JP6550825B2 - Portable mount for flexible hose and flexible hose system - Google Patents

Description

  This invention is for a flexible hose that regulates excessive bending of a flexible hose when connecting a lorry vehicle and a storage tank with a flexible hose that transfers low-temperature liquefied natural gas (hereinafter referred to as LNG). The present invention relates to a portable mount and a flexible hose system.

  A flexible hose is generally used to transfer LNG between a tank truck or a tanker ship (hereinafter referred to as a lorry) and a storage tank. This is used in many facilities because it can facilitate the connection even when the stopping position of the lorry or the like in the facility (lorry station) and the position of the storage tank are different.

  To connect the lorry etc. to the storage tank with a flexible hose, first connect one end of the flexible hose to the lorry etc. or the storage tank, and move the other end manually to connect it to the storage tank or lorry etc. . At this time, since the weight of the flexible hose is heavy, the flexible hose is mounted on a portable stand.

  FIG. 8 is a diagram showing a state in which the lorry 102 and the storage tank 103 are connected by the flexible hose 100 placed on the portable bases 101, 101,.

  The flexible hose 100 transports, for example, LNG, and is made of austenitic stainless steel so as not to be brittle even at cryogenic temperatures. As an example, the overall length is 6 m, the inner diameter is about 50 mm, and the outer diameter is about 60 mm.

  The portable gantry 101 includes a cart 104 provided with casters, a support column 105 provided at a substantially central portion of the cart 104, and a hose holder 106 provided at the upper end of the support column 105.

  The flexible hose 100 is held at several places in its length direction by the hose holders 106, 106,... Of the transportable mounts 101, 101,. The flexible hose 100 is held at a predetermined height from the ground in a state of hanging down somewhat between the portable mounts 101 and 101.

  When the lorry 102 and the storage tank 103 are connected by the flexible hose 100, one end of the flexible hose 100 is pulled, and the plurality of portable mounts 101, 101,. It is drawn around while being held by the portable mounts 101, 101.

  And since the portable mounts 101, 101,... Can move freely, the flexible hose 100 can be routed with a certain degree of freedom even if the positional relationship between the lorry 102 and the storage tank 103 varies.

  On the other hand, in a hose drum truck used for a shield construction method, there is known a technology that can move the drum back and forth smoothly even in an excavated road having various curvatures (see, for example, Patent Document 1). .

JP, 2014-020126, A

  By the way, when the flexible hose 100 having one end connected to the connection port of the lorry 102 is brought close to the connection port of the storage tank 103 with the other end of the flexible hose 100, the portable bases 101, 101,. However, depending on the positional relationship between the lorry 102 and the storage tank 103, bending in the horizontal direction occurs. In particular, when the distance between adjacent portable mounts 101 and 101 is wide, the bending is likely to occur, and the degree of bending (hereinafter referred to as curvature) may increase. Furthermore, if the space | interval between adjacent portable mounts 101 and 101 is wide, it will hang down with the dead weight of the flexible hose 100, and the bending to a perpendicular direction will also arise.

  As described above, since the flexible hose 100 is made of austenitic stainless steel, cracks may occur due to repeated bending stress, and in particular, it becomes more fragile at extremely low temperatures.

  According to the hose manufacturer, in the flexible hose 100, when the bending radius of 500 mm is calculated 3000 times, stress cracking occurs, and when the bending radius is 550 mm, it is about 4000 times, and when the bending radius is 450 mm, the stress cracking is about 2000 times. It announces that it occurs.

  Therefore, use of the flexible hose 100 in the state where curvature becomes large leads to shortening of the life of the flexible hose 100, and replacement of the expensive flexible hose 100 is forced.

  Therefore, an object of the present invention is to provide a portable gantry in which the curvature of the flexible hose does not increase when the connection port of the lorry or the like and the connection port of the storage tank are connected by the flexible hose.

In order to solve the above-mentioned problems, the invention according to claim 1 places a flexible hose for transporting liquid or gas, and makes portable hoses for flexible hose easy to move. A portable frame is connected by a coupler so as to be bendable, and a curvature restricting portion for restricting the curvature of the two portable frame connected is provided, and a curvature changing means is provided to change the allowable curvature of the flexible hose. , characterized in that.

  According to this invention, since at least two adjacent portable mounts are connected by a bendable coupler, the distance between the portable mount and the portable mount is constant. The bending condition (curvature) is difficult to increase.

  In other words, since two portable mounts are connected, even if each portable mount is moved by routing the flexible hose, it does not move independently of each other and moves while maintaining the positional relationship between them. There is little occurrence of a large bend (curvature) in the flexible hose placed on these.

  Further, as shown in the background art, the vertical bending caused by the separation of the two portable supports is prevented.

The invention according to claim 2 is characterized in that, in the portable gantry according to claim 1, the curvature changing means is provided by changing the length of the connecting plate .

The invention according to claim 3 is characterized in that, in the portable gantry according to claim 1, the curvature changing means is provided by adjusting the amount of protrusion of the restricting portion .

The invention according to claim 4 is a flexible hose system for facilitating the movement of a flexible hose for transporting liquid or gas, comprising a portable cradle for flexible hose on which the flexible hose is placed, and at least two adjacent ones A bendable connection is made between the transportable cradles for flexible hoses by means of a connector, and a curvature restricting portion is provided to regulate the curvature of the two portable cradles connected, and the curvature change to change the allowable curvature of the flexible hoses Means is provided .

According to the invention of claim 1, since at least two portable stands adjacent to each other are connected by a bendable connector, the space between the portable stands and the portable stands is fixed, and therefore, they are placed on these. The flexible hose can also be prevented from increasing in the degree of curvature (curvature), and the long life of the flexible hose that is vulnerable to repeated bending stress can be achieved.
Further, since the curving restriction portion for restricting the curvature of the two portable mounts connected is provided, the curvature does not become excessively large and the flexible hose is not subjected to an excessive force, and the deterioration is not accelerated. Therefore, it can be used within the range allowed by the manufacturer.
Furthermore, since the coupling plate and the two ends of the connection plate are respectively pivotally supported by the two portable mounts to provide two supporting points, the number of portable mounts can be reduced. That is, although it is most preferable to arrange a large number of connected portable stands along the entire length of the flexible hose in order to regulate the curvature, the connection plate is provided between the portable stands and the portable stands. The number of portable mounts can be reduced accordingly.
Furthermore, since the curvature changing means for changing the allowable curvature of the flexible hose is provided, the flexible hose can be adapted to various allowable curvatures.

According to the invention of claim 2, by changing the length of the connecting plate, the curvature changing means is provided, so that the curvature can be easily changed. That is, when the length of the connecting plate is increased, the distance between the connecting portion and the facing restricting portion is increased, and the present invention can be applied to a flexible hose having a small allowable curvature (which may have a large degree of bending). If the length is shortened, the distance between the opposing regulation portions is narrowed, and the invention can be applied to a flexible hose having a large allowable curvature (must be curved). Thereby, changing the length of the connecting plate functions as a curvature changing means of the curvature which allows the flexible hose.

According to the invention of claim 3, since the curvature changing means is provided by adjusting the protrusion amount of the restricting portion, the distance between the two restricting portions and the restricting portion facing each other of the two portable mounts is set. And can be adapted to various flexible hoses of different permitted curvatures. Thereby, it functions as a curvature change means which changes the curvature which a flexible hose accept | permits by adjusting the protrusion amount of these control parts.

According to the invention of claim 4, there is provided a flexible hose system for facilitating the movement of a flexible hose for transporting liquid or gas, comprising a portable cradle for flexible hose on which the flexible hose is placed Since the portable cradles for the two flexible hoses are connected flexibly by a connector, the distance between the portable cradles and the portable cradles is constant, so the flexible hoses placed on them are also curved (curvature) Can be prevented, and the service life of the flexible hose which is vulnerable to repeated bending stress can be prolonged.
Further, since the curving restriction portion for restricting the curvature of the two portable mounts connected is provided, the curvature does not become excessively large and the flexible hose is not subjected to an excessive force, and the deterioration is not accelerated. Therefore, it can be used within the range allowed by the manufacturer.
Furthermore, since the coupling plate and the two ends of the connection plate are respectively pivotally supported by the two portable mounts to provide two supporting points, the number of portable mounts can be reduced. That is, although it is most preferable to arrange a large number of connected portable stands along the entire length of the flexible hose in order to regulate the curvature, the connection plate is provided between the portable stands and the portable stands. Accordingly, the number of portable mounts can be reduced.
Furthermore, since the curvature changing means for changing the allowable curvature of the flexible hose is provided, the flexible hose can be adapted to various allowable curvatures.

FIG. 2 is a view showing a portable gantry for a flexible hose according to a first embodiment of the present invention, together with FIG. 2, this figure is a plan view, and (A) shows a state where the flexible hose is not bent; B) shows a state in which the bending state of the flexible hose is regulated. It is a perspective view of a portable mount. FIG. 4 shows a portable mount for a flexible hose according to a second embodiment of the present invention together with FIG. 4, and this figure is a plan view showing an enlarged part of the portable mount. It is a perspective view which expands and shows a part of portable stand. FIG. 7 is a view showing a portable cradle for a flexible hose according to a third embodiment of the present invention together with FIG. 6, wherein the figure is a plan view, (A) shows a state where the flexible hose is not bent; ) Indicates a state in which the bending state of the flexible hose is regulated. It is a perspective view of a portable mount. It is a top view which shows the portable mount for flexible hoses which concerns on 4th Embodiment of this invention, (A) shows the state where the flexible hose is not bent, (B) regulates the bending condition of a flexible hose. Show the condition. The background art will be described with reference to FIGS. 9 and 10, showing a state in which a lorry and a storage tank are connected by a flexible hose, and this figure is a perspective view showing the whole. It is a top view which shows the whole. This figure is a plan view of the flexible hose placed by two portable mounts, (A) shows a state in which the flexible hose is not bent, and (B) shows that the bending condition of the flexible hose is regulated. Indicates the status.

  In describing each embodiment described below, the positional relationship between the lorry and the storage tank and the movement (routing) of the flexible hose placed on the portable mount are substantially the same as those described in the background art. Therefore, the explanation is omitted here, and mainly the portable mount will be explained.

  FIGS. 1 and 2 show a flexible hose system and a portable rack 2 for the flexible hose according to a first embodiment of the present invention. FIG. 1 shows a state in which two portable mounts 2 and 2 are connected, (A) is a plan view showing a state in which the flexible hose 1 is not bent, and (B) shows a curvature in which the flexible hose 1 is bent. It is a top view which shows the state currently controlled. FIG. 2 is a perspective view of the portable gantry 2.

  A portable mount 2 for a flexible hose according to the first embodiment includes a cart 3 provided with casters, a column 4 provided at a substantially central portion of the cart 3, and a hose holding plate provided at an upper end of the column 4. 5 and a band 6 for holding the flexible hose 1 on the hose holding plate 5 are provided.

  The column 4 is composed of a lower column 4a and an upper column 4b, and the upper column 4b can be moved up and down relative to the lower column 4a. Thereby, the height of the flexible hose 1 hold | maintained at the upper part of the support | pillar 4 can be adjusted.

  The elevating operation of the column 4 is not limited to the combined structure of the lower column 4a and the upper column 4b, but may be, for example, a pantograph-like structure.

  Moreover, although the flexible hose 1 was reliably hold | maintained with the hose holding plate 5 and the band 6, this invention is not restricted to this, The groove | channel which the flexible hose 1 fits is formed in a hose holding plate, and it fits into this You may make it position. It is sufficient that the flexible hose 1 does not fall from the hose holding plate 5 of the portable rack 2 when the flexible hose 1 is pulled around.

  Bending restriction plates 7 and 7 are integrally formed on the front part and the rear part of the carriage 3, respectively, and tongue-like restriction parts protruding diagonally forward or obliquely rearward at the corners of the bending restriction plates 7 and 7. 7a, 7a,... Are integrally formed.

  Then, two adjacent portable mounts 2 and 2 are connected via a connecting plate 8.

  The connecting plate 8 is slightly longer in the front-rear direction, and both end portions thereof are pivotally supported by the bending restricting plates 7 via the connecting pins 9 respectively.

  Thereby, the two portable mounts 2 and 2 are rotatably connected with two connection pins 9 and 9 as two supporting points, and a connecting plate 8 and two connection pins 9 and 9 constitute a coupler.

  In the two portable mounts 2 and 2 connected by this connector, the restriction portions 7a and 7a of the bending restriction plates 7 and 7 facing each other in a state where both are not bent are separated by a predetermined distance. (Fig. 1 (A)).

  And, when the flexible hose 1 placed on the two portable platforms 2, 2 connected by such a coupler 8, 9, 9 is drawn around in the connection work of the lorry and the storage tank, The portable mounts 2 and 2 move accordingly. Depending on the direction of routing, the movement direction of the respective portable bases 2 and 2 changes, and when the flexible hose 1 bends, the restricting portions 7a and 7a opposed to the two portable bases 2 and 2 positioned in the front and rear are arranged. It will contact (FIG. 1 (B)).

  As described above, since the distance between the two portable mounts 2 and 2 is fixed by the couplers 8, 9 and 9, the curvature of the mounted flexible hose 1 does not increase. Moreover, when the restricting portions 7a and 7a of the bending restricting plates 7 and 7 contact with each other, the curvature does not increase more than that, and the curvature of the flexible hose 1 such as, for example, the allowable curvature is reliably prevented. be able to. That is, the two restricting portions 7 a and 7 a facing each other function as a bending restricting portion that restricts the curvature of the flexible hose 1.

  The allowable curvature can be changed by changing the length of the connecting plate 8. That is, when the length of the connecting plate 8 is increased, the distance between the facing restricting portions 7a and 7a is increased, and the allowable curvature can be applied to the flexible hose 1 having a small curvature (a large degree of bending may be possible). Also, if the length of the connecting plate 8 is shortened, the distance between the facing restricting portions 7a and 7a becomes narrow, and the allowable curvature can be applied to the flexible hose 1 having a large curvature (the degree of bending must be small). . Thereby, changing the length of the connecting plate 8 functions as a curvature changing means of the curvature that the flexible hose 1 is allowed.

  Since the couplers 8, 9, and 9 are provided with two fulcrums (coupling pins 9, 9), the number of portable mounts 2, 2,... On which the flexible hose 1 is placed can be reduced.

  That is, as in the fourth embodiment to be described later, when two portable platforms are connected at one supporting point, the interval between the two portable platforms is narrow because the connecting plate 8 is not provided, and flexible hoses of the same length When mounting 1, more portable mounts are required, but when connecting the portable mounts 2 and 2 as in the first embodiment, the connecting plate 8 and the two fulcrums By forming (connecting pins 9, 9), the number of portable mounts 2, 2,... Can be reduced.

  FIGS. 3 and 4 show a portable cradle 12 for a flexible hose according to a second embodiment of the present invention. 3 and 4 show a part of the portable gantry 12 in an enlarged manner, FIG. 3 shows a plan view thereof, and FIG. 4 shows a perspective view thereof.

  The restriction members 20 and 20 are provided movably at the corner of the bending restriction plate 17 integrally formed on the front and the back (only one is shown in FIGS. 3 and 4) of the carriage 13 of the portable frame 12 .

  The restricting members 20 are in the shape of a rod having a rectangular cross section, and long holes 21 which are long in the longitudinal direction are formed to penetrate in the vertical direction.

  Such restricting members 20 are arranged at the corners of the bending restricting plate 17 so that the tips thereof project obliquely forward or backward from the corners.

  The mounting screws 22 are inserted into the long holes 21 of the regulating members 20, and the mounting screws 22 are screwed into screw holes (not shown) formed in the bending regulating plate 17. By doing so, it is attached to the corner of the bending restricting plate 17. The restriction members 20 can be moved in the longitudinal direction by loosening the attachment screws 22, and the amount of protrusion of the bending restriction plate 17 from the corner is adjusted.

  According to the transportable stand 12 for a flexible hose according to the second embodiment, since the amount of protrusion of the restriction members 20, 20 from the bending restriction plate 17 can be adjusted, the two portable stands 12, The distance between the two opposing two regulating members 20 and 20 can be adjusted, and can be adapted to various flexible hoses with different permitted curvatures.

  Therefore, while the two control members 20 and 20 which mutually oppose function as a curvature control part which controls the curvature of flexible hose 1, the curvature which changes the curvature which flexible hose permits by adjusting the amount of these projections It functions as a change means.

  5 and 6 show a portable rack 32 for a flexible hose according to a third embodiment of the present invention. FIG. 5 shows a state in which two portable mounts 32 and 32 are connected, (A) is a plan view showing a state in which the flexible hose 31 is not bent, and (B) shows a curvature in which the flexible hose 31 is bent. It is a top view which shows the state currently controlled. FIG. 6 shows a perspective view of the portable mount 32.

  The difference between the flexible hose portable frame 32 according to the third embodiment and the flexible hose portable frame 2 according to the first embodiment is the shape of the regulating member for regulating the curvature.

  The portable frame 32 for a flexible hose according to the third embodiment includes a column 34 provided substantially at the center of the carriage 33, a hose holding plate 35 provided at the upper end of the column 34, and the hose holding plate 35. A band 36 for holding the flexible hose 31 is provided.

  The column 34 is composed of a lower column 34a and an upper column 34b, and the upper column 34b can be moved up and down relative to the lower column 34a.

  Curved regulating plates 37 are integrally formed on the front and the rear of the carriage 33, respectively, and the front end edge and the rear end edge of the curved plates 37 sandwich the connecting plate 38. The restriction pins 40 and 40 are erected.

  The distance between the two restricting pins 40 is slightly larger than the width of the connecting plate 38, and the restricting pins 40 are in contact with the connecting plate 38 when the two portable platforms 32 are in a straight positional relationship. There is no state (FIG. 5A).

  Then, when the flexible hose 31 placed on the two portable mounts 32, 32 is drawn around in the connection work between the lorry and the storage tank, the portable mounts 32, 32 move accordingly. Depending on the direction of the routing, the moving directions of the portable mounts 32, 32 change, and when the flexible hose 31 is bent, the restriction pin 40 contacts the connecting plate 38 (FIG. 5 (B)).

  When the regulation pin 40 comes into contact with the connecting plate 38, the curvature does not increase any more, and it is possible to reliably prevent the curvature of the flexible hose 31 from exceeding the allowable curvature, for example. That is, the connection plate 38 and the restriction pin 40 function as a bending restriction part that restricts the curvature of the flexible hose 31.

  FIG. 7 shows a portable rack 52 for a flexible hose according to a fourth embodiment of the present invention, showing a state in which two portable racks 52, 52 are connected, wherein (A) is a flexible hose 51. The top view which shows the state which is not bent, (B) is a top view which shows the state which the flexible hose 51 bends and the curvature is controlled.

  The difference between the portable frame 52 for flexible hose according to the fourth embodiment and the portable frame 2 for flexible hose 1 according to the first embodiment is that the fulcrum of the connector is one. And the shape of the regulating member that regulates the curvature is different.

  Tongue-shaped connecting pieces 58, 58 are provided on the front end edge and the rear end edge of the carriage 53 of the portable frame 52, and a through hole is formed at the tip end of the connecting pieces 58, 58. .

  Further, the front and rear connection pieces 58 are different in position in the vertical direction, and the lower surface of one of the connection pieces 58 is substantially at the same height as the upper surface of the other connection piece 58.

  Then, in a state where the two adjacent connecting pieces 58 and 58 of the two adjacent portable mounts 52 and 52 are positioned so as to overlap each other, the connecting pin 59 is inserted into a through-hole formed in both and the two portable mounts 52, 52 are linked.

  Restricting pieces 60, 60,... Projecting rearward or forward are integrally formed at the front end edge and rear end edge of the carriage 53 and at the end portions in the width direction.

  The amount of protrusion of these restricting pieces 60, 60,... From the front end edge or rear end edge of the carriage 53 is the same as that of the restricting pieces 60 facing each other when the two connected portable mounts 52, 52 are in a straight positional relationship. 60 is formed so as to be slightly separated (FIG. 7 (A)).

  Then, when the flexible hose 51 placed on the two portable racks 52, 52 is drawn around in the connection work between the lorry and the storage tank, the portable racks 52, 52 move along with it. Depending on the direction of the routing, the moving directions of the portable mounts 52, 52 change, and when the flexible hose 51 is bent, the opposing restricting pieces 60 and 60 come into contact (FIG. 7B).

  When the regulation pieces 60 and 60 come into contact with each other, the curvature does not increase any more, and the curvature of the flexible hose 51, for example, an allowable curvature or more can be reliably prevented. That is, the two restricting pieces 60 and 60 facing each other function as a bending restricting portion that restricts the curvature of the flexible hose 51.

  According to the flexible hose portable rack 52 according to the fourth embodiment, since the two portable racks 52 and 52 are connected to each other, the portable rack 52 is placed on the two portable racks 52, 52. It is difficult for the flexible hose 51 to bend with a large curvature, and it is possible to reliably prevent the curvature from exceeding a predetermined value (a state where the regulating pieces 60 and 60 are in contact).

  As mentioned above, although embodiment of this invention was described, a specific structure is not restricted to said each embodiment, Even if there are a design change of the range which does not deviate from the summary of this invention, Included in the present invention. For example, in each of the above-described embodiments, it is assumed that the bending state (curvature) is regulated, the contact between the regulating portions 7a and 7a (first embodiment), and the contact between the regulating members 20 and 20 (second In the embodiment, the contact between the connection plate 38 and the restriction pin 40 (third embodiment) and the contact between the restriction piece 60 and the restriction piece 60 (fourth embodiment) Not limited to this, a restricting portion for restricting the rotation may be provided at a fulcrum in the coupler.

  In each of the above embodiments, the description has been made of two portable mounts connected by a coupler, but the present invention is not limited to this, and a plurality of portable mounts such as three or four can be connected. It is good. The more the number is, the more the curvature (curvature) of the flexible hose can be prevented from increasing more reliably. However, the stopping position of the lorry or the like at the facility (lorry station) and the position of the storage tank Due to the above, there is a place where the curvature tends to be large when the flexible hose is routed, and it is possible to connect mainly two or more portable mounts at such a place.

DESCRIPTION OF SYMBOLS 1 flexible hose 2 portable type support 4 post 4a lower pillar 4b upper post 5 hose holding plate 7 bending control plate 7a restricting portion 8 connecting plate 9 connecting pin 12 portable support frame 17 bending control plate 18 connecting plate 19 connecting pin 20 restricting member 21 Long hole 22 installation screw 31 flexible hose 32 portable stand 34 post 34a lower pillar 34b upper post 35 hose holding plate 37 bending control plate 38 connecting plate 39 connecting pin 40 restricting pin 51 flexible hose 52 portable stand 52 carriage 58 connecting piece 59 Connecting pin 60 Limiting piece 100 Flexible hose 101 Portable stand 102 Lorry 103 Storage tank 104 Carriage 105 Support 106 Hose holder

Claims (4)

In a transportable cradle for flexible hoses on which a flexible hose carrying liquid or gas is placed and which facilitates the movement of the flexible hose,
At least two portable stand adjacent bends linked in coupling,
Along with providing a curving control unit to control the curvature of the two portable mounts connected,
Curvature changing means is provided for changing the allowable curvature of the flexible hose,
A portable cradle for flexible hoses characterized by By changing the length of the connecting plate, the curvature changing means,
The portable pedestal for a flexible hose according to claim 1. By making the amount of protrusion of the restricting portion adjustable, the curvature changing means was used.
The portable pedestal for a flexible hose according to claim 1. A flexible hose system for facilitating the movement of a flexible hose for transporting liquid or gas, comprising:
The portable hose for flexible hose on which the flexible hose is mounted is provided, and the portable carriage for at least two adjacent flexible hoses is flexibly connected by a connector.
While providing a bending restricting portion that restricts the curvature of the two connected portable mounts,
Provided curvature changing means for changing the allowable curvature of the flexible hose,
A flexible hose system characterized by that.

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