JP4449042B2 - container - Google Patents

Description

  The present invention relates to a container having an intermediate floor that can be moved up and down in a cargo compartment.

  Conventionally, a container having an elevating floor capable of stacking two vehicles up and down in a cargo compartment has been invented (see, for example, Patent Document 1). In this way, by providing a liftable floor in the container, it becomes possible to select a vehicle loading layout relatively freely.

JP-A-6-100077 (Claim 7) and [Claim 9]

By the way, the conventional container equipped with an elevating floor is a vehicle, that is, a large heavy object, and therefore the floor elevating / lowering the floor, such as a cylinder, a wire, and a pulley for guiding the wire, are provided at four places on the front, rear, left and right. The structure concerning is also large.
Therefore, the present invention aims to simplify the structure related to the raising and lowering of the floor, so that the present invention is not limited to containers for transporting vehicles, but also for containers for transporting various other loads smaller than vehicles. It is possible to adopt a container having a floor, and to diversify the loading layout at the time of carrying various loads and to facilitate loading and unloading operations.

In order to solve the above problems, a container according to the present invention is a container having an intermediate floor that can be moved up and down in a cargo compartment, on two opposite side walls of the cargo compartment, on the diagonal line or in a direction substantially along the diagonal line. A cylinder fixed so as to expand and contract, a chain having one end locked to the cylinder shaft of the cylinder and the other end locked to the intermediate floor, and the side of the cylinder and the side wall of the chain Lifting means provided with a pulley that hangs around the end edge portion is provided.
According to the present invention, the cylinder is fixed to the side wall of the luggage compartment so as to expand and contract in a diagonal direction of the side wall or in a direction substantially along the diagonal line, thereby ensuring the maximum stroke of the cylinder in the side wall. Is possible. If the angle between the vertical direction of the intermediate floor (vertical direction) and the expansion / contraction direction of the cylinder is θ, the load received by the cylinder from the intermediate floor via the chain is such that the expansion / contraction direction of the cylinder is the vertical direction of the intermediate floor. When the cylinders are arranged in parallel, the load received by the cylinder is reduced to a value obtained by multiplying COSθ. Therefore, it is possible to reduce the driving force required for the cylinder and the cylinder driving mechanism, thereby simplifying the lifting means.

In the present invention, one end of the chain is locked to the cylinder shaft via a plate fixed to the tip of the cylinder shaft, and the plate is provided at least over the entire stroke of the cylinder shaft. Covered with a guide .
According to the present invention, at least the cylinder shaft and the plate fixed to the tip of the cylinder shaft are covered with the cylinder guide over the entire stroke of the expansion and contraction of the cylinder shaft and are not exposed to the cargo compartment. Moreover, if the plate fixed to the tip of the cylinder shaft is slidably guided by the cylinder guide, the expansion and contraction of the cylinder can be performed more smoothly and reliably.
The cylinder is disposed inside the side wall structure so as to partially cut off the vertical column of the side wall, and the cylinder guide also serves as a strength member of the container, so that the cylinder protrudes into the load chamber and loads the cylinder. It is possible to prevent a decrease in the strength of the container while preventing the volume of the chamber from being reduced.

Further, if the intermediate floor is provided with a guide plate that can be brought into sliding contact with the corner column of the container, the intermediate floor is stably held in the cargo compartment regardless of the position of the intermediate floor. It will be.
Further, if a stopper is provided to fix the intermediate floor at a position elevated by a predetermined height from the cargo floor, the intermediate floor is stably held in the cargo compartment at the elevated position. Become.

  Further, if a hydraulic circuit for driving the cylinder is mounted and an electric power supply means for connecting an electric motor for driving the hydraulic pump of the hydraulic circuit and an external power source is provided, electric power is supplied from the electric power supply means. The intermediate floor can be moved up and down in a place where it can be received.

  Since the present invention is configured as described above, not only a container for transporting a vehicle, but also a container for transporting various other loads smaller than a vehicle, a container having a liftable floor can be adopted. It is possible to promote the diversification of the loading layout and the ease of loading and unloading operations when conveying various loads.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
The container 10 according to the embodiment of the present invention includes an intermediate floor 14 that can be moved up and down in the cargo compartment 12 separately from the floor 13 of the cargo compartment. The container 10 includes doors 16 and 18 on one or both of the left and right side surfaces (FIGS. 1 and 3). And the elevating means 24 and 26 of the intermediate | middle floor 14 are provided in the wife side walls 20 and 22 (FIG.1, FIG.4, FIG.5). And the wife side walls 20 and 22 and the raising / lowering means 24 and 26 have the same structure fundamentally. Further, as shown in FIG. 1, the elevating means 24 and 26 are installed in a direction crossing each other when the container 10 is viewed in the front-rear direction.
For convenience of explanation, FIGS. 1 and 4 to 6 show both the intermediate floor 14 at the lower end position of the lifting range in close contact with the floor 13 of the cargo compartment and the intermediate floor 14 at the upper end position of the lifting range. At the same time. For convenience of explanation, FIG. 6 shows a state in which a cylinder shaft 28a is most contracted and a state in which the cylinder shaft 28a is most extended, which will be described later.

As shown in FIG. 6, the elevating means 24, 26 includes a hydraulic cylinder 28 that expands and contracts in a diagonal direction of the side walls 20, 22 or in a direction substantially along the diagonal line. The elevating means 24 and 26 include chains 30 and 32. In each of the chains 30 and 32, one end is locked to the cylinder shaft 28 a of the hydraulic cylinder 28, and the other end is locked to the right end or left end of the intermediate floor 14. Specifically, the chain 30 is hung from the side of the cylinder 28 via the pulley 34 along the end edges of the end walls 20, 22 and is locked to the intermediate floor 14. On the other hand, the chain 32 is hung from the side portion of the cylinder 28 through the pulleys 36 and 38 along the edge portions of the end walls 20 and 22 and is locked to the intermediate floor 14.
That is, the chain 30 is guided along the two sides of the side portion of the cylinder 28 and the vertical edge portions of the side walls 20 and 22, whereas the chain 32 is connected to the side portion of the cylinder 28, It is guided along the three sides of the upper edge of the end faces 20 and 22 and the edge part in the vertical direction, and the entire length thereof is longer than that of the chain 30. In this way, the chains 30 and 32 are provided with different lengths and different wrapping paths, and the cylinder shaft 28a is expanded and contracted, so that the right end portion or the left end portion of the intermediate floor 14 is raised and lowered simultaneously and by the same amount. Can always maintain the horizontal state.

  As shown in FIG. 6, the cylinder 28 is disposed inside the side wall structure so as to partially cut off the vertical columns 40, 42, 44 of the end side walls 20, 22. One end of the chains 30 and 32 is locked to the cylinder shaft 28a via a plate 46 (FIGS. 6 and 7) fixed to the tip of the cylinder shaft 28a. As shown in FIG. 6, an engagement hole 46 a for the cylinder shaft 28 a and an engagement hole for the chains 30 and 32 are arranged on the plate 46 side by side on the center line 46 c of the plate 46. Therefore, the chains 30 and 32 also pass through partially cut portions of the vertical columns 40, 42, and 44 in parallel with the cylinder 28, and are disposed inside the side wall structure. Further, the pulleys 34, 36, 38 around which the chains 30, 32 are hung are also arranged inside the side wall structure via the reinforcing plates 48, 50 fixed to the recessed portions between the vertical columns 40, 42, 44. Has been.

  Further, in order to arrange the cylinder 28 and the chains 30 and 32, the cylinder guide 52 is fixed so as to fill the divided portions formed in the vertical columns 40, 42 and 44 of the end walls 20 and 22. As shown in FIG. 8, the cylinder guide 52 has a closed cross-sectional shape by fixing a U-shaped cover top 52a and a flat cover bottom 52b with screws 52c. The cylinder guide 52 covers the cylinder 28, the cylinder shaft 28a, and the plate 46 fixed to the cylinder 28 over the entire stroke, and the cylinder guide 52 also serves as a strength member of the container. . The plate 46 preferably has an outer dimension that is slidably guided by the cylinder guide 52.

  As shown in FIG. 9, the intermediate floor 14 is provided with guide plates 56 and 58 that can slide on the corner pillars 54 located at the four corners of the container 10. The guide plates 56 and 58 are fixed to the side surface of the intermediate floor 14 through the brackets 60 and 62 so as to be orthogonal to each other, and are opposed to the two orthogonal surfaces of the corner post 54 with a slight gap therebetween. ing. In addition, the part shown with the code | symbol 64 in FIG. 9 is an attachment bracket for latching the edge part of the chains 30 and 32 to the intermediate floor 14 (refer FIG. 12).

  In addition, as shown in FIGS. 1, 10, and 11, the container 10 is provided with a single stopper 66 for fixing the intermediate floor 14 at a position elevated by a predetermined height from the floor 13 of the cargo compartment. It has been. The stopper 66 is manually set between the upper surface of the cargo floor 13 and the lower surface of the intermediate floor 14 when the intermediate floor 14 is at a predetermined raised position. The structure is such that a cylindrical upper column 66 a is inserted with a telescopic upper column 66 b via a turnbuckle 66 c, and the lower column 66 a and the upper column 66 b are fixed by a stop pin 67. Further, flanges 66d and 66e are fixed to the lower end portion of the lower support column 66a and the upper end portion of the upper support column 66b, respectively. As shown in FIG. 11 in an enlarged manner, the flange 66e provided at the upper end of the upper column 66b is engaged with the intermediate floor 14a by being fitted into the key hole 14a provided in the intermediate floor 14. Further, the flange 66d of the lower column 66a and the floor 13 of the cargo compartment have the same engagement relationship. Then, the intermediate floor 14 is urged downward by shrinking the turnbuckle 66c.

FIG. 12 shows another form of stopper 68. The stopper 68 is a bar fixed to the parts fixed to the intermediate floor 14 such as the mounting bracket 64, and the stopper 68 is fixed to the corner post 54 of the container 10, an outer plate reinforcing portion (not shown), or the like. The intermediate floor 14 is supported by engaging with receiving grooves 69a provided at equal intervals.
As shown in FIG. 12, when the intermediate floor 14 is located at a predetermined height from the floor 13 of the cargo compartment, a bracket 70 (see FIG. 12) that fixes the intermediate floor 14 to the four corner pillars 54. 12), the bracket 70 is fixed to the corner post 54 with a screw 72, and the intermediate floor 14 is fixed by using the stoppers 66 (FIG. 10) and 68 (FIG. 12) together. The floor 14 is surely fixed at the raised position.

The container 10 is equipped with a hydraulic circuit 72 for driving the cylinder 28 as shown in FIG. A power unit 78 including an electric motor 76 for driving the hydraulic pump 74 of the hydraulic circuit 72 is mounted. The hydraulic pipe 79A related to the extension operation of the cylinder 28 and the hydraulic pipe 79B related to the shortening operation of the cylinder 28 are also schematically shown in FIG.
Further, as schematically shown in FIG. 1, the container 10 operates a power supply plug (power supply means) 82 and an electric motor 76 for connecting the power unit 78 (FIG. 13) to the external power supply 80. A pendant switch 84 for raising and lowering the intermediate floor 14 and a storage box 86 for the pendant switch 84 are provided. In addition, the part shown with the code | symbol 88 in FIG. 1 is a fuse box. These power unit 78, power supply plug 82, pendant switch 84, storage box 86, and fuse box 88 can all be operated and inspected from the outside of the container 10. As the external power source 80, for example, a truck that carries the container 10 or an in-vehicle battery such as a trailer is used.

  When the cargo handling operation is performed on the container 10, first, the intermediate floor 14 is lowered to a position where the intermediate floor 14 comes into close contact with the upper surface of the floor 13 of the cargo room, and a load is loaded on the intermediate floor 14. Subsequently, the intermediate floor 14 is raised to a predetermined raised position, and the intermediate floor 14 is fixed. At this time, the cargo handling operation with respect to the floor 13 of the cargo compartment is performed by making the gap between the lower surface of the intermediate floor 14 and the upper surface of the floor 13 of the cargo compartment larger than the distance between the upper surface of the intermediate floor 14 and the ceiling surface of the cargo compartment. Can be performed smoothly. When unloading, after unloading the cargo loaded on the floor 13 of the cargo compartment, the intermediate floor 14 is lowered to a position in close contact with the upper surface of the floor 13 of the cargo compartment, and the cargo loaded on the intermediate floor 13 is lowered. By unloading, cargo handling work can be performed smoothly.

According to the embodiment of the present invention having the above-described configuration, the following operational effects can be obtained.
First, the cylinder 28 is fixed to the side walls 20, 22 of the luggage compartment 12 so as to expand and contract in a diagonal direction of the side walls 20, 22 or in a direction substantially along the diagonal line. It is possible to secure the maximum stroke. When the angle between the vertical direction of the intermediate floor 14 and the expansion / contraction direction of the cylinder 28 is θ, the load received by the cylinder 28 from the intermediate floor 14 via the chains 30 and 32 is the expansion / contraction direction of the cylinder 28. Is reduced to a value obtained by multiplying the load received by the cylinder 28 when it is arranged in parallel with the raising / lowering direction of the intermediate floor by COSθ. Therefore, it becomes possible to reduce the driving force required for the cylinder 28 and the cylinder driving mechanism (hydraulic circuit 72, hydraulic pump 74, electric motor 76, etc.), and the lifting means 24, 26 can be simplified (smaller and lighter, (Lowering the specification). Therefore, it is possible to adopt a container having a liftable floor as a container for transporting various loads, thereby diversifying the loading layout and facilitating loading and unloading operations when transporting various loads. It becomes possible.

  In addition, as shown in the illustrated example, when the structure in which the horizontal state of the intermediate floor 14 is ensured using the two chains 30 and 32, the load transmitted from both the chains to the cylinder 28 is equalized. In addition, the angle θ needs to be 45 °. Therefore, the installation location and the installation direction of the cylinder 28 (on the diagonal line of the side wall of the cargo compartment or the direction substantially along the diagonal line) satisfy the angle θ = 45 °, and the necessary stroke for the cylinder 28 can be ensured. It becomes possible installation location and installation direction.

One end of each of the chains 30 and 32 is locked to the cylinder shaft 28a via a plate 46 fixed to the tip of the cylinder shaft 28a. The plate 46 is provided over at least the entire stroke of the cylinder shaft 28a. The cylinder guide 52 is covered. Accordingly, the cylinder shaft 28a and the plate 46 and the portions of the chains 30 and 32 along the cylinder 28 and the cylinder shaft 28a are covered with the cylinder guide 52 over the entire stroke when the cylinder shaft 28a is expanded and contracted, and may be exposed in the cargo compartment. Disappear. Therefore, it is possible to reliably avoid problems caused by the interference between the lifting means 24 and 26 and the load. Moreover, if the plate 46 fixed to the tip of the cylinder shaft 28a is slidably guided by the cylinder guide 52, the expansion and contraction of the cylinder 28 can be performed more smoothly and reliably.
Further, the cylinder 28 is disposed inside the side wall structure so as to partially cut the vertical columns 40, 42, 44 of the side walls 20, 22, and the cylinder guide 52 also serves as a strength member of the container 10. 28, the chains 30, 32, and the pulleys 34, 36, 38 project into the luggage compartment 12 to prevent the volume of the cargo compartment 12 from being reduced, and the strength of the container 10 can be prevented from decreasing.

In addition, since the intermediate floor 14 is provided with guide plates 56 and 58 that can be brought into sliding contact with the corner pillar 54 of the container 10, the intermediate floor 14 can be loaded regardless of the position of the intermediate floor 14. 12 will be held stably within 12. Therefore, even when the container 10 is moving, the intermediate floor 14 is stabilized in the cargo compartment, and the collapse of the load placed on the intermediate floor 14 can be prevented.
In addition, since the stoppers 66 and 68 are provided to fix the intermediate floor 14 at a position elevated by a predetermined height from the floor 13 of the cargo compartment, the intermediate floor 14 is stable in the cargo compartment 12 at the elevated position. Will be held.

  Further, the container 10 is provided with a hydraulic circuit 72 for driving the cylinder 28 and provided with a power feeding means for connecting the electric motor 76 for driving the hydraulic pump 74 of the hydraulic circuit 72 and the external power source 80. Thus, the intermediate floor 14 can be moved up and down at any time where power can be supplied from the power supply means 80.

In the embodiment of the present invention, a structure that maintains the horizontal state of the intermediate floor 14 by using two chains 30 and 32 for the lifting means 24 and 26, respectively, is adopted. Therefore, if the horizontal state of the intermediate floor 14 is maintained, even one lifting chain can be established. In this case, the inclination angle θ of the cylinder 28 that drives the elevating chain is not limited to 45 °.
Further, in the embodiment of the present invention, the case where a hydraulic cylinder is used as the cylinder 28 has been described as an example, but this may be an electric cylinder.

It is a perspective view of the container concerning an embodiment of the invention. It is a top view of the container shown in FIG. It is a side view of the container shown in FIG. It is a wife side view of the container shown in FIG. It is a wife side view on the opposite side to FIG. It is a wife side view by the side of the luggage compartment of the container shown in FIG. It is a top view of the plate fixed to the cylinder shaft front-end | tip part of the cylinder which comprises the raising / lowering means of the container shown in FIG. It is a disassembled sectional view which shows the cylinder guide of the cylinder which comprises the raising / lowering means of the container shown in FIG. It is a top view which shows the opposing part vicinity of the corner pillar and intermediate | middle floor of the container shown in FIG. It is a side view of the stopper which fixes the intermediate | middle floor of the container shown in FIG. 1 to the position raised only predetermined height from the floor of the cargo compartment. It is an enlarged view which shows the upper end part of the stopper shown in FIG. It is a perspective view which shows the stopper of another form from FIG. It is a hydraulic circuit diagram of the cylinder which comprises the raising / lowering means of the container shown in FIG.

Explanation of symbols

10: Container, 12: Cargo compartment, 13: Cargo floor, 14: Intermediate floor, 20, 22: Wife side wall, 24, 26: Lifting means, 28: Cylinder, 28a: Cylinder shaft, 30, 32: Chain, 40, 42, 44: Vertical column, 46: Plate, 52: Cylinder guide, 54: Corner column, 56, 58: Guide plate, 66, 68: Stopper, 72: Hydraulic circuit, 74: Hydraulic pump, 76: Electric motor , 82: Power supply plug

Claims (4)

A container having an intermediate floor that can be moved up and down in a cargo compartment, the cylinder being fixed to two opposite side walls of the cargo compartment so as to expand or contract in a direction along or substantially along the diagonal line; Lifting means comprising a chain having one end locked to the cylinder shaft and the other end locked to the intermediate floor, and a pulley that hangs the chain along the side of the cylinder and the edge of the side wall. Is provided,
One end of the chain is locked to the cylinder shaft via a plate fixed to the tip of the cylinder shaft, and the plate is covered with a cylinder guide provided at least over the entire stroke of the cylinder shaft. ,
The container is characterized in that the cylinder is disposed inside the side wall structure so as to partially cut the vertical column of the side wall, and the cylinder guide also serves as a strength member of the container. The container according to claim 1, wherein the intermediate floor is provided with a guide plate capable of sliding contact with a corner column of the container. The container according to claim 1 or 2, wherein a stopper is provided to fix the intermediate floor at a position elevated by a predetermined height from the floor of the cargo compartment. Is a hydraulic circuit is mounted for driving the cylinder, and any of claims 1-3, characterized in that the feeding means for connecting the electric motor and an external power source for driving the hydraulic pump of the hydraulic circuit is provided Item 1. Container.

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