JP2019211004A - Structure for fixing high-pressure gas container and hydrogen trailer - Google Patents

Abstract

To provide: a fixing structure for high-pressure gas containers which is advantageous in arranging a plurality of high-pressure gas containers in a compact fashion within a limited space and stably fixing the containers; and a preferable hydrogen trailer having the fixing structure.SOLUTION: A fixing structure is a structure for fixing a plurality of high-pressure gas containers 1, each including a cylindrical trunk 1a. A constraining member 10 having a regular hexagonal outer shape in which a distance between two parallel opposed sides is not less than a diameter of the trunk 1a is fitted into the individual high-pressure gas containers 1. The constraining member 10 is coupled to another similar constraining member 10 or a fixing frame.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a high-pressure gas container fixing structure for fixing a plurality of high-pressure gas containers, and a hydrogen trailer that carries and transfers a plurality of high-pressure gas containers filled with hydrogen.

  As hydrogen vehicles (including fuel cell vehicles) become widespread, it will be necessary to provide hydrogen stations for supplying hydrogen to them. In order to ship hydrogen to hydrogen stations in various places, a hydrogen trailer suitable for transporting hydrogen over land is required. The hydrogen trailer is not only used for transporting hydrogen to the hydrogen station, but also can be used as a supply source to the hydrogen vehicle by being placed in the hydrogen station.

  An example of a vehicle that can be used as a hydrogen trailer or the like is described in Patent Document 1 below. The vehicle described in the document 1 has a three-dimensional mount placed on a loading platform, and a plurality of high-pressure gas containers are mounted on the mount. Each of the high-pressure gas containers is provided with a neck portion at both ends of the cylindrical body (container body) (the main valve side serving as the gas supply port and the opposite side) provided at respective positions before and after the above-mentioned frame. It is fixed by the member. The restraining members are stacked in a plurality of stages in the vertical direction in such a manner that a plurality of high-pressure gas containers are horizontally arranged and fixed, and another container is disposed immediately above each container.

  An example of a restraining member that fixes neck portions at both ends of the high-pressure gas container is also described in Patent Document 2. The use situation of the restraint member shown in the literature 2 is shown in FIG. The small-diameter neck portion at the end of the cylindrical body portion of the high-pressure gas container is fixed by being restrained by a restraining member. The restraining member includes a rectangular plate having a sufficient thickness, a U-shaped bolt attached to the inside of the thickness of the plate, and the like. The bolt is attached to the square plate in a state of being hung in a groove on the outer periphery of the neck portion. The plate is larger in both vertical and horizontal dimensions than the diameter of the body of the high-pressure gas container, so by fixing the plate side by side, multiple high-pressure gas containers can be fixed without contacting each other. is there.

Japanese National Patent Publication No. 8-510428 Japanese Patent No. 4414376

  When a high-pressure gas container is mounted on a trailer as described in Patent Document 1, it is desirable that a plurality of containers can be arranged in a compact manner and can be stably fixed. If it can be arranged compactly, a large number of high-pressure gas containers can be installed in a limited space, and the trailer can be downsized or have a low center of gravity in the trailer. Moreover, if it is easy to fix stably, the structure for supporting a container can be simplified.

  In this regard, there is still room for improvement in the fixing structure of the high-pressure gas container described in Patent Documents 1 and 2. In the example of the document 1, since the structure is such that another high-pressure gas container is disposed immediately above the high-pressure gas container, when arranging a plurality of stages in the vertical direction, the diameter and container of each container per stage. The total height dimension with the gap to avoid contact with each other becomes indispensable, and the mounting height tends to increase. In the example of the same document 2, a plurality of high-pressure gas containers are arranged vertically by placing another plate (restraint member) on a plate that is a restraint member. This is the same as in Reference 1.

  The invention according to the claims is directed to a high-pressure gas container fixing structure that is advantageous in stably arranging and fixing a plurality of high-pressure gas containers in a limited space, and a preferred hydrogen having such a fixing structure. A trailer is provided.

The fixing structure of the high-pressure gas container according to the invention is a structure for fixing a plurality of high-pressure gas containers having a cylindrical body, and a regular hexagon in which the distance between two parallel sides facing each other is equal to or larger than the diameter of the body. A constraining member having an external shape is fitted to each high-pressure gas container, and the constraining member is connected to another similar constraining member or a fixing frame.
The above-mentioned restraining member having a regular hexagonal shape (regular hexagon or substantially regular hexagon) is like the restraining member 10 shown in FIGS. 1 and 2, for example, in the high-pressure gas container 1 having a cylindrical body. It is used by being fitted and coupled to another restraining member 10 as shown in FIG. 3 or to the fixing frame 30 shown in FIG.
When the restraining member as described above is fitted to the outside of each high-pressure gas container (any part thereof, for example, a cylindrical body portion or a small-diameter neck portion at both ends thereof), a plurality of high-pressure gas containers as shown in FIG. When the gas containers are arranged so as not to contact each other, the distance in the height direction of the container center line (height direction dimension per stage) can be suppressed to less than the diameter of each container. That is, as shown in FIG. 9 (a), when using the restraining member 10 according to the invention, the distance D in the height direction between the center lines of the container 1 should be less than or equal to the diameter of the container 1 (the body part 1a). it can. If the other container 1 is arranged immediately above one container 1 as in the prior art (FIG. 9B), the distance D ′ in the height direction of the container 1 is always greater than or equal to the diameter of the container 1. The use of the member 10 allows a compact arrangement of the container 1. When the restraint member 10 is used by changing the hexagonal direction by 90 ° from the example of FIG. 9A, FIG. 3 or the like, the interval between the container center lines in the left and right adjacent rows is set to the diameter of each container. Can be kept below.
If the vertical and horizontal intervals can be reduced as described above, a large number of high-pressure gas containers can be effectively installed in a limited space. When a large number of high-pressure gas containers are mounted on a traveling vehicle such as a hydrogen trailer, the vehicle can be downsized, and the overall safety including the container can be lowered to increase traveling safety. Even when the high-pressure gas container is installed not in the hydrogen trailer but in another object or area, the fixed structure of the invention enables a compact arrangement of a large number of containers.

In the above fixing structure, in particular, each of the high-pressure gas containers has a neck portion having a diameter smaller than that of the barrel portion at the end of the cylindrical barrel portion, and the restraining member is fitted to the neck portion. It is preferable that it is.
It is easier to restrain the high-pressure gas container by fitting the restraining member in the neck portion having a smaller diameter than the body portion. Even if a U-shaped bolt or the like is used for restraining as exemplified in Patent Document 2 (FIG. 10), the size of the bolt can be made smaller than when restraining the body portion, and handling becomes easy. . In addition, the neck part is also easily equipped with a reinforcing structure to avoid scratching when restrained.

In addition, each of the six peripheral edges forming the outer shape (regular hexagonal shape) of the constraint member is provided with a coupling component or a coupling hole that enables coupling with the other constraint member or the fixing frame. preferable. For example, as shown to Fig.1 (a), it is good to provide the coupling hole 11a for bolts in each side of a hexagon.
When the coupling parts and the coupling holes are provided on the hexagonal sides of the restraining member as described above, it becomes easy to couple the restraining member to another restraining member and the fixing frame. For example, by using the coupling hole 11a of FIG. 1 (a) and passing the bolt 11b between the adjacent restraining members 10 as shown in FIG. 3, a plurality of high-pressure gas containers are arranged on the left, right, top and bottom. Can be linked. In addition, the high-pressure gas container can be connected to the fixing frame 30 as shown in FIG. 6 by using the coupling hole 11 a in a portion not adjacent to the other restraining member 10.

When each of the high-pressure gas containers has a neck portion having a diameter smaller than that of the barrel portion at the end of the cylindrical barrel portion, the restraining member has a short cylindrical outer peripheral frame having a hexagonal cross section, It is preferable to have a panel fixed inside the outer peripheral frame, and a bracket attached to the panel and attached to the neck portion of each high-pressure gas container.
The restraining member 10 shown in FIG. 1 and the like is an example, and a short cylindrical outer peripheral frame 11 having a hexagonal cross section, a panel 12 fixed to the inside thereof, a panel 12 and an attachment of each high-pressure gas container 1. And a bracket 13 attached to the neck portion 1b.
Such a restraining member can be inexpensively configured as a lightweight member using a commercially available metal material such as a steel plate. Further, if a U-bolt or the like described in Patent Document 2 is passed through a bracket attached to the panel by welding or a fastener, or another fastening tool is attached, for example, in the state of FIG. The neck portion can be restrained appropriately.

A state in which the restraining member fitted to the high-pressure gas container is overlapped with any one of the six peripheral edges forming the outer shape of the other restraining member fitted to the other high-pressure gas container. And one or a plurality of fixing frames may be coupled in a state in which any side that is not coupled to another restraining member is overlapped. That is, it is preferable that the restraining members and the restraining member and any one of the fixing frames are coupled as shown in FIGS. 5 and 6, for example.
When the restraint member is coupled in such a state, the plurality of high-pressure gas containers are strongly connected to each other and stably fixed. In the state where the restraining members are coupled to each other, the hexagonal peripheral portions attached to the respective high-pressure gas containers are in contact with each other via a plurality of inclined surfaces having different directions, for example, at the same height. This is because it is difficult for the high-pressure gas containers at each stage to be displaced in the horizontal direction.

The upper fixing frame in which each of the restraining members fitted to the high-pressure gas container is coupled to another restraining member and a fixing frame with the axis being horizontal, and is coupled to the upper part of the uppermost restraining member. It is also preferable to adopt a structure in which also serves as a lifting member. That is, as in the example of FIG. 5, the axis of the restraining member 10 (and the high-pressure gas container 1) is horizontal, and the restraining members 10 and the restraining member 10 and the fixing frame 30 are coupled together. An upper fixing frame 40 that also serves as a lifting member is coupled to the upper portion of the member 10.
As described above, the high-pressure gas containers of the respective stages that are joined side by side in the horizontal direction (a set of four or five in the example of FIG. 5), or the entire high-pressure gas containers joined in the horizontal direction and the vertical direction (FIG. 5). In this example, a set of 23) can be easily lifted using an upper fixing frame coupled to the upper portion. If the high-pressure gas container can be easily lifted in such a manner, the operation of connecting and fixing a plurality of containers or releasing the connected state can be easily performed in a short time. The upper fixing frame that also serves as a lifting member is integrally provided with a connecting piece (reference numeral 44 in FIG. 5) having a downward hypotenuse that is coupled to each hypotenuse on the upper portion of each restraining member. Good.

As a hydrogen trailer for mounting and transferring a plurality of high-pressure gas containers filled with hydrogen, it is preferable that a plurality of such containers are combined and mounted on a carriage using any one of the above-described fixing structures.
In such a hydrogen trailer, a plurality of high-pressure gas containers are housed in a compact space and are strongly and stably connected to each other. Since the mounting height of the high-pressure gas container can be suppressed, there is an advantage that the trailer is stabilized by lowering the center of gravity.

According to the high pressure gas container fixing structure according to the invention, when arranging a plurality of high pressure gas containers, it is possible to narrow the interval in the vertical direction or the horizontal direction, and to effectively install a large number of high pressure gas containers in a limited space. can do. Since the restraining members or the restraining member and the fixing frame are coupled in contact with each other via a plurality of inclined surfaces having different directions, the plurality of high-pressure gas containers are strongly connected and stably fixed.
According to the hydrogen trailer of the invention, a plurality of high-pressure gas containers are housed in a compact space and are strongly and stably connected to each other. This is also advantageous in reducing the size of the vehicle or lowering the center of gravity.

It is a perspective view which shows the high pressure gas container 1 and the restraint member 10 used for the fixing structure of invention. FIG. 1A shows an outer peripheral frame 11 and a panel 12 in the restraining member 10, and FIG. 1B shows a pair of restraining members 10 including a bracket 13 and a U-shaped bolt 14, one high-pressure gas container 1, and the like. Indicates. It is a perspective view which shows the state by which the restraint member 10 was each fitted by the neck part 1b in the both ends of the high pressure gas container 1. FIG. It is a perspective view which shows the connection body 20 of the high pressure gas container 1 to which the high pressure gas container 1 of the plurality of the horizontal stage and the upper and lower stages was combined using the restraint member 10. FIG. 4 is a perspective view showing a fixing frame 30 for fixing a plurality of high-pressure gas containers 1 inside the frame. It is a perspective view which shows the fixation point in the case of couple | bonding and fixing the several high pressure gas container 1 (connector 20) using the restraint member 10, the flame | frame 30 for fixation, etc. FIG. It is a perspective view which shows the structure 50 of the high pressure gas container 1 fixed in the way shown in FIG. It is a side view which shows the hydrogen trailer A which mounts the several high pressure gas container 1 fixed like FIG. It is a side view which shows the hydrogen trailer B different from FIG. 7 which mounts the several high pressure gas container 1 fixed like FIG. FIGS. 9A and 9B are schematic views showing a state in which the high-pressure gas containers 1 are arranged horizontally and vertically, and FIG. 9A is an example in which the restraining member 10 according to the invention is used, and FIG. 9B is an example in which the conventional restraining member is used. Indicates. It is a perspective view which shows a use condition about the restraint member described in patent document 2. FIG.

  1 to 8 show an embodiment of the invention. In this example, a fixed structure in which a plurality of high-pressure gas containers filled with a high-pressure gas such as hydrogen in a cylindrical body portion are horizontally aligned and coupled and fixed in a compactly arranged state using a restraining member or the like. Indicates.

First, FIG. 1 shows a high-pressure gas container 1 and a restraining member 10 attached thereto.
As shown in FIG. 1B, the high-pressure gas container 1 has a cylindrical (substantially cylindrical) body portion 1a, and is provided with neck portions 1b having a diameter smaller than that of the body portion 1a at both ends thereof. Yes, the body 1a is filled with high-pressure gas. The high-pressure gas container 1 is a composite container in which a fiber layer such as carbon fiber is laminated outside a lightweight metal container such as an aluminum alloy, and can be filled with hydrogen or the like at a pressure of 350 atm or more. One of the neck portions 1b at both ends is provided with a main valve (not shown) for gas supply.

  As shown in FIG. 1 (b), the restraining member 10 to be mounted on the neck portion 1b of the high-pressure gas container 1 is fixed to the short cylindrical outer peripheral frame 11 having a regular hexagonal cross section by welding. The panel 12 and a bracket 13 attached to one surface of the panel 12 by welding or bolts (not shown), and the like. The outer peripheral frame 11, the panel 12, and the bracket 13 are all formed of a steel plate or the like. For example, the outer peripheral frame 11 may be formed by bending a strip-shaped steel plate (strip steel) and welding the ends to form a short cylinder having a regular hexagonal shape (a curved portion is provided at a corner). The distance between two parallel faces (between outer surfaces) of the outer peripheral frame 11 is made larger than the diameter of the body portion 1 a of the container 1. Further, as shown in FIG. 1 (a), two through holes 11a for coupling are provided at the peripheral edge portion forming each side of the outer peripheral frame 11 (each of six sides forming a hexagon).

  In the panel 12 and the bracket 13, a hole 12 a through which the neck portion 1 b of the container 1 can be passed is formed at the center of the outer peripheral frame 11 in a state integrated with the restraining member 10. The panel 12 is also provided with an observation hole 12b so that the body 1a and the like of the container 1 can be seen from the outside (end side). In addition, a steel plate having a sufficient thickness is used as the bracket 13, and a U-shaped bolt 14 is passed in the thickness direction so that it can be fastened to the bracket 13 with a nut 15.

  If the neck portion 1b of the high-pressure gas container 1 is passed through the hole in the center of the panel 12 and the bracket 13, the bolt 14 is hung on the neck portion 1b and passed through the bracket 13, and then the bolt 14 is fixed with a nut 15 (FIG. 1). (Refer to (b)), the restraining member 10 is fitted to the neck portion 1b. FIG. 2 shows a state in which the restraining members 10 are fitted to both end portions of the high-pressure gas container 1 as described above. As for the pair of restraining members 10 fitted to one high-pressure gas container 1, the outer peripheral frame 11 does not have an angular difference and the sides forming a hexagon are in the same plane.

  The restraining member 10 preferably includes a bearing structure including a spherical member so that the angle of the neck portion 1b can be changed due to the deflection of the container 1 or the like. Further, in order to cope with the fact that the length of the container 1 can change according to temperature and pressure, one of the pair of restraining members 10 used for one container 1 slidably supports the neck portion 1b. It should be.

As shown in FIG. 2, the high-pressure gas container 1 in which the restraining members 10 are fitted to both ends is compacted by connecting the restraining members 10 to each other in a similar manner. Can be connected to each other. FIG. 3 shows a connecting body 20 in which a plurality of high-pressure gas containers 1 are arranged side by side and vertically, and are connected in parallel so that they do not come into contact with each other, with the restraining member 10 having a horizontal axis. Yes. It is good to combine so that the side of the main valve may become the same direction about each container.
In addition, in this example, it arrange | positions so that two sides of each restraint member 10 (periphery frame 11) may become perpendicular | vertical, and the restraint members 10 of the adjacent high-pressure gas container 1 are couple | bonded with right and left and diagonally up and diagonally downward. ing. That is, one side of the outer peripheral frame 11 which is adjacent and in contact with each other is joined by attaching a bolt / nut 11b to a through hole 11a provided on each side.

  When stacking a plurality of containers 1 on the upper and lower sides, as shown in the figure, a space for half of the restraining member 10 is vacated at each of the left and right ends every other stage, but the regular hexagon is divided in half. An alternative frame 18 having a trapezoidal shape may be combined. The alternative frame 18 is also provided with a through hole 18a on each side, and is coupled to the adjacent outer peripheral frame 11 using the hole 18a. Although it is not necessary to attach such an alternative frame 18 to the vacant space, the strength of the coupling of the connecting body 20 is improved by attaching it.

  When the coupling body 20 as shown in FIG. 3 is inserted into the fixing frame 30 as shown in FIG. 4 and coupled thereto, the strength of the coupling is further increased. The fixing frame 30 is obtained by attaching two end frames 32 and 33 made of shape steel extending upward to the upper surface of a base plate 31 made of steel plate. Side support columns are integrally provided at the left and right positions of the end frames 32 and 33, and through holes 32a and 33a are formed in the support columns, respectively. On the upper surface of the base plate 31, a plurality of support frames 34 having two symmetrical sides sandwiching an apex angle of 120 ° are provided on the upper portion at positions just below the end frames 32 and 33, with an interval therebetween. Through holes 34a are also formed on each side. The through holes 32a, 33a, and 34a are located at positions that communicate with the through holes 11a of the restraining member 10 (outer peripheral frame 11) located at the left and right ends and the lowermost stage of the coupling body 20 in FIG. The coupling body 20 and the fixing frame 30 are coupled to each other through bolts (not shown).

  The connecting body 20 (FIG. 3) and the fixing frame 30 (FIG. 4) of the high-pressure gas container 1 can be combined as shown in FIG. 5, for example. That is, the connecting body 20 formed by joining a plurality of high-pressure gas containers 1 as shown in FIG. 3 is incorporated inside the end frames 32 and 33 of the fixing frame 30 shown in FIG. Then, the connecting body 20 is coupled to the fixing frame 30 and the upper fixing frame 40 is coupled to the upper end portion. The upper fixing frame 40 has parallel arms 41 and 42 extending to the left and right attached to a connecting beam 43. The lower surface of each arm 41 and 42 has two symmetrical sides sandwiching the apex angle of 120 ° below. A plurality of downward-facing support frames 44 are provided at intervals. Through holes 44a are also formed in the lower sides of these support frames 44. These through holes 44a are connected to the through holes 11a of the uppermost restraining member 10 (outer peripheral frame 11) in the connecting body 20 to provide bolts. (The illustration is omitted). Further, both ends of the arms 41 and 42 can be connected to the end frames 32 and 33 of the fixing frame 30 by bolts. When each of the above bolts is used for connection, the connecting body 20 of the high-pressure gas container 1 is integrated with the fixing frames 30 and 40 on both the left and right sides and the upper and lower sides, and is stably fixed. It becomes. FIG. 6 shows a structure 50 to which the connecting body 20 and the like are fixed as such.

FIG. 5 illustrates a mode in which a plurality of connecting bodies 20 in a state where a plurality of high-pressure gas containers 1 are coupled horizontally and vertically are combined in a frame of a fixing frame 30. If the upper fixing frame 40 is provided with a portion suitable for lifting and the mechanical strength of the frame 40 is sufficiently high (and other reinforcing means are used in combination), a plurality of the connected bodies 20 are provided. The high-pressure gas containers 1 can be collectively lifted at a time and stored in the frame 30 for fixing.
However, the high-pressure gas container 1 is coupled to the lower part of the upper fixing frame 40 for each stage, not in a plurality of stages, and is lifted and accommodated in the frame of the fixing frame 30 (upper and lower restraining members each time). It is also possible to connect to the state shown in FIG. 6 by repeating the procedure of (combining 10). In any case, if the upper fixing frame 40 can also serve as a lifting member, it is easy to lift the high-pressure gas container 1 and accommodate it in the frame of the fixing frame 30.

  A hydrogen trailer A which is one embodiment of the invention is shown in FIG. The illustrated hydrogen trailer A is a means for supplying hydrogen to a hydrogen vehicle (including a fuel cell vehicle) that uses hydrogen as fuel, and is loaded with a high-pressure gas container 1 filled with hydrogen and transported to a hydrogen station. In addition, it is placed in a hydrogen station to supply hydrogen to hydrogen vehicles. When transporting, it travels by being pulled by a tractor as shown in the figure.

  The hydrogen trailer A in FIG. 7 has a plurality of the high-pressure gas containers 1 fixed and mounted on the carriage in the state (structure 50) in FIG. That is, the high-pressure gas container 1 in which the restraining member 10 shown in FIG. 1 is fitted to the neck portions 1b at both ends as shown in FIG. 2 is joined to the connecting member 20 shown in FIG. The upper fixing frame 40 is coupled to the upper end portion as shown in FIG. 5 in the state shown in FIG. It is mounted on the carriage so that the axis of Such a hydrogen trailer A is preferable in that a plurality of high-pressure gas containers 1 are mounted in a compact state (particularly suppressing the overall height) and firmly fixed.

  FIG. 8 shows another hydrogen trailer B which is also an embodiment of the invention. 7 is used for the same purpose as the hydrogen trailer A in FIG. 7, but the hydrogen trailer B in FIG. 8 includes two sets of structures 50 in which a plurality of high-pressure gas containers 1 are coupled as shown in FIG. It is mounted at intervals. In the illustrated example, the structure 50 attached to the front position of the carriage has a lower number of upper and lower stacking stages of the high-pressure gas container 1 than the structure 50 behind (the structure 50 in FIG. 6).

  In each of the two sets of structures 50 mounted, the high-pressure gas container 1 is fixed in the same direction. However, the front structure 50 and the rear structure 50 have different directions of the high-pressure gas container 1. . That is, in the structure 50 placed in front of the carriage, any container 1 has the main valve side facing backward, and in the structure 50 placed in the rear, any container 1 has the original valve side facing forward. . That is, all the containers 1 in the front structure 50 and all the containers 1 in the rear structure 50 are arranged so that the original valve sides face each other. A space is provided between the front and rear structures 50 so that an operation space 55 sufficient for an operator to enter is provided between the front and rear sets of containers 1.

On the main valve side of each high-pressure gas container 1, it is necessary to perform valve operations related to supply / stop of hydrogen. However, as described above, the valve operations for all the containers 1 in both the front and rear sets are performed as described above. The operation can be efficiently performed in the operation space 55 at the location. In particular, in a large hydrogen trailer, there may be a case where three or more sets of structures 50 are mounted. In such a case as well, the original valve side of the container 1 sandwiches the operation space between any two sets adjacent to the front and rear. It is good to arrange so as to face each other.
7 and 8, the various instruments and operation valves connected to the main valve of the high-pressure gas container 1 via piping are located near the rear end on the carriage. It is good to install collectively.

DESCRIPTION OF SYMBOLS 1 High pressure gas container 1a trunk | drum 1b neck part 10 restraint member 11 outer periphery frame 11a through-hole 12 panel 13 bracket 14 U-shaped bolt 20 coupling body 30 fixing frame 40 upper fixing frame (lifting member)
50 Structure A / B Hydrogen trailer

Claims (7)

A high-pressure gas container fixing structure for fixing a plurality of high-pressure gas containers having a cylindrical body,
A restraining member having a regular hexagonal outer shape in which the distance between two opposing sides is equal to or larger than the diameter of the body portion is fitted to each high-pressure gas container, and the restraining member is coupled to another restraining member or a fixing frame. A structure for fixing a high-pressure gas container.   Each of the high-pressure gas containers has a neck portion having a smaller diameter than the body portion at an end portion of a cylindrical body portion, and the restraining member is fitted to the neck portion. The fixing structure of the high-pressure gas container according to claim 1.   2. A coupling component or a coupling hole that enables coupling with the other constraint member or the fixing frame is provided at each of the six peripheral edges forming the outer shape of the constraint member. Or the high pressure gas container fixing structure described in 2. Each of the above high-pressure gas containers has a neck portion having a diameter smaller than that of the barrel portion at the end of the cylindrical barrel portion,
A short cylindrical outer peripheral frame having a hexagonal cross section, a panel fixed to the inner side of the outer peripheral frame, a bracket attached to the panel and attached to the neck portion of each high-pressure gas container; The structure for fixing a high-pressure gas container according to claim 1, wherein the structure is fixed. In a state where the restraining member fitted to the high-pressure gas container is overlapped with any of the six peripheral edges of the six sides forming the outer shape with respect to the other restraining member fitted to another high-pressure gas container. It is couple | bonded and it couple | bonds with the state which overlap | superposed any side which is not couple | bonded with the other restraint member with respect to the one or several fixing frame. The fixing structure of the high-pressure gas container described in any one of the above.   The upper fixing frame in which each of the restraining members fitted to the high-pressure gas container is coupled to another restraining member and a fixing frame with the axis being horizontal, and is coupled to the upper portion of the uppermost restraining member. The high-pressure gas container fixing structure according to claim 5, which also serves as a lifting member.   A hydrogen trailer, wherein a plurality of high-pressure gas containers filled with hydrogen are mounted on a carriage by the fixing structure according to any one of claims 1 to 6.

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