5 falls to the ground through the opening 15.

[Effects of this embodiment]
In this embodiment, the connection by the connecting portion 14 is made at a position outside the second side 12d of the second sheet member 12. Therefore, the connection by the connecting portion 14 can be released with the center of the underside of the mokko 10 in contact with the ground. In this case, when the connection is released, all of the soil 5 is not immediately discharged from the opening 15. Then, by lifting the mokko 10 from this state, the soil 5 can be discharged from the opening 15. Therefore, even if a worker performs the operation of releasing the connection at the connection point of the connecting portion 14, there is no danger from the soil 5, and the connection can be released directly. Therefore, the operation of lowering the soil 5 can be easily performed.

In this embodiment, when the mokko 10 is placed on a flat surface, the overlapping space L of the second sheet member 12 with respect to the first sheet member 11 is 20 cm or more. Here, the inventor of the present application conducted an experiment by changing the dimension of the overlapping space L, using soil 5 as a load. As a result, when the overlapping space L is 15 cm, when the mokko 10 is lifted in the closed state, the soil 5 falls from the opening 15 through the gap between the back surface of the sheet 11a and the front surface of the sheet 12a. In contrast, when the overlapping space L is 30 cm, the soil 5 does not fall from the opening 15. Therefore, the overlapping space L is set to 20 cm or more. In this embodiment, when the mokko 10 is lifted in the closed state, it is possible to prevent the soil 5 from falling from the opening 15 through the gap between the sheets 11a and 12a. Note that the larger the overlapping space L, the higher the material cost of the second sheet member 12 becomes, so it is desirable to set the overlapping space L to 45 cm or less.

In this embodiment, the connecting rope 14a and the lock hook 14b are detachably connected to one end of the rope 21 that suspends the first sheet member 11. In other words, the connection point of the connecting part 14 is in a position that is easily accessible to an operator from outside the trolley 10. Therefore, there is no danger from soil and sand 5, and an operator can easily disconnect the connecting part 14.

[Other embodiments]
In the above embodiment, the connection by the connecting portion 14 is made at a position outside the second side 12d of the second sheet member 12, but the connection may be made at the position of the second side 12d of the second sheet member 12. In this case, for example, the connecting portion 14 may be a fastener attached so as to straddle the first sheet member 11 and the second sheet member 12 along the second side 12d of the second sheet member 12.

In the above embodiment, the connecting portion 14 connects at two points, but the number of connecting points may be three or more.

In the above-described embodiment, one or both of the first sheet member 11 and the second sheet member 12 may not have the mesh members 11b and 12b and may be composed of only the sheets 11a and 12a. In other words, the present invention may be applied to a mosquito net other than a wire mosquito net.

The present invention is applicable to tents used for transporting soil and sand.

5. Soil and sand (cargo)
REFERENCE SIGNS LIST 10: Mokko 11: First sheet member 12: Second sheet member 13: Clamp tube, fixing part 14: Connection part 15: Opening 21: Wire rope (rope)

Claims (3)

A sack used for carrying things,
A first sheet member having an opening at a center portion and suspended at a plurality of points by ropes;
a second sheet member overlapped under the first sheet member so as to close the opening;
a fixing portion that fixes one side of the second sheet member to the first sheet member in a plan view;
a connecting portion that detachably connects the other side of the second sheet member in a plan view to the first sheet member or a member attached to the first sheet member,
When the hoist is lifted up after the connection is made by the connecting portion, the opening is kept blocked by the second sheet member,
When the mokko is lifted with the connection by the connecting portion released, the second sheet member hangs down from the first sheet member and the opening is opened. The mokko according to claim 1, wherein when the mokko is placed on a flat surface, the overlap of the second sheet member with the first sheet member is 20 cm or more. The mokko according to claim 1 or 2, wherein the connecting portion comprises a plurality of connecting ropes, one end of which is attached to the second sheet member, and a plurality of hooks that are attached to the outer periphery of the first sheet member or to the ropes and can detachably hook the connecting ropes.

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