JP2014073854A - Tank semi-trailer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tank semi-trailer which suppresses deformation of a tank due to internal pressure acting in the tank, thereby preventing a breakwater plate from falling.SOLUTION: By welding an outer end of a toric reinforcement member 20 in a radial direction, the reinforcement member 20 having an L-shaped section, to the whole circumference of an inner circumferential surface of a tank 100, rigidity of the tank 100 against deformation thereof in a radial direction can be increased in a circumferential direction of the tank 100. Consequently, even if a filling material is filled in the tank 100 in a high pressure state, deformations of the tank 100 and the reinforcement member 20 in radial directions can be suppressed thereby preventing a bolt 30 from breakage. As a result, falling of the breakwater plate 10 from the reinforcement member 20 due to breakage of the bolt 30 can be prevented.

Description

  The present invention relates to a tank semi-trailer, and more particularly to a tank semi-trailer that prevents the breaker plate from falling off by suppressing deformation of the tank due to internal pressure acting in the tank.

  In a tank semi-trailer equipped with a tank filled with a liquid filling material, a wave preventing plate is arranged inside the tank for suppressing the liquid level fluctuation of the filling material (Patent Document 1).

  Here, an internal structure of a tank 500 used in a conventional tank semi-trailer will be described with reference to FIG. 5A is a side sectional view of a conventional tank semi-trailer tank 500, and FIG. 5B is an enlarged sectional view of the tank 500 taken along the line Vb-Vb in FIG. 5A. In FIG. 5A, a part of the tank 500 is viewed in cross section. In addition, arrows UD, LR, and FB in FIGS. 5A and 5B indicate the vertical direction, the horizontal direction, and the front-rear direction of the tank 500, respectively.

  As shown in FIGS. 5 (a) and 5 (b), a plurality of wave-proof plates 510 formed in a plate shape are formed inside the tank 500 while being spaced apart from each other by a predetermined interval (see FIG. 5). 5 (a) in the left-right direction), and a pair of fixing members 520 formed in an arc shape are provided at positions corresponding to the plurality of wave blocking plates 510.

  The pair of fixing members 520 are members for fixing the wave preventing plate 510 to the inside of the tank 500, and the radially outer ends of the pair of fixing members 520 are the left side and the right side of the tank 500 (FIG. 5B). The inner peripheral surfaces located on the left side and the right side are welded to each other, and a wave preventing plate 510 is fixed to the pair of fixing members 520 by bolts 530.

JP 10-151985 (paragraph [0022])

  In the conventional tank 500 described above, the fixing member 520 formed in an arc shape is welded to the inner peripheral surface located in the left-right direction (FIG. 5B, left-right direction) of the tank 500, and the vertical direction of the tank 500 ( It is not welded to the inner peripheral surface located in FIG. For this reason, the portion of the tank 500 positioned in the vertical direction has lower rigidity against deformation in the radial direction of the tank 500 than the portion positioned in the horizontal direction. Therefore, when the filling is filled in the tank 500 in a high pressure state, a portion positioned in the vertical direction of the tank 500 is deformed linearly by the internal pressure in the tank 500, and a cross section perpendicular to the axial direction of the tank 500. Since the shape is a substantially elliptical shape extending in the left-right direction of the tank 500, a large shearing force acts on the bolt 530 that fixes the wave preventing plate 510 to the reinforcing member 520. As a result, there is a problem in that the bolt 530 is easily damaged, and the wave preventing plate 510 is easily detached from the fixing member 520 accordingly.

  The present invention has been made to solve the above-described problems, and provides a tank semi-trailer that prevents the breaker plate from falling off by suppressing deformation of the tank due to internal pressure acting in the tank. It is aimed.

Means for Solving the Problems and Effects of the Invention

  According to the tank semi-trailer according to claim 1, the reinforcing member is formed in an annular shape set to an outer diameter corresponding to the inner diameter of the tank, and the radially outer end of the reinforcing member is the entire inner peripheral surface of the tank. Since it is welded over the circumference, the rigidity against deformation in the radial direction of the tank can be increased uniformly in the circumferential direction of the tank.

  In addition, since the reinforcing member has a substantially L-shaped cross section, the rigidity against deformation of the reinforcing member (for example, the radial direction or the twist direction of the reinforcing member) can be increased.

  Therefore, even when the inside of the tank is filled with a high-pressure state, deformation of the tank and the reinforcing member in the radial direction can be suppressed, so that the cross-sectional shape perpendicular to the axial direction of the tank is deformed. As a result, it is possible to prevent the breaker plate from falling off due to deformation of the tank.

  According to the tank semi-trailer according to claim 2, in addition to the effect produced by the tank semi-trailer according to claim 1, the wave preventing plate is fixed to the large-diameter trunk reinforcing member provided at the position closest to the first conical trunk. There is an effect that a wide working space can be secured.

  That is, for example, after the first small diameter body, the second small diameter body, the large diameter body, the first conical body, and the second conical body are integrally formed with the reinforcing member welded to the inner peripheral surface. The wave-proof plate is carried into the tank from the axial direction end side of the second small-diameter body portion that opens, and the wave-proof plate is fixed to the reinforcing member, and the axial-direction end portion of the second small-diameter body portion that opens. In the case of manufacturing a tank by closing the side, the large-diameter body wave breaker plate has a length dimension in the direction connecting the one end side and the other end side fixed to the large-diameter body reinforcement member. Since the size is set to be larger than the inner diameter of the trunk reinforcement member, the large-diameter trunk wave-breaking plate is brought into the large-diameter trunk section in a tilted state, and the large-diameter trunk wave-breaking plate is fixed. Rotate the large-diameter body wave breaker in the vicinity of the large-diameter body reinforcement member so that the direction connecting the one end side and the other end side of the large-diameter body wave breaker faces the radial direction of the large-diameter trunk part Let After securing the large 径胴 portion reinforcing member to be secured to the large-径胴 part explosion wave plate.

  Here, among the spaces formed on both sides in the axial direction of the large-diameter trunk reinforcing member provided at the position closest to the first conical trunk, the large-diameter trunk wave-breaking plate is inserted from the second small-diameter trunk side. The space formed on the back side of the large-diameter trunk reinforcing member (the first conical trunk side with respect to the large-diameter trunk reinforcing member) when carried in is the inner circumferential surface of the large-diameter trunk and the first conical cylinder. The space formed on the front side of the large-diameter trunk reinforcing member (on the opposite side of the first conical trunk portion with respect to the large-diameter trunk reinforcing member) It is formed only by the inner peripheral surface of the diameter barrel portion. That is, in the space formed on the opposite side of the first cone body, the large-diameter body wave-breaking plate interferes with the first cone body in advance compared to the space formed on the first cone body side. As much as possible, the large-diameter body wave breaker can be easily turned.

  In this regard, the large-diameter barrel reinforcing member provided at a position closest to the first conical barrel portion has a surface facing the other axial direction of the large-diameter barrel reinforcing member on the opposite side of the first conical barrel portion. The large-diameter body wave-breaking plate carried in from the second small-diameter body part side is turned in the space formed on the opposite side of the first conical body part, and then the large-diameter body wave-breaking part The plate can be fixed to the large-diameter trunk reinforcing member to be fixed.

  At this time, the large-diameter body wave breaker fixed to the large-diameter body reinforcing member provided at the position closest to the first conical body part is provided at the position closest to the first conical body part. Since it is only necessary to carry in to the front side of the large-diameter trunk reinforcing member, the distance to carry the wave-proof plate in the large-diameter trunk as compared with the case of bringing the wave-proof board into the deep side of the large-diameter trunk reinforcing member. Therefore, the working efficiency of welding the large-diameter body wave-breaking plate to the large-diameter body reinforcing member can be improved.

  Similarly, the large-diameter trunk portion reinforcing member provided at the position closest to the second conical trunk portion is the second small-diameter trunk portion side of the space formed on both axial sides of the large-diameter trunk portion reinforcing member. The space formed on the back side of the large-diameter trunk reinforcing member when it is carried in from the side (the opposite side of the second conical trunk portion with respect to the large-diameter trunk reinforcing member) is only by the inner peripheral surface of the large-diameter trunk portion. The space formed on the front side of the large-diameter trunk reinforcing member (the second conical trunk side with respect to the large-diameter trunk reinforcing member) is formed on the inner peripheral surface of the large-diameter trunk. It is formed with the internal peripheral surface of the 1st cone body part. That is, in the space formed on the opposite side of the second cone body portion with respect to the large diameter body reinforcement member, the large diameter body wave breaker plate is second in comparison with the space formed on the second cone body side. Since the interference with the conical barrel portion can be avoided in advance, the large-diameter barrel portion wave breaker can be easily turned.

  In this regard, the large-diameter barrel reinforcement member provided at the position closest to the second cone barrel portion has a surface facing the other axial direction of the large-diameter barrel reinforcement member opposite to the second cone barrel portion. The large-diameter body wave-breaking plate carried from the second small-diameter body part side is turned in the space formed on the opposite side of the second conical body part, and then the large-diameter body wave-breaking part The plate can be fixed to the large-diameter trunk reinforcing member.

  As described above, when the large-diameter body reinforcing plate is fixed to the large-diameter body reinforcing member provided at the position closest to the first conical body section or the second conical body section, Since the large-diameter trunk wave breaker can be fixed to the large-diameter trunk reinforcing member after the large-diameter trunk wave-breaking plate is turned in the space formed by the peripheral surface alone, The working efficiency of fixing the corrugated plate to the large-diameter trunk reinforcing member can be improved.

  The first small diameter body, the second small diameter body, the large diameter body, the first conical body, and the second conical body, which are integrally welded with the reinforcing member, are opened and then opened. Even when the wave preventing plate is carried into the tank from the axial end side of the body portion, the same effect as described above can be obtained.

  According to the tank semi-trailer according to claim 3, in addition to the effect produced by the tank semi-trailer according to claim 2, the one end side and the other end side of the first conical trunk part wave breaker plate and the second conical trunk part wave breaker plate are provided. The length dimension in the connecting direction is larger than the inner diameters of the first cone body reinforcing member and the second cone body reinforcing member to which the first cone body wave preventing plate and the second cone body wave preventing plate are to be fixed. The first conical body reinforcing member is fixed to the first conical body reinforcing member because the first conical body reinforcing member facing the other side in the axial direction is directed toward the large diameter body. There is an effect that it is possible to secure a wide working space when performing the operation. Similarly, since the surface facing the other axial direction of the second cone body reinforcing member is directed to the large-diameter body portion, the second cone body wave-breaking plate is fixed to the second cone body reinforcing member. There is an effect that it is possible to secure a wide working space when performing the operation.

  According to the tank semi-trailer according to claim 4, in addition to the effect produced by the tank semi-trailer according to claim 2 or 3, a manhole member that communicates the inside and outside of the tank is attached below the large-diameter body of the tank. Therefore, the manhole member, which is a heavy object, can be disposed at a lower position in the height direction of the tank. Therefore, the center of gravity of the tank can be lowered, and as a result, the running stability of the tank semi-trailer can be ensured.

  According to the tank semi-trailer according to claim 5, in addition to the effect produced by the tank semi-trailer according to claim 4, the two reinforcing members provided at positions sandwiching the manhole member are surfaces facing the other side in the respective axial directions. Is directed to the manhole member, so that the inner side of the large-diameter trunk portion is directed toward the manhole member as compared with the case where one side in the axial direction in which the radial inner side of the large-diameter trunk portion reinforcement member is bent is directed to the manhole member. It is possible to avoid that the welding operation of the radially outer end portion of the large-diameter trunk portion reinforcing member is hindered by the radially inner portion bent toward one axial direction of the large-diameter trunk portion reinforcing member. Therefore, there is an effect that it is possible to improve the working efficiency when welding the radially outer end of the large-diameter trunk reinforcing member to the inner peripheral surface of the large-diameter trunk.

(A) is a top view of the tank of the tank semitrailer in one embodiment of this invention, (b) is sectional drawing of the tank in the Ib-Ib line | wire of Fig.1 (a). It is sectional drawing of the tank in the II-II line of Fig.1 (a). It is a partial expanded sectional view of a tank. It is a partial expanded sectional view of a tank. (A) is a side sectional view of the tank of a conventional tank semitrailer, and (b) is an enlarged sectional view of the tank semitrailer along the line Vb-Vb in FIG. 5 (a).

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, with reference to FIG. 1A, an external configuration of a tank 100 used in a tank semi-trailer according to an embodiment will be described. FIG. 1A is a top view of a tank 100 of a tank semi-trailer according to an embodiment of the present invention. In addition, the arrows UD, LR, and FB in FIG. 1A indicate the vertical direction, the left-right direction, and the front-rear direction of the tank 100, respectively, and the same applies to FIG. .

  As shown in FIG. 1 (a), the tank semi-trailer is configured by attaching a traveling device (not shown) to a tank 100 in which a liquid filling exemplified by LPG is filled in a high-pressure state.

  The tank 100 includes a cylindrical first small-diameter body 1 located on the front end side (left side in FIG. 1A) of the tank 100 and a cylinder located on the rear end side (right side in FIG. 1A) of the tank 100. -Shaped second small-diameter barrel 2, a cylindrical large-diameter barrel 3 positioned between the first small-diameter barrel 1 and the second small-diameter barrel 2, and the first small-diameter barrel 1 and the large-diameter barrel A conical first conical body 4 that concentrically connects 3, a second small-diameter body 2 and a conical second conical body 5 that concentrically connect the large-diameter body 3, and a first small-diameter The side of the body 1 opposite to the side to which the first cone body 4 is connected (left side in FIG. 1A) and the side of the second small-diameter body 2 opposite to the side to which the second cone body 4 is connected (see FIG. 1 (a) right side) and a hemispherical end plate 6.

  The first small diameter body 1 and the second small diameter body 2 are set to have the same diameter, and the diameter thereof is set to be smaller than the diameter of the large diameter body 3. Moreover, the 1st cone body part 4 and the 2nd cone body part 2 can be made into the same shape by setting the 1st small diameter trunk | drum 1 and the 2nd small diameter trunk | drum 2 to the same diameter.

  Next, the internal configuration of the tank 100 will be described with reference to FIGS. FIG. 1B is a cross-sectional view of the tank 100 taken along the line Ib-Ib in FIG. 1A, and a part of the tank 100 is viewed in cross section. FIG. 2 is an enlarged cross-sectional view of the tank 100 taken along the line II-II in FIG. FIG. 3 is a partial enlarged cross-sectional view of the tank 100. In FIG. 1B to FIG. 3, the wave preventing plate 10 and the reinforcing member 20 are schematically illustrated in order to simplify the drawings and make the description easy to understand.

  As shown in FIGS. 1B to 3, the tank 100 is arranged inside the tank 100 along the axial direction (the left-right direction in FIG. 1B) with a predetermined interval. The plurality of wave blocking plates 10 provided and the plurality of reinforcing members 20 to which the plurality of wave blocking plates 10 are fixed and welded to the inner peripheral surface of the tank 100 are mainly provided.

  The wave preventing plate 10 is a member that suppresses the liquid level fluctuation of the filling material filled in the tank 100, and has a substantially U-shaped cross section. By forming the cross section of the wave preventing plate 10 in a substantially U-shape, it is possible to ensure the rigidity against the pressure received from the filler by the liquid level fluctuation of the filler.

  The reinforcing member 20 is a member that fixes the wave preventing plate 10 inside the tank 100. The reinforcing member 20 is formed in an annular shape set to an outer diameter corresponding to the inner diameter of the tank 100, and the cross-sectional shape along the axial direction of the reinforcing member 20 is on one side in the axial direction with respect to the radial inner side of the reinforcing member 20. It is formed in a substantially L-shaped cross section bent to (for example, the back side in the vertical direction in FIG. 2). By forming the cross-sectional shape of the reinforcing member 20 to be substantially L-shaped, it is possible to increase the rigidity against deformation of the reinforcing member 20 (for example, deformation of the reinforcing member 20 in the radial direction, the torsional direction, and the like).

  The reinforcing member 20 is welded at the radially outer end of the reinforcing member 20 over the entire inner peripheral surface of the tank 100. Thereby, the rigidity with respect to the deformation | transformation to the radial direction of the tank 100 can be improved.

  The wave preventing plate 10 is fixed to the reinforcing member 20 at one end side and the other end side in the longitudinal direction (left and right direction in FIG. 2) of the wave preventing plate 10. The length dimension connecting the one end side and the other end side in the longitudinal direction of the wave preventing plate 10 (the length of the portion having the largest length dimension among the length dimensions connecting the one end side and the other end side of the wave preventing plate 10 Is set to a size larger than the inner diameter of the reinforcing member 20 to be fixed, and one end side and the other end side of the wave preventing plate 10 are formed in an arc shape corresponding to the inner peripheral surface of the tank 100. Yes. The wave preventing plate 10 is fixed by a bolt 30 in a state in which the wave preventing plate 10 is in contact with a surface facing the other side in the axial direction of the reinforcing member 20 (for example, the front side in the vertical direction in FIG. 2).

  As described above, the radially outer end of the annular reinforcing member 20 formed in an L-shaped cross section is welded over the entire inner peripheral surface of the tank 100 to deform the tank 100 in the radial direction. Therefore, the rigidity against deformation in the radial direction of the tank 100 can be increased uniformly in the circumferential direction of the tank 100. Therefore, even when the tank 100 is filled with a filling material in a high-pressure state, the tank 100 and the reinforcing member 20 can be prevented from being deformed in the radial direction. It can suppress that (refer FIG. 2) deform | transforms. Thereby, since generation | occurrence | production of the shearing force resulting from a deformation | transformation of the tank 100 and the reinforcement member 20 can be suppressed with respect to the bolt 30 which fixes the wave-proof board 10 to the reinforcement member 20, damage to the bolt 30 can be avoided, As a result, it is possible to prevent the breaker plate 10 from being detached from the reinforcing member 20 due to the breakage of the bolt 30.

  Further, the reinforcing member 20 is formed with a notch 20a cut out from the outside in the radial direction toward the inside, and the reinforcing member 20 faces the notch 20a below the tank 100 (downward in FIG. 2). It is fixed to the inner peripheral surface of the tank 100. As a result, the hole formed by the notch 20a and the inner peripheral surface of the tank 100 communicates with the space on one side in the axial direction of the tank 100 with the reinforcing member 20 therebetween and the space on the other side. It can be a hole. Thereby, it is possible to avoid the filling material flowing along the inner peripheral surface located below the tank 100 inside the tank 100 from being dammed by the reinforcing member 20.

  A manhole member 40 that communicates the inside and the outside of the tank 100 is disposed below the large-diameter body portion 3 of the tank 100. The manhole member 40 is a part that forms a passage when an operator enters the inside of the tank 100 for inspection or the like, and an inner periphery of a hole formed in an inner peripheral surface located below the large-diameter trunk portion 3. An annular tube seat 40a attached to the surface, and a lid (not shown) that is attached to the tube seat 40a and closes an opening formed on the inner peripheral side of the tube seat 40a. The seat 40a is provided in a state of protruding radially inward (upper side in FIG. 3) from the inner peripheral surface of the large-diameter trunk 3.

  While the manhole member 40 is heavy (about 90 kg in the present embodiment), the manhole member 40 is attached to the lower part of the large-diameter trunk 3 so that the manhole member 40 is placed at the height of the entire tank 100. It can be placed at a lower position in the direction. Therefore, the center of gravity of the tank 100 can be lowered. As a result, the running stability of the tank semi-trailer can be ensured, and it is possible to easily prevent the tank semi-trailer from overturning due to the inclination in the left-right direction.

  Next, a method for manufacturing the tank 100 will be described with reference to FIG. FIG. 4 is an enlarged cross-sectional view of the tank 100, in which a process of carrying the wave-breaking plate 10 to be fixed to the reinforcing member 20 welded to the large-diameter trunk 3 into the large-diameter trunk 3 is illustrated. ing. FIG. 4 shows a cross section corresponding to the cross section taken along line Ib-Ib in FIG. 1A. In order to simplify the drawing and make the explanation easy to understand, the wave blocking plate 10 and the reinforcing member 20 are shown. This is schematically shown.

  Here, among the reinforcing members 20 welded to the inside of the tank 100, those to be welded to the first small diameter body 1 are welded to the first small diameter body reinforcing member 21 and the second small diameter body 2. What is welded to the second small-diameter body reinforcing member 22, what is welded to the large-diameter body part 3 is large-diameter body reinforcing member 23, and what is welded to the first conical body part 4 is first-cone body reinforcing member 24, what is welded to the second cone body 5 is defined as a second cone body reinforcement member 25.

  Further, among the wave preventing plates 10 disposed inside the tank 100, those fixed to the first small diameter body reinforcing member 21 are the first small diameter body wave preventing plate 11 and the second small diameter body reinforcing member 22. Those fixed to the second small-diameter body wave-breaking plate 12 (see FIG. 3), and those disposed on the large-diameter body-reinforcing member 23 are large-diameter body wave-breaking plates 13 and the first conical body-body reinforcement. What is fixed to the member 24 is defined as the first conical body portion wave breaker 14 and what is fixed to the second conical body portion reinforcing member 25 is defined as the second conical body portion wave breaker 15 (see FIG. 3). .

  As shown in FIG. 4, first, a plate material is formed into a cylindrical shape or a conical shape to form a plurality of cylindrical members (cylindrical member forming step).

  The cylindrical tubular member is a part that constitutes the first small-diameter body part 1, the second small-diameter body part 2, or the large-diameter body part 3, and the first small-diameter body part 1 and the second small-diameter body part 2 Alternatively, it is formed into a shape corresponding to the large-diameter trunk portion 3. Further, the conical cylindrical member is a part constituting the first conical barrel portion 4 or the second conical barrel portion 5 and has a shape corresponding to the first conical barrel portion 4 or the second conical barrel portion 5. It is molded into.

  Note that, for example, the first small-diameter body portion 1 may be configured by a single cylindrical member, or may be configured by connecting a plurality of cylindrical members to each other in a cylindrical member connecting step described later.

  Here, when the diameters of the first small diameter body 1 and the second small diameter body 2 are set to be the same, the cylindrical member constituting the first small diameter body 1 and the cylinder constituting the second small diameter body 2. A member can be made into the same shape. Similarly, when the first cone body portion 4 and the second cone body portion 5 are formed in the same shape, the conical member constituting the first cone body portion 4 and the conical member constituting the second cone body portion 5. And the same shape. In this case, since the number of types of cylindrical members and conical members to be molded in the cylindrical member molding step can be reduced, work efficiency in the cylindrical member molding step can be improved.

  Next, one axial direction end of one cylindrical member used as the site | part which comprises the 1st small diameter trunk | drum 1 or the 2nd small diameter trunk | drum 2 among the cylindrical cylindrical members shape | molded by the cylindrical member shaping | molding process. The end plate 6 is welded to the side (first end plate welding process). In the present embodiment, the end plate 6 is attached to one cylindrical member that is a part constituting the first small-diameter trunk.

  In the first end plate welding step, the end plate 6 and the cylindrical member are welded from both the outer peripheral surface side and the inner peripheral surface side of the cylindrical member. Therefore, by performing the first end plate welding step before the cylindrical member connecting step described later, a work space for performing welding work from the inner peripheral surface side of the cylindrical member can be secured, so the first end plate welding The work efficiency of the process can be improved.

  Next, the manhole member 40 is attached to one cylindrical member which is a part constituting the large-diameter body portion 3 among the cylindrical cylindrical members formed by the cylindrical member forming step (manhole member attachment). Process).

  Next, the outer peripheral side end of the reinforcing member 20 is welded to the cylindrical member formed by the cylindrical member forming step over the entire inner peripheral surface of the cylindrical member (reinforcing member welding step).

  In this reinforcing member welding step, in the cylindrical member to which the end plate 6 is welded among the cylindrical members that constitute the first small-diameter barrel portion 1, the other axial direction other side of the first small-diameter barrel portion reinforcing member 21 is used. The end portion on the radially outer side of the first small-diameter trunk portion reinforcing member 21 is welded to the inner peripheral surface of the cylindrical member with the surface facing toward the opposite side of the end plate 6.

  Further, when welding the first small-diameter trunk reinforcing member 21 or the second small-diameter trunk reinforcing member 22 to the cylindrical member constituting the first small-diameter trunk 1 or the second small-diameter trunk 2, When welding a plurality of first small-diameter body reinforcement members 21 or second small-diameter body reinforcement members 22 to the inner peripheral surface, all of the first small-diameter body reinforcement members 21 or the second small-diameter body reinforcement members 22 The end portion on the radially outer side of the first small-diameter body reinforcing member 21 or the second small-diameter body reinforcing member 22 is cylindrical with the surface facing the other side in the axial direction facing one of the axial directions of the cylindrical member. It welds to the inner peripheral surface of a member.

  In the reinforcing member welding step, when the large-diameter trunk portion reinforcing member 23 is welded to the cylindrical member constituting the large-diameter trunk portion 3, a manhole is formed in the axial direction (left and right direction in FIG. 4) of the large-diameter trunk portion 3. The large-diameter trunk portion reinforcing member 23 provided at a position sandwiching the member 40 is a large-diameter trunk portion reinforcing member in a state where the surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23 faces the manhole member 40. 23 is welded to the inner peripheral surface of a cylindrical member that is a part constituting the large-diameter body 3.

  The large-diameter trunk portion reinforcing member 23 is formed in an annular shape having a substantially L-shaped cross section in which the radially inner side faces the axial center side of the large-diameter trunk portion reinforcing member 23. The radially outer end of the large-diameter trunk reinforcing member 23 is the inner peripheral surface of the large-diameter trunk 3 with one axial center side facing the radially inner side of the partial reinforcing member 23 facing the manhole member 40. When welding, the radially inner end projecting toward the side where the manhole member 40 is located with respect to the radially outer end of the large-diameter trunk reinforcing member 23 to be welded and the large-diameter trunk reinforcing member 23 A welding operation must be performed while a welding tool used for welding is inserted between the tube seat 40a of the manhole member 40 protruding from the peripheral surface. As a result, the efficiency of the welding operation is reduced, or welding to the lower part of the inner peripheral surface of the large-diameter trunk part 3 of the large-diameter trunk part reinforcing member 23 (the part located in the vicinity of the tube seat 40a) becomes impossible. There is a fear.

  Therefore, welding the large-diameter trunk portion reinforcing member 23 in the reinforcing member welding process by directing the surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23 provided at a position sandwiching the manhole member 40 toward the manhole member 40. The work efficiency can be improved, and the quality of the tank 100 can be improved by reliably welding.

  In the reinforcing member welding step, when the first conical body reinforcing member 24 or the second conical body reinforcing member 25 is welded to the conical member constituting the first conical body part 4 or the second conical body part 5. The first conical body reinforcing member 24 and the second conical body reinforcing member 25 face the other side in the axial direction toward the side where the diameter of the conical cylindrical member is enlarged, The end of the cone body reinforcing member 24 or the second cone body reinforcing member 25 in the outer side in the radial direction is an inner part of a conical cylindrical member that becomes a part constituting the first cone body part 4 or the second cone body part 5. Weld to the peripheral surface.

  Next, a plurality of cylindrical members (cylindrical member and conical member) to which the reinforcing member 20 is welded by the reinforcing member welding step are concentrically connected, and the first small-diameter body portion 1, the second small-diameter body portion 2, and the large-diameter portion. A connecting tubular member is formed by integrally forming the body portion 3, the first conical body portion 4 and the second conical body portion 5 (tubular member connecting step).

  In this connecting tubular member, a large diameter body 3 is located between the first small diameter body 1 and the second small diameter body 2, and the first small diameter body 1 and the large diameter body 3 are in a first cone. The second small diameter body 2 and the large diameter body 3 are connected by a second conical body 5 while being connected by a body 4. That is, the connecting cylindrical member is formed in a shape in which the diameter at the central portion in the axial direction is larger than the diameters at both end portions in the axial direction, and the axial direction in which the second small diameter body portion 2 of the connecting cylindrical member is located. The rear end (the end on the right side in FIG. 4) is open.

  In this cylindrical member connecting step, welding is performed from both the outer peripheral surface side and the inner peripheral surface side of the cylindrical member in order to connect a plurality of cylindrical members. Therefore, if the wave preventing plate 10 is fixed to the reinforcing member 20 at a stage prior to the cylindrical member connecting step, the work space for performing the welding work from the inner peripheral surface side of the cylindrical member is the wave preventing plate. Limited by 10. Therefore, the work efficiency of the cylindrical member connecting step can be improved by performing the cylindrical member connecting step before fixing the wave preventing plate 10 to the reinforcing member 20.

  Further, in the cylindrical member coupling step, all the first small-diameter trunk reinforcing members 21 face the other axial direction, and all the second small-diameter trunk reinforcing members 22 face the other axial center. It is desirable to direct either of them toward the axial direction of the tank 100. In the present embodiment, the end plate 6 is welded to one cylindrical member that constitutes the first small-diameter body portion 1, and the other axial direction other side of the first small-diameter body reinforcing member 21 welded to the cylindrical member is attached. Since the facing surface is directed to the opposite side of the end plate 6, the surface facing the other axial direction of the first small-diameter trunk reinforcing member 21 is directed to the rear end side (right side in FIG. 4) of the connecting cylindrical member, As a result, the surfaces of all the first small-diameter body reinforcing members 21 facing the other axial direction and the surfaces of all the second small-diameter body reinforcing members 22 facing the other axial direction are the rear of the connecting cylindrical member. It is directed to the end side (right side in FIG. 4).

  The end plate 6 is welded to one cylindrical member constituting the second small-diameter body portion 2, and the surface facing the other axial direction of the second small-diameter body reinforcing member 22 welded to the cylindrical member is the end plate 6, the surface facing the other axial direction of all the first small-diameter barrel reinforcement members 21 and the other axial-direction other side of all the second small-diameter barrel reinforcement members 22. Is directed to the front end side (left side in FIG. 4) of the connecting cylindrical member.

  Further, in the cylindrical member connecting step, the large-diameter trunk portion reinforcing member 23 provided at a position closest to the first conical trunk portion 4 is arranged such that the surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23 is The large-diameter body part 3 and the first conical body part 4 are connected in a state of being directed to the opposite side of the first conical body part 4 (right side in FIG. 4). Similarly, in the cylindrical member connecting step, the large-diameter trunk portion reinforcing member 23 provided at the position closest to the second conical trunk portion 5 is a surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23. Are connected to the opposite side (left side in FIG. 4) of the second cone body 5, and the large-diameter body 3 and the second cone body 5 are connected to each other.

  Next, the wave preventing plate 10 is fixed to the reinforcing member 20 welded to the inner peripheral surface of the connecting cylindrical member formed by the cylindrical member connecting step (wave preventing plate fixing step).

  In this wave-blocking plate fixing step, the wave-blocking plate 10 should be fixed by inserting the wave-blocking plate 10 into the inside of the connecting cylindrical member from the opening on the rear end side (right side in FIG. 4) of the connecting cylindrical member. It is carried to the vicinity of the reinforcing member 20 (the space formed between the reinforcing member 20 to be fixed and the reinforcing member 20 provided on both sides of the reinforcing member 20 in the inside of the tank 100). After the orientation of the wave preventing plate 10 is adjusted (turned so that the longitudinal direction of the wave preventing plate 10 faces the radial direction of the reinforcing member 20), the wave preventing plate 10 is fixed to the reinforcing member 20 to be fixed.

  In the cylindrical member connecting step in the present embodiment, the case where the wave preventing plate 10 is inserted into the connecting cylindrical member from the opening on the rear end side in the axial direction of the connecting cylindrical member will be described. The wave blocking plate 10 may be inserted into the connecting cylindrical member from the opening at the front end side in the axial direction of the member.

  In the cylindrical member connecting step in the present embodiment, first, the first small-diameter body portion wave preventing plate 11 is fixed to the first small-diameter body portion reinforcing member 21 (first small-diameter body portion wave preventing plate fixing step).

  Specifically, the first small-diameter body wave-breaking plate 11 is connected to the space (tank on the front side (right side in FIG. 4) of the first small-diameter body-body reinforcing member 21 to which the first small-diameter body wave-breaking plate 11 is to be fixed. 100, the reinforcing member 20 to be fixed (the first small diameter body reinforcing member 21) and the reinforcing member provided next to the reinforcing member 20 to be fixed on the rear end side in the axial direction of the tank 100 20 (space formed between the first small-diameter body reinforcing member 21 or the first conical body reinforcing member 24) and the direction of the first small-diameter body wave-breaking plate 11 is adjusted in the space. After the first small-diameter body wave-breaking plate 11 is rotated, the first small-diameter body wave-breaking plate 11 is fixed to the first small-diameter body reinforcing member 21 to be fixed by a bolt 30 (see FIG. 2).

  The first small diameter body reinforcing member 21 has a surface facing the other axial direction of the first small diameter body reinforcing member 21 at the rear end side of the connecting cylindrical member, that is, the first small diameter body reinforcing member. Since the first small-diameter body wave breaker plate 11 is fixed to the first small-diameter body reinforcing member 21, the fixing operation is the first small-diameter body reinforcing member 21. This can be done in the space on the near side. Therefore, the surface of the first small-diameter trunk reinforcing member 21 facing the other axial direction is the space on the front end side of the connecting cylindrical member, that is, the back side of the first small-diameter trunk reinforcing member 21 (inside the tank 100). Among them, the reinforcing member 20 (first small diameter body reinforcing member 21) to be fixed and the reinforcing member 20 (first small diameter) provided next to the reinforcing member 20 to be fixed on the front end side in the axial direction of the tank 100. The first small-diameter barrel from the rear end side of the connecting cylindrical member as compared to the space formed between the body reinforcing member 21 or the front end of the connecting cylindrical member) and the left side in FIG. The carry-in distance of the partial breaker plate 11 can be shortened.

  After the first small-diameter body wave breaker fixing step is completed, the first cone body wave breaker 14 is fixed to the first cone body reinforcing member 24 (first cone body wave breaker fixing step).

  Specifically, the first conical trunk portion wave-breaking plate 14 is carried to the space on the near side (right side in FIG. 4) of the first conical trunk portion reinforcing member 24, and the first conical trunk portion wave-breaking plate 14 is placed in that space. The first conical body part wave-breaking plate 14 is fixed to the first conical body part reinforcing member 24 with bolts 30.

  The first cone body reinforcing member 24 has a surface facing the other side in the axial direction of the first cone body reinforcing member 24, that is, the side on which the diameter of the first cone body reinforcing member 24 is expanded, that is, the first cone body portion. Since it is directed to the space on the near side of the reinforcing member 24, when the first conical body portion wave preventing plate 14 is fixed to the first conical body portion reinforcing member 24, the fixing operation is performed to reinforce the first conical body portion. This can be done in the space on the front side of the member 24. Therefore, compared with the case where the surface of the first cone body reinforcing member 24 facing the other side in the axial direction is directed to the space on the back side (left side in FIG. 4) of the first cone body reinforcing member 24, The first conical barrel portion wave-breaking plate 14 from the rear end side of the cylindrical member can be reduced in distance, and the length of the first cone barrel portion 4 in the radial direction can be ensured to be large. Since it is easy to change the direction of the conical body part wave breaker 14 (it is easy to turn), the working efficiency of the first conical body part wave breaker plate fixing process can be improved.

  After the first conical trunk portion wave-blocking step is completed, the large-diameter trunk portion wave-breaking plate 13 is fixed to the large-diameter trunk portion reinforcing member 23 (large-diameter trunk portion wave-breaking plate fixing step).

  Specifically, after the large-diameter trunk portion wave breaking plate 13 is carried into a space near the large-diameter trunk portion reinforcing member 23 and the direction of the large-diameter trunk portion wave breaking plate 13 is adjusted in the space, The body part wave-breaking plate 13 is fixed to the large-diameter body part reinforcing member 23 with bolts 30.

  Here, as shown in FIG. 4, in the present embodiment, the large-diameter trunk portion 3 is provided with three large-diameter trunk portion reinforcing members 23. Among them, the first and second large-diameter trunk reinforcing members 23 counted from the front end side (the left side in FIG. 4) of the connecting cylindrical member are provided at positions sandwiching the manhole member 40.

  As described above, the large-diameter trunk portion reinforcing member 23 provided at a position sandwiching the manhole member 40 has the surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23 facing the manhole member 40.

  The first large-diameter trunk portion reinforcing member 23 counted from the front end side of the connecting cylindrical member has a surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23 in front of the large-diameter trunk portion reinforcing member 23. Since it is directed to the space (right side of FIG. 4), when the large-diameter trunk wave breaker plate 13 is fixed to the first large-diameter trunk reinforcement member 23 as counted from the front end side of the connecting cylindrical member. The fixing work is performed in the space on the front side of the large-diameter trunk portion reinforcing member 23.

  The first large-diameter trunk reinforcing member 23 counted from the front end side of the connecting cylindrical member is the large-diameter trunk reinforcing member 23 provided at the position closest to the first conical trunk 24 and has a large diameter. A space on the back side (left side in FIG. 4) of the trunk portion reinforcing member 23 is formed by the inner circumferential surface of the first conical barrel portion 4 and the inner circumferential surface of the large-diameter barrel portion 3. On the other hand, since the space on the near side of the large-diameter trunk portion reinforcing member 23 is formed only by the inner peripheral surface of the large-diameter trunk portion 3, it has a larger diameter than the space on the back side of the large-diameter trunk portion reinforcing member 23. It is easy to change the direction of the trunk part wave breaker 13 (easy to rotate), and it is possible to improve the working efficiency of the large diameter trunk part wave breaker fixing process.

  On the other hand, the second large-diameter trunk reinforcing member 23 counted from the front end side of the connecting cylindrical member has a surface facing the other axial direction of the large-diameter trunk reinforcing member 23 of the large-diameter trunk reinforcing member 23. Since it is directed to the space on the back side (left side in FIG. 4), the large-diameter trunk portion wave breaker plate 13 is fixed to the second large-diameter trunk portion reinforcing member 23 as counted from the front end side of the connecting cylindrical member. At that time, the fixing operation is performed in the space on the back side of the large-diameter trunk portion reinforcing member 23.

  In addition, about the 2nd large diameter trunk | drum reinforcement member 23, since the space of the back side of the 2nd large diameter trunk | drum reinforcement member 23 is formed only by the internal peripheral surface of the large diameter trunk | drum 3, It is possible to secure a wide space for adjusting the direction of the large-diameter trunk wave breaker plate 13 (turning the large-diameter trunk wave breaker plate 13).

  The third large-diameter trunk portion reinforcing member 23 counted from the front end side of the connecting cylindrical member is the large-diameter trunk portion reinforcing member 23 provided at a position closest to the second conical trunk portion 5, and as described above. The surface of the large-diameter barrel reinforcing member 23 facing the other side in the axial direction is the opposite side of the second conical barrel portion 5 (left side in FIG. 4), that is, to the space on the back side of the large-diameter barrel reinforcing member 23. Is directed. Therefore, when the large-diameter trunk wave breaker plate 13 is fixed to the third large-diameter trunk reinforcing member 23 counted from the front end side of the connecting cylindrical member, the fixing operation is performed with the large-diameter trunk reinforcing member. 23 in the space on the back side.

  The large-diameter trunk portion reinforcing member 23 provided at a position closest to the second conical trunk portion 5 has a space on the near side (right side in FIG. 4) of the large-diameter trunk portion reinforcing member 23 as the inner circumference of the second conical trunk portion 5. It is formed by the surface and the inner peripheral surface of the large-diameter trunk portion 3. On the other hand, the space on the back side (left side in FIG. 4) of the large-diameter trunk portion reinforcing member 23 is formed only by the inner peripheral surface of the large-diameter trunk portion 3. It is easier to change the direction of the large-diameter trunk wave breaker 13 than the space, and the working efficiency of the large-diameter trunk wave breaker fixing process can be improved.

  In FIG. 4, the large-diameter body wave-breaking plate 13 is arranged in the vicinity of the large-diameter body reinforcing member 23 provided at the position closest to the second conical body part 5 (to be rotated). ) The process is schematically illustrated. In FIG. 4, in the space on the near side (right side in FIG. 4) and the back side (left side in FIG. 4) of the large diameter body reinforcing member 23 provided at the position closest to the second conical body part 5, the large diameter body is provided. A state in which the longitudinal direction of the partial wave-breaking plate 13 is directed to the vertical direction (vertical direction in FIG. 4) of the large-diameter barrel portion 3 is illustrated. When adhering to 23, the longitudinal direction of the large-diameter trunk part wave-breaking plate 13 is set to be in a state of being directed in the left-right direction of the large-diameter trunk part 3 (perpendicular to the plane of FIG. 4).

  Here, as described above, the large-diameter trunk portion wave-breaking plate 13 has a length dimension connecting one end portion and the other end portion in the longitudinal direction of the large-diameter trunk portion wave-breaking plate 13. The inner diameter of the first small diameter body 1 and the second small diameter body 2 and the first conical body 4 and a part of the second conical body 5 are set larger.

  On the other hand, it is necessary to provide the wave blocking plate 10 for each fixed volume capable of filling the space formed by the inner peripheral surface of the tank 100 and the two wave blocking plates 10 adjacent to each other. It is not possible to freely set the facing interval of the wave preventing plate 10. Therefore, in the large-diameter body part 3, the inner diameter dimension of the large-diameter body part 3 is longer than that of the first small-diameter body part 1, the second small-diameter body part 2, the first conical body part 4, and the second conical body part 5. Accordingly, the facing distance between two adjacent large-diameter body wave-breaking plates 13 is also reduced.

  Further, in the first conical body part 4 or the second conical body part 5, even if the length dimension for adjusting the orientation of the large-diameter body part wave-breaking plate 13 is ensured by design, the large-diameter body part wave-breaking unit is used. Due to dimensional errors in manufacturing the plate 13 or the like, or interference with a weld bead formed by welding the first conical body portion 4 or the second conical body portion 5 and the reinforcing member 20, the large-diameter body wave-breaking plate 13 You may not be able to change direction. Moreover, even if the dimension for adjusting the orientation of the large-diameter trunk portion wave-breaking plate 13 is ensured, the large-diameter trunk portion wave-breaking plate 13 is arranged in a space formed only by the large-diameter trunk portion 3. Compared to the case, there is not enough space and work efficiency is reduced.

  As described above, in the large-diameter trunk portion 3, the distance between two adjacent wave-proof plates 10 becomes small, while the large-diameter trunk portion wave-breaking plate 13 has a large dimension in the longitudinal direction. Accordingly, at least for the large-diameter trunk reinforcing member 23 provided at the position closest to the first conical trunk section 4, the surface facing the other axial direction of the large-diameter trunk reinforcing member 23 is the first conical trunk. For the large-diameter barrel reinforcing member 23 that is directed to the opposite side of the portion 4 and is provided in the vicinity of the second conical barrel portion 5, the surface facing the other axial direction of the large-diameter barrel reinforcing member 23 Since the direction of the large-diameter trunk portion wave breaker plate 13 can be easily adjusted by facing the second conical trunk portion 5, the working efficiency of the large-diameter trunk portion wave breaker fixing step can be improved.

  In the present embodiment, three large-diameter trunk reinforcing members 23 are provided in the large-diameter trunk 3, but four or more large-diameter trunk reinforcing members 23 are provided in the large-diameter trunk 3. Among the four or more large-diameter body reinforcing members 23, the large-diameter body reinforcing member 23 and the manhole member 40 that are provided closest to the first conical body portion 4 and the second conical body portion 5. With respect to the large-diameter trunk portion reinforcing member 23 except for the large-diameter trunk portion reinforcing member 23 provided at a position sandwiching the rim, the surface of the large-diameter trunk portion reinforcing member 23 facing the other side in the axial center direction is connected to the cylindrical member. It is desirable to face the rear end side. Thereby, compared with the case where the surface which faces the axial direction other side of the large diameter trunk | drum reinforcement member 23 is orient | assigned to the front-end side of a connection cylindrical member, it is large which should adhere from the rear-end side of a connection cylindrical member. It is possible to shorten the carry-in distance of the large-diameter trunk portion wave breaker 13 up to the radial trunk portion reinforcing member 23.

  After the large-diameter body wave-blocking plate fixing step is completed, the second cone-body wave-breaking plate 15 (see FIG. 3) is fixed to the second cone-body wave-reinforcing member 25 (second cone-body wave-blocking plate fixing). Process).

  Specifically, the second conical body portion wave breaker plate 15 is carried into a space on the back side (left side in FIG. 4) of the second conical body portion reinforcing member 25, and the second conical body portion wave breaker plate 15 is used in that space. After adjusting the direction of (the second conical body portion wave breaker plate 15 is turned), the second conical body portion wave breaker plate 15 is fixed to the second conical body portion reinforcing member 25 with a bolt 30.

  The second conical trunk portion reinforcing member 25 has a surface facing the other axial direction of the second conical trunk portion reinforcing member 25, that is, the side on which the diameter of the second conical trunk portion reinforcing member 25 is increased, that is, the second conical trunk portion. Since it is directed to the space on the back side of the reinforcing member 25, when the second conical body wave-breaking plate 15 is fixed to the second conical body reinforcing member 25, the fixing operation is performed to reinforce the second conical body part. This can be done in the space behind the member 25. Therefore, compared with the case where the surface facing the other axial direction of the second cone body reinforcing member 25 is directed to the space on the near side (right side in FIG. 4) of the second cone body reinforcing member 25, Since it is possible to easily change the direction of the second conical body portion wave-breaking plate 15 (to be easily turned), the second conical body portion can be prevented from breaking. The working efficiency of the plate fixing process can be improved.

  After the second conical body part wave-blocking plate fixing step is completed, the second small-diameter body wave-breaking plate 12 (see FIG. 3) is fixed to the second small-diameter body part reinforcing member 22 (second small-diameter body wave-breaking plate). Fixing process).

  Specifically, the second small-diameter body wave breaker 12 is carried into the space on the near side (right side in FIG. 4) of the second small-diameter body reinforcing member 22 to which the second small-diameter body wave breaker 12 is to be fixed. Then, after the direction of the second small-diameter trunk wave breaker 12 is adjusted in the space (the second small-diameter trunk wave breaker 12 is turned), the second small-diameter trunk wave breaker 12 is to be fixed. 2 The bolt 30 is fixed to the small-diameter trunk reinforcing member 22.

  The second small-diameter body reinforcing member 22 has a surface facing the other axial direction of the second small-diameter body reinforcing member 22 on the rear end side of the connecting cylindrical member, that is, the second small-diameter body reinforcing member 22. Since it is directed to the space on the near side, when the second small-diameter trunk wave preventing plate 12 is fixed to the second small-diameter trunk reinforcing member 22, the fixing operation is performed in front of the second small-diameter trunk reinforcing member 22. Can be done in the side space. Accordingly, it is possible to shorten the carry-in distance of the second small-diameter trunk wave preventing plate 12 from the rear end side of the connecting cylindrical member.

  For the first conical body reinforcing member 24, the large diameter body reinforcing member 23 and the second conical body reinforcing member 25, the first conical body wave preventing plate 14 and the large diameter body portion wave preventing plate 13 are used. And the 2nd cone body part wave-proof board 15 is provided 2 sheets each. In order to suppress the fluctuation of the liquid level of the filling in the tank 100, the first conical body wave-breaking plate is increased by the increase in the inner diameters of the first conical body part 4, the large-diameter body part 3 and the second conical body part 5. 14, where the large-diameter body wave-breaking plate 13 and the second conical body wave-breaking plate 15 need to be enlarged, the first conical-body wave-breaking plate 14, the large-diameter body wave-breaking plate 13 and the second By dividing the conical body portion wave breaker plate 15 into two pieces, the weight per piece can be suppressed. Thereby, it is easy to perform turning when carrying in and adjusting the orientation of the first conical body wave-breaking plate 14, the large-diameter body wave-breaking plate 13, and the second conical body wave-breaking plate 15 inside the connecting cylindrical member. can do.

  Next, the tank 100 is formed by welding the end plate 6 to the other axial end of the connecting cylindrical member to which the wave preventing plate 10 is fixed in the wave preventing plate fixing step (second end plate welding step).

  In this end plate welding process, the welding operation is performed from both the inner peripheral surface side and the outer peripheral surface side of the tank 100. Therefore, when performing the welding operation on the inner peripheral surface side of the tank 100, the operator who possesses the welding tool Enters the inner peripheral surface side of the tank 100 from the opening formed in the tube seat 40a of the manhole member 40, and performs a welding operation on the other end side of the connecting cylindrical member, that is, inside the second small-diameter body 2.

  Compared to the large-diameter body 3, the second small-diameter body 2 can ensure a large gap between the two adjacent wave-proof plates 10, so that it is easy to secure a work space when welding the end plate 6. .

  In the present embodiment, the end plate 6 is welded to the other axial end of the connecting cylindrical member in the second end plate welding step, but the portion constituting the second small diameter body portion 2 in the first end plate welding step. When the end plate 6 is welded to the one cylindrical member, the end plate 6 is welded to one end in the axial center direction of the connecting cylindrical member, that is, the first small-diameter body portion 1 in the second mirror welding step.

  As described above, the present invention has been described based on the embodiments, but the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

  For example, the numbers of the wave preventing plates 10 and the reinforcing members 20 provided in the tank 100 are only examples, and other numbers can naturally be used.

  In the above embodiment, the present invention relates to the first small-diameter body part 1, the second small-diameter body part 2, the large-diameter body part 3, the first conical body part 4, the second conical body part 5, and the end plate. However, the present invention is not necessarily limited to this. For a cylindrical tank in which the diameter illustrated in the tank 500 shown in FIG. You may apply. Thereby, the rigidity with respect to the radial deformation of the tank 500 can be increased uniformly with respect to the circumferential direction of the tank 500.

  In the above embodiment, the case where all the wave preventing plates 10 are fixed to the annular reinforcing member 20 has been described. However, the invention is not necessarily limited to this, and the annular reinforcing member 20 is not necessarily limited to the tank 100. Instead of this, an arc-shaped fixing member 520 shown in FIG. 5 may be used, and the wave preventing plate 10 may be fixed to the fixing member 520. Since the fixing member 520 is formed in an arc shape, the tank 100 can be reduced in weight by being used instead of the arc-shaped reinforcing member 20.

  In the first small-diameter body 1 and the second small-diameter body 2, the portion where the fixing member 520 is not welded, that is, the fixing member 520 is welded because the inner diameter is reduced. It is possible to reduce the length in the circumferential direction of the portion whose rigidity is lower than that of the portion. Further, when the tank semi-trailer is pulled by a towing vehicle (not shown), the first small-diameter body portion 1 of the tank 100 is inclined upward from the second small-diameter body portion 2, and the tank 100 is filled. The pressure acting on the first small-diameter body wave breaker plate 11 is smaller than that of the second small-diameter body part 2 due to the liquid level fluctuation of the filled material. Therefore, even when the fixing member 520 is used instead of a part of the first small-diameter trunk portion reinforcing member 21, it is easy to avoid dropping from the fixing member 520 from the first small-diameter trunk portion wave preventing plate 11. be able to.

  In the above embodiment, the case where the manhole member attaching process is performed before the reinforcing member welding process has been described. However, the present invention is not necessarily limited to this, and the manhole member attaching process is performed after the reinforcing member welding process. May be. In this case, the manhole member 40 is attached to the manhole member 40 side by directing the surface facing the other axial direction of the large-diameter trunk reinforcing member 23 provided at a position sandwiching the manhole member 40 toward the manhole member 40. It is possible to avoid obstruction by the radially inner end of the protruding large-diameter trunk reinforcing member 23. Therefore, the work efficiency when attaching the manhole member 40 can be improved.

  In the above embodiment, the case where the first end plate welding process is performed before the manhole member attaching step has been described. However, the present invention is not necessarily limited to this, and the first end plate welding step is performed simultaneously with the manhole member attaching step. Or you may perform after a manhole member attachment process.

  In the above embodiment, the case where the first end plate welding process is performed before the second end plate welding process has been described. However, the present invention is not necessarily limited to this, and the first end plate welding process is performed simultaneously with the second end plate welding process. It may be done.

DESCRIPTION OF SYMBOLS 100 Tank 1 1st small diameter trunk | drum 2 2nd small diameter trunk | drum 3 Large diameter trunk | drum 4 1st cone trunk | drum 5 2nd cone trunk | drum 10 Wave-proof board 13 Large-diameter trunk | drum wave-proof board 14 1st cone trunk | drum prevention Corrugated plate 15 Second conical trunk portion breaker plate 20 Reinforcing member 23 Large diameter trunk portion reinforcing member 24 First conical trunk portion reinforcing member 25 Second conical trunk portion reinforcing member 40 Manhole member 41 Tube seat

  The present invention relates to a tank semi-trailer, and more particularly to a tank semi-trailer that prevents the breaker plate from falling off by suppressing deformation of the tank due to internal pressure acting in the tank.

  In a tank semi-trailer equipped with a tank filled with a liquid filling material, a wave preventing plate is arranged inside the tank for suppressing the liquid level fluctuation of the filling material (Patent Document 1).

  Here, an internal structure of a tank 500 used in a conventional tank semi-trailer will be described with reference to FIG. 5A is a side sectional view of a conventional tank semi-trailer tank 500, and FIG. 5B is an enlarged sectional view of the tank 500 taken along the line Vb-Vb in FIG. 5A. In FIG. 5A, a part of the tank 500 is viewed in cross section. In addition, arrows UD, LR, and FB in FIGS. 5A and 5B indicate the vertical direction, the horizontal direction, and the front-rear direction of the tank 500, respectively.

  As shown in FIGS. 5 (a) and 5 (b), a plurality of wave-proof plates 510 formed in a plate shape are formed inside the tank 500 while being spaced apart from each other by a predetermined interval (see FIG. 5). 5 (a) in the left-right direction), and a pair of fixing members 520 formed in an arc shape are provided at positions corresponding to the plurality of wave blocking plates 510.

  The pair of fixing members 520 are members for fixing the wave preventing plate 510 to the inside of the tank 500, and the radially outer ends of the pair of fixing members 520 are the left side and the right side of the tank 500 (FIG. 5B). The inner peripheral surfaces located on the left side and the right side are welded to each other, and a wave preventing plate 510 is fixed to the pair of fixing members 520 by bolts 530.

JP 10-151985 (paragraph [0022])

  In the conventional tank 500 described above, the fixing member 520 formed in an arc shape is welded to the inner peripheral surface located in the left-right direction (FIG. 5B, left-right direction) of the tank 500, and the vertical direction of the tank 500 ( It is not welded to the inner peripheral surface located in FIG. For this reason, the portion of the tank 500 positioned in the vertical direction has lower rigidity against deformation in the radial direction of the tank 500 than the portion positioned in the horizontal direction. Therefore, when the filling is filled in the tank 500 in a high pressure state, a portion positioned in the vertical direction of the tank 500 is deformed linearly by the internal pressure in the tank 500, and a cross section perpendicular to the axial direction of the tank 500. Since the shape is a substantially elliptical shape extending in the left-right direction of the tank 500, a large shearing force acts on the bolt 530 that fixes the wave preventing plate 510 to the reinforcing member 520. As a result, there is a problem in that the bolt 530 is easily damaged, and the wave preventing plate 510 is easily detached from the fixing member 520 accordingly.

  The present invention has been made to solve the above-described problems, and provides a tank semi-trailer that prevents the breaker plate from falling off by suppressing deformation of the tank due to internal pressure acting in the tank. It is aimed.

Means for Solving the Problems and Effects of the Invention

  According to the tank semi-trailer according to claim 1, the reinforcing member is formed in an annular shape set to an outer diameter corresponding to the inner diameter of the tank, and the radially outer end of the reinforcing member is the entire inner peripheral surface of the tank. Since it is welded over the circumference, the rigidity against deformation in the radial direction of the tank can be increased uniformly in the circumferential direction of the tank.

  In addition, since the reinforcing member has a substantially L-shaped cross section, the rigidity against deformation of the reinforcing member (for example, the radial direction or the twist direction of the reinforcing member) can be increased.

  Therefore, even when the inside of the tank is filled with a high-pressure state, deformation of the tank and the reinforcing member in the radial direction can be suppressed, so that the cross-sectional shape perpendicular to the axial direction of the tank is deformed. As a result, it is possible to prevent the breaker plate from falling off due to deformation of the tank.

Furthermore , there is an effect that it is possible to secure a wide working space when the wave preventing plate is fixed to the large diameter body reinforcing member provided at the position closest to the first conical body.

  That is, for example, after the first small diameter body, the second small diameter body, the large diameter body, the first conical body, and the second conical body are integrally formed with the reinforcing member welded to the inner peripheral surface. The wave-proof plate is carried into the tank from the axial direction end side of the second small-diameter body portion that opens, and the wave-proof plate is fixed to the reinforcing member, and the axial-direction end portion of the second small-diameter body portion that opens. In the case of manufacturing a tank by closing the side, the large-diameter body wave breaker plate has a length dimension in the direction connecting the one end side and the other end side fixed to the large-diameter body reinforcement member. Since the size is set to be larger than the inner diameter of the trunk reinforcement member, the large-diameter trunk wave-breaking plate is brought into the large-diameter trunk section in a tilted state, and the large-diameter trunk wave-breaking plate is fixed. Rotate the large-diameter body wave breaker in the vicinity of the large-diameter body reinforcement member so that the direction connecting the one end side and the other end side of the large-diameter body wave breaker faces the radial direction of the large-diameter trunk part Let After securing the large 径胴 portion reinforcing member to be secured to the large-径胴 part explosion wave plate.

  Here, among the spaces formed on both sides in the axial direction of the large-diameter trunk reinforcing member provided at the position closest to the first conical trunk, the large-diameter trunk wave-breaking plate is inserted from the second small-diameter trunk side. The space formed on the back side of the large-diameter trunk reinforcing member (the first conical trunk side with respect to the large-diameter trunk reinforcing member) when carried in is the inner circumferential surface of the large-diameter trunk and the first conical cylinder. The space formed on the front side of the large-diameter trunk reinforcing member (on the opposite side of the first conical trunk portion with respect to the large-diameter trunk reinforcing member) It is formed only by the inner peripheral surface of the diameter barrel portion. That is, in the space formed on the opposite side of the first cone body, the large-diameter body wave-breaking plate interferes with the first cone body in advance compared to the space formed on the first cone body side. As much as possible, the large-diameter body wave breaker can be easily turned.

  In this regard, the large-diameter barrel reinforcing member provided at a position closest to the first conical barrel portion has a surface facing the other axial direction of the large-diameter barrel reinforcing member on the opposite side of the first conical barrel portion. The large-diameter body wave-breaking plate carried in from the second small-diameter body part side is turned in the space formed on the opposite side of the first conical body part, and then the large-diameter body wave-breaking part The plate can be fixed to the large-diameter trunk reinforcing member to be fixed.

  At this time, the large-diameter body wave breaker fixed to the large-diameter body reinforcing member provided at the position closest to the first conical body part is provided at the position closest to the first conical body part. Since it is only necessary to carry in to the front side of the large-diameter trunk reinforcing member, the distance to carry the wave-proof plate in the large-diameter trunk as compared with the case of bringing the wave-proof board into the deep side of the large-diameter trunk reinforcing member. Therefore, the working efficiency of welding the large-diameter body wave-breaking plate to the large-diameter body reinforcing member can be improved.

  Similarly, the large-diameter trunk portion reinforcing member provided at the position closest to the second conical trunk portion is the second small-diameter trunk portion side of the space formed on both axial sides of the large-diameter trunk portion reinforcing member. The space formed on the back side of the large-diameter trunk reinforcing member when it is carried in from the side (the opposite side of the second conical trunk portion with respect to the large-diameter trunk reinforcing member) is only by the inner peripheral surface of the large-diameter trunk portion. The space formed on the front side of the large-diameter trunk reinforcing member (the second conical trunk side with respect to the large-diameter trunk reinforcing member) is formed on the inner peripheral surface of the large-diameter trunk. It is formed with the internal peripheral surface of the 1st cone body part. That is, in the space formed on the opposite side of the second cone body portion with respect to the large diameter body reinforcement member, the large diameter body wave breaker plate is second in comparison with the space formed on the second cone body side. Since the interference with the conical barrel portion can be avoided in advance, the large-diameter barrel portion wave breaker can be easily turned.

  In this regard, the large-diameter barrel reinforcement member provided at the position closest to the second cone barrel portion has a surface facing the other axial direction of the large-diameter barrel reinforcement member opposite to the second cone barrel portion. The large-diameter body wave-breaking plate carried from the second small-diameter body part side is turned in the space formed on the opposite side of the second conical body part, and then the large-diameter body wave-breaking part The plate can be fixed to the large-diameter trunk reinforcing member.

  As described above, when the large-diameter body reinforcing plate is fixed to the large-diameter body reinforcing member provided at the position closest to the first conical body section or the second conical body section, Since the large-diameter trunk wave breaker can be fixed to the large-diameter trunk reinforcing member after the large-diameter trunk wave-breaking plate is turned in the space formed by the peripheral surface alone, The working efficiency of fixing the corrugated plate to the large-diameter trunk reinforcing member can be improved.

  The first small diameter body, the second small diameter body, the large diameter body, the first conical body, and the second conical body, which are integrally welded with the reinforcing member, are opened and then opened. Even when the wave preventing plate is carried into the tank from the axial end side of the body portion, the same effect as described above can be obtained.

Moreover , the length dimension of the direction which connects the one end side and the other end side of a 1st cone body part wave-shielding board and a 2nd cone body part wave-breaking board is the 1st cone body part wave-proof board and a 2nd cone body part. The surface of the first cone body reinforcing member, which is set larger than the inner diameters of the first cone body reinforcing member and the second cone body reinforcing member to which the wave preventing plate is to be fixed, faces the other side in the axial direction of the first cone body reinforcing member. Since it is directed to the body side, there is an effect that it is possible to secure a wide working space when the first conical body portion wave breaker is fixed to the first conical body portion reinforcing member. Similarly, since the surface facing the other axial direction of the second cone body reinforcing member is directed to the large-diameter body portion, the second cone body wave-breaking plate is fixed to the second cone body reinforcing member. There is an effect that it is possible to secure a wide working space when performing the operation.
Further, since the two reinforcing members provided at positions sandwiching the manhole member have their surfaces facing the other axial direction facing the manhole member, the axial center in which the radially inner side of the reinforcing member is bent. Compared to the case where one direction side is directed to the manhole member, the welding operation of the end portion on the radially outer side of the reinforcing member to the inner peripheral surface of the tank is bent to one side in the axial direction of the reinforcing member. Can be avoided. Therefore, there is an effect that it is possible to improve the working efficiency when welding the radially outer end of the reinforcing member to the inner peripheral surface of the tank.

According to the tank semi-trailer according to claim 2 , in addition to the effect produced by the tank semi-trailer according to claim 1, a manhole member that communicates the inside and the outside of the tank is attached below the large-diameter body of the tank. Therefore, the manhole member, which is a heavy object, can be disposed at a lower position in the height direction of the tank. Therefore, the center of gravity of the tank can be lowered, and as a result, the running stability of the tank semi-trailer can be ensured.

(A) is a top view of the tank of the tank semitrailer in one embodiment of this invention, (b) is sectional drawing of the tank in the Ib-Ib line | wire of Fig.1 (a). It is sectional drawing of the tank in the II-II line of Fig.1 (a). It is a partial expanded sectional view of a tank. It is a partial expanded sectional view of a tank. (A) is a side sectional view of the tank of a conventional tank semitrailer, and (b) is an enlarged sectional view of the tank semitrailer along the line Vb-Vb in FIG. 5 (a).

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, with reference to FIG. 1A, an external configuration of a tank 100 used in a tank semi-trailer according to an embodiment will be described. FIG. 1A is a top view of a tank 100 of a tank semi-trailer according to an embodiment of the present invention. In addition, the arrows UD, LR, and FB in FIG. 1A indicate the vertical direction, the left-right direction, and the front-rear direction of the tank 100, respectively, and the same applies to FIG. .

  As shown in FIG. 1 (a), the tank semi-trailer is configured by attaching a traveling device (not shown) to a tank 100 in which a liquid filling exemplified by LPG is filled in a high-pressure state.

  The tank 100 includes a cylindrical first small-diameter body 1 located on the front end side (left side in FIG. 1A) of the tank 100 and a cylinder located on the rear end side (right side in FIG. 1A) of the tank 100. -Shaped second small-diameter barrel 2, a cylindrical large-diameter barrel 3 positioned between the first small-diameter barrel 1 and the second small-diameter barrel 2, and the first small-diameter barrel 1 and the large-diameter barrel A conical first conical body 4 that concentrically connects 3, a second small-diameter body 2 and a conical second conical body 5 that concentrically connect the large-diameter body 3, and a first small-diameter The side of the body 1 opposite to the side to which the first cone body 4 is connected (left side in FIG. 1A) and the side of the second small-diameter body 2 opposite to the side to which the second cone body 4 is connected (see FIG. 1 (a) right side) and a hemispherical end plate 6.

  The first small diameter body 1 and the second small diameter body 2 are set to have the same diameter, and the diameter thereof is set to be smaller than the diameter of the large diameter body 3. Moreover, the 1st cone body part 4 and the 2nd cone body part 2 can be made into the same shape by setting the 1st small diameter trunk | drum 1 and the 2nd small diameter trunk | drum 2 to the same diameter.

  Next, the internal configuration of the tank 100 will be described with reference to FIGS. FIG. 1B is a cross-sectional view of the tank 100 taken along the line Ib-Ib in FIG. 1A, and a part of the tank 100 is viewed in cross section. FIG. 2 is an enlarged cross-sectional view of the tank 100 taken along the line II-II in FIG. FIG. 3 is a partial enlarged cross-sectional view of the tank 100. In FIG. 1B to FIG. 3, the wave preventing plate 10 and the reinforcing member 20 are schematically illustrated in order to simplify the drawings and make the description easy to understand.

  As shown in FIGS. 1B to 3, the tank 100 is arranged inside the tank 100 along the axial direction (the left-right direction in FIG. 1B) with a predetermined interval. The plurality of wave blocking plates 10 provided and the plurality of reinforcing members 20 to which the plurality of wave blocking plates 10 are fixed and welded to the inner peripheral surface of the tank 100 are mainly provided.

  The wave preventing plate 10 is a member that suppresses the liquid level fluctuation of the filling material filled in the tank 100, and has a substantially U-shaped cross section. By forming the cross section of the wave preventing plate 10 in a substantially U-shape, it is possible to ensure the rigidity against the pressure received from the filler by the liquid level fluctuation of the filler.

  The reinforcing member 20 is a member that fixes the wave preventing plate 10 inside the tank 100. The reinforcing member 20 is formed in an annular shape set to an outer diameter corresponding to the inner diameter of the tank 100, and the cross-sectional shape along the axial direction of the reinforcing member 20 is on one side in the axial direction with respect to the radial inner side of the reinforcing member 20. It is formed in a substantially L-shaped cross section bent to (for example, the back side in the vertical direction in FIG. 2). By forming the cross-sectional shape of the reinforcing member 20 to be substantially L-shaped, it is possible to increase the rigidity against deformation of the reinforcing member 20 (for example, deformation of the reinforcing member 20 in the radial direction, the torsional direction, and the like).

  The reinforcing member 20 is welded at the radially outer end of the reinforcing member 20 over the entire inner peripheral surface of the tank 100. Thereby, the rigidity with respect to the deformation | transformation to the radial direction of the tank 100 can be improved.

  The wave preventing plate 10 is fixed to the reinforcing member 20 at one end side and the other end side in the longitudinal direction (left and right direction in FIG. 2) of the wave preventing plate 10. The length dimension connecting the one end side and the other end side in the longitudinal direction of the wave preventing plate 10 (the length of the portion having the largest length dimension among the length dimensions connecting the one end side and the other end side of the wave preventing plate 10 Is set to a size larger than the inner diameter of the reinforcing member 20 to be fixed, and one end side and the other end side of the wave preventing plate 10 are formed in an arc shape corresponding to the inner peripheral surface of the tank 100. Yes. The wave preventing plate 10 is fixed by a bolt 30 in a state in which the wave preventing plate 10 is in contact with a surface facing the other side in the axial direction of the reinforcing member 20 (for example, the front side in the vertical direction in FIG. 2).

  As described above, the radially outer end of the annular reinforcing member 20 formed in an L-shaped cross section is welded over the entire inner peripheral surface of the tank 100 to deform the tank 100 in the radial direction. Therefore, the rigidity against deformation in the radial direction of the tank 100 can be increased uniformly in the circumferential direction of the tank 100. Therefore, even when the tank 100 is filled with a filling material in a high-pressure state, the tank 100 and the reinforcing member 20 can be prevented from being deformed in the radial direction. It can suppress that (refer FIG. 2) deform | transforms. Thereby, since generation | occurrence | production of the shearing force resulting from a deformation | transformation of the tank 100 and the reinforcement member 20 can be suppressed with respect to the bolt 30 which fixes the wave-proof board 10 to the reinforcement member 20, damage to the bolt 30 can be avoided, As a result, it is possible to prevent the breaker plate 10 from being detached from the reinforcing member 20 due to the breakage of the bolt 30.

  Further, the reinforcing member 20 is formed with a notch 20a cut out from the outside in the radial direction toward the inside, and the reinforcing member 20 faces the notch 20a below the tank 100 (downward in FIG. 2). It is fixed to the inner peripheral surface of the tank 100. As a result, the hole formed by the notch 20a and the inner peripheral surface of the tank 100 communicates with the space on one side in the axial direction of the tank 100 with the reinforcing member 20 therebetween and the space on the other side. It can be a hole. Thereby, it is possible to avoid the filling material flowing along the inner peripheral surface located below the tank 100 inside the tank 100 from being dammed by the reinforcing member 20.

  A manhole member 40 that communicates the inside and the outside of the tank 100 is disposed below the large-diameter body portion 3 of the tank 100. The manhole member 40 is a part that forms a passage when an operator enters the inside of the tank 100 for inspection or the like, and an inner periphery of a hole formed in an inner peripheral surface located below the large-diameter trunk portion 3. An annular tube seat 40a attached to the surface, and a lid (not shown) that is attached to the tube seat 40a and closes an opening formed on the inner peripheral side of the tube seat 40a. The seat 40a is provided in a state of protruding radially inward (upper side in FIG. 3) from the inner peripheral surface of the large-diameter trunk 3.

  While the manhole member 40 is heavy (about 90 kg in the present embodiment), the manhole member 40 is attached to the lower part of the large-diameter trunk 3 so that the manhole member 40 is placed at the height of the entire tank 100. It can be placed at a lower position in the direction. Therefore, the center of gravity of the tank 100 can be lowered. As a result, the running stability of the tank semi-trailer can be ensured, and it is possible to easily prevent the tank semi-trailer from overturning due to the inclination in the left-right direction.

  Next, a method for manufacturing the tank 100 will be described with reference to FIG. FIG. 4 is an enlarged cross-sectional view of the tank 100, in which a process of carrying the wave-breaking plate 10 to be fixed to the reinforcing member 20 welded to the large-diameter trunk 3 into the large-diameter trunk 3 is illustrated. ing. FIG. 4 shows a cross section corresponding to the cross section taken along line Ib-Ib in FIG. 1A. In order to simplify the drawing and make the explanation easy to understand, the wave blocking plate 10 and the reinforcing member 20 are shown. This is schematically shown.

  Here, among the reinforcing members 20 welded to the inside of the tank 100, those to be welded to the first small diameter body 1 are welded to the first small diameter body reinforcing member 21 and the second small diameter body 2. What is welded to the second small-diameter body reinforcing member 22, what is welded to the large-diameter body part 3 is large-diameter body reinforcing member 23, and what is welded to the first conical body part 4 is first-cone body reinforcing member 24, what is welded to the second cone body 5 is defined as a second cone body reinforcement member 25.

  Further, among the wave preventing plates 10 disposed inside the tank 100, those fixed to the first small diameter body reinforcing member 21 are the first small diameter body wave preventing plate 11 and the second small diameter body reinforcing member 22. Those fixed to the second small-diameter body wave-breaking plate 12 (see FIG. 3), and those disposed on the large-diameter body-reinforcing member 23 are large-diameter body wave-breaking plates 13 and the first conical body-body reinforcement. What is fixed to the member 24 is defined as the first conical body portion wave breaker 14 and what is fixed to the second conical body portion reinforcing member 25 is defined as the second conical body portion wave breaker 15 (see FIG. 3). .

  As shown in FIG. 4, first, a plate material is formed into a cylindrical shape or a conical shape to form a plurality of cylindrical members (cylindrical member forming step).

  The cylindrical tubular member is a part that constitutes the first small-diameter body part 1, the second small-diameter body part 2, or the large-diameter body part 3, and the first small-diameter body part 1 and the second small-diameter body part 2 Alternatively, it is formed into a shape corresponding to the large-diameter trunk portion 3. Further, the conical cylindrical member is a part constituting the first conical barrel portion 4 or the second conical barrel portion 5 and has a shape corresponding to the first conical barrel portion 4 or the second conical barrel portion 5. It is molded into.

  Note that, for example, the first small-diameter body portion 1 may be configured by a single cylindrical member, or may be configured by connecting a plurality of cylindrical members to each other in a cylindrical member connecting step described later.

  Here, when the diameters of the first small diameter body 1 and the second small diameter body 2 are set to be the same, the cylindrical member constituting the first small diameter body 1 and the cylinder constituting the second small diameter body 2. A member can be made into the same shape. Similarly, when the first cone body portion 4 and the second cone body portion 5 are formed in the same shape, the conical member constituting the first cone body portion 4 and the conical member constituting the second cone body portion 5. And the same shape. In this case, since the number of types of cylindrical members and conical members to be molded in the cylindrical member molding step can be reduced, work efficiency in the cylindrical member molding step can be improved.

  Next, one axial direction end of one cylindrical member used as the site | part which comprises the 1st small diameter trunk | drum 1 or the 2nd small diameter trunk | drum 2 among the cylindrical cylindrical members shape | molded by the cylindrical member shaping | molding process. The end plate 6 is welded to the side (first end plate welding process). In the present embodiment, the end plate 6 is attached to one cylindrical member that is a part constituting the first small-diameter trunk.

  In the first end plate welding step, the end plate 6 and the cylindrical member are welded from both the outer peripheral surface side and the inner peripheral surface side of the cylindrical member. Therefore, by performing the first end plate welding step before the cylindrical member connecting step described later, a work space for performing welding work from the inner peripheral surface side of the cylindrical member can be secured, so the first end plate welding The work efficiency of the process can be improved.

  Next, the manhole member 40 is attached to one cylindrical member which is a part constituting the large-diameter body portion 3 among the cylindrical cylindrical members formed by the cylindrical member forming step (manhole member attachment). Process).

  Next, the outer peripheral side end of the reinforcing member 20 is welded to the cylindrical member formed by the cylindrical member forming step over the entire inner peripheral surface of the cylindrical member (reinforcing member welding step).

  In this reinforcing member welding step, in the cylindrical member to which the end plate 6 is welded among the cylindrical members that constitute the first small-diameter barrel portion 1, the other axial direction other side of the first small-diameter barrel portion reinforcing member 21 is used. The end portion on the radially outer side of the first small-diameter trunk portion reinforcing member 21 is welded to the inner peripheral surface of the cylindrical member with the surface facing toward the opposite side of the end plate 6.

  Further, when welding the first small-diameter trunk reinforcing member 21 or the second small-diameter trunk reinforcing member 22 to the cylindrical member constituting the first small-diameter trunk 1 or the second small-diameter trunk 2, When welding a plurality of first small-diameter body reinforcement members 21 or second small-diameter body reinforcement members 22 to the inner peripheral surface, all of the first small-diameter body reinforcement members 21 or the second small-diameter body reinforcement members 22 The end portion on the radially outer side of the first small-diameter body reinforcing member 21 or the second small-diameter body reinforcing member 22 is cylindrical with the surface facing the other side in the axial direction facing one of the axial directions of the cylindrical member. It welds to the inner peripheral surface of a member.

  In the reinforcing member welding step, when the large-diameter trunk portion reinforcing member 23 is welded to the cylindrical member constituting the large-diameter trunk portion 3, a manhole is formed in the axial direction (left and right direction in FIG. 4) of the large-diameter trunk portion 3. The large-diameter trunk portion reinforcing member 23 provided at a position sandwiching the member 40 is a large-diameter trunk portion reinforcing member in a state where the surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23 faces the manhole member 40. 23 is welded to the inner peripheral surface of a cylindrical member that is a part constituting the large-diameter body 3.

  The large-diameter trunk portion reinforcing member 23 is formed in an annular shape having a substantially L-shaped cross section in which the radially inner side faces the axial center side of the large-diameter trunk portion reinforcing member 23. The radially outer end of the large-diameter trunk reinforcing member 23 is the inner peripheral surface of the large-diameter trunk 3 with one axial center side facing the radially inner side of the partial reinforcing member 23 facing the manhole member 40. When welding, the radially inner end projecting toward the side where the manhole member 40 is located with respect to the radially outer end of the large-diameter trunk reinforcing member 23 to be welded and the large-diameter trunk reinforcing member 23 A welding operation must be performed while a welding tool used for welding is inserted between the tube seat 40a of the manhole member 40 protruding from the peripheral surface. As a result, the efficiency of the welding operation is reduced, or welding to the lower part of the inner peripheral surface of the large-diameter trunk part 3 of the large-diameter trunk part reinforcing member 23 (the part located in the vicinity of the tube seat 40a) becomes impossible. There is a fear.

  Therefore, welding the large-diameter trunk portion reinforcing member 23 in the reinforcing member welding process by directing the surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23 provided at a position sandwiching the manhole member 40 toward the manhole member 40. The work efficiency can be improved, and the quality of the tank 100 can be improved by reliably welding.

  In the reinforcing member welding step, when the first conical body reinforcing member 24 or the second conical body reinforcing member 25 is welded to the conical member constituting the first conical body part 4 or the second conical body part 5. The first conical body reinforcing member 24 and the second conical body reinforcing member 25 face the other side in the axial direction toward the side where the diameter of the conical cylindrical member is enlarged, The end of the cone body reinforcing member 24 or the second cone body reinforcing member 25 in the outer side in the radial direction is an inner part of a conical cylindrical member that becomes a part constituting the first cone body part 4 or the second cone body part 5. Weld to the peripheral surface.

  Next, a plurality of cylindrical members (cylindrical member and conical member) to which the reinforcing member 20 is welded by the reinforcing member welding step are concentrically connected, and the first small-diameter body portion 1, the second small-diameter body portion 2, and the large-diameter portion. A connecting tubular member is formed by integrally forming the body portion 3, the first conical body portion 4 and the second conical body portion 5 (tubular member connecting step).

  In this connecting tubular member, a large diameter body 3 is located between the first small diameter body 1 and the second small diameter body 2, and the first small diameter body 1 and the large diameter body 3 are in a first cone. The second small diameter body 2 and the large diameter body 3 are connected by a second conical body 5 while being connected by a body 4. That is, the connecting cylindrical member is formed in a shape in which the diameter at the central portion in the axial direction is larger than the diameters at both end portions in the axial direction, and the axial direction in which the second small diameter body portion 2 of the connecting cylindrical member is located. The rear end (the end on the right side in FIG. 4) is open.

  In this cylindrical member connecting step, welding is performed from both the outer peripheral surface side and the inner peripheral surface side of the cylindrical member in order to connect a plurality of cylindrical members. Therefore, if the wave preventing plate 10 is fixed to the reinforcing member 20 at a stage prior to the cylindrical member connecting step, the work space for performing the welding work from the inner peripheral surface side of the cylindrical member is the wave preventing plate. Limited by 10. Therefore, the work efficiency of the cylindrical member connecting step can be improved by performing the cylindrical member connecting step before fixing the wave preventing plate 10 to the reinforcing member 20.

  Further, in the cylindrical member coupling step, all the first small-diameter trunk reinforcing members 21 face the other axial direction, and all the second small-diameter trunk reinforcing members 22 face the other axial center. It is desirable to direct either of them toward the axial direction of the tank 100. In the present embodiment, the end plate 6 is welded to one cylindrical member that constitutes the first small-diameter body portion 1, and the other axial direction other side of the first small-diameter body reinforcing member 21 welded to the cylindrical member is attached. Since the facing surface is directed to the opposite side of the end plate 6, the surface facing the other axial direction of the first small-diameter trunk reinforcing member 21 is directed to the rear end side (right side in FIG. 4) of the connecting cylindrical member, As a result, the surfaces of all the first small-diameter body reinforcing members 21 facing the other axial direction and the surfaces of all the second small-diameter body reinforcing members 22 facing the other axial direction are the rear of the connecting cylindrical member. It is directed to the end side (right side in FIG. 4).

  The end plate 6 is welded to one cylindrical member constituting the second small-diameter body portion 2, and the surface facing the other axial direction of the second small-diameter body reinforcing member 22 welded to the cylindrical member is the end plate 6, the surface facing the other axial direction of all the first small-diameter barrel reinforcement members 21 and the other axial-direction other side of all the second small-diameter barrel reinforcement members 22. Is directed to the front end side (left side in FIG. 4) of the connecting cylindrical member.

  Further, in the cylindrical member connecting step, the large-diameter trunk portion reinforcing member 23 provided at a position closest to the first conical trunk portion 4 is arranged such that the surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23 is The large-diameter body part 3 and the first conical body part 4 are connected in a state of being directed to the opposite side of the first conical body part 4 (right side in FIG. 4). Similarly, in the cylindrical member connecting step, the large-diameter trunk portion reinforcing member 23 provided at the position closest to the second conical trunk portion 5 is a surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23. Are connected to the opposite side (left side in FIG. 4) of the second cone body 5, and the large-diameter body 3 and the second cone body 5 are connected to each other.

  Next, the wave preventing plate 10 is fixed to the reinforcing member 20 welded to the inner peripheral surface of the connecting cylindrical member formed by the cylindrical member connecting step (wave preventing plate fixing step).

  In this wave-blocking plate fixing step, the wave-blocking plate 10 should be fixed by inserting the wave-blocking plate 10 into the inside of the connecting cylindrical member from the opening on the rear end side (right side in FIG. 4) of the connecting cylindrical member. It is carried to the vicinity of the reinforcing member 20 (the space formed between the reinforcing member 20 to be fixed and the reinforcing member 20 provided on both sides of the reinforcing member 20 in the inside of the tank 100). After the orientation of the wave preventing plate 10 is adjusted (turned so that the longitudinal direction of the wave preventing plate 10 faces the radial direction of the reinforcing member 20), the wave preventing plate 10 is fixed to the reinforcing member 20 to be fixed.

  In the cylindrical member connecting step in the present embodiment, the case where the wave preventing plate 10 is inserted into the connecting cylindrical member from the opening on the rear end side in the axial direction of the connecting cylindrical member will be described. The wave blocking plate 10 may be inserted into the connecting cylindrical member from the opening at the front end side in the axial direction of the member.

  In the cylindrical member connecting step in the present embodiment, first, the first small-diameter body portion wave preventing plate 11 is fixed to the first small-diameter body portion reinforcing member 21 (first small-diameter body portion wave preventing plate fixing step).

  Specifically, the first small-diameter body wave-breaking plate 11 is connected to the space (tank on the front side (right side in FIG. 4) of the first small-diameter body-body reinforcing member 21 to which the first small-diameter body wave-breaking plate 11 is to be fixed. 100, the reinforcing member 20 to be fixed (the first small diameter body reinforcing member 21) and the reinforcing member provided next to the reinforcing member 20 to be fixed on the rear end side in the axial direction of the tank 100 20 (space formed between the first small-diameter body reinforcing member 21 or the first conical body reinforcing member 24) and the direction of the first small-diameter body wave-breaking plate 11 is adjusted in the space. After the first small-diameter body wave-breaking plate 11 is rotated, the first small-diameter body wave-breaking plate 11 is fixed to the first small-diameter body reinforcing member 21 to be fixed by a bolt 30 (see FIG. 2).

  The first small diameter body reinforcing member 21 has a surface facing the other axial direction of the first small diameter body reinforcing member 21 at the rear end side of the connecting cylindrical member, that is, the first small diameter body reinforcing member. Since the first small-diameter body wave breaker plate 11 is fixed to the first small-diameter body reinforcing member 21, the fixing operation is the first small-diameter body reinforcing member 21. This can be done in the space on the near side. Therefore, the surface of the first small-diameter trunk reinforcing member 21 facing the other axial direction is the space on the front end side of the connecting cylindrical member, that is, the back side of the first small-diameter trunk reinforcing member 21 (inside the tank 100). Among them, the reinforcing member 20 (first small diameter body reinforcing member 21) to be fixed and the reinforcing member 20 (first small diameter) provided next to the reinforcing member 20 to be fixed on the front end side in the axial direction of the tank 100. The first small-diameter barrel from the rear end side of the connecting cylindrical member as compared to the space formed between the body reinforcing member 21 or the front end of the connecting cylindrical member) and the left side in FIG. The carry-in distance of the partial breaker plate 11 can be shortened.

  After the first small-diameter body wave breaker fixing step is completed, the first cone body wave breaker 14 is fixed to the first cone body reinforcing member 24 (first cone body wave breaker fixing step).

  Specifically, the first conical trunk portion wave-breaking plate 14 is carried to the space on the near side (right side in FIG. 4) of the first conical trunk portion reinforcing member 24, and the first conical trunk portion wave-breaking plate 14 is placed in that space. The first conical body part wave-breaking plate 14 is fixed to the first conical body part reinforcing member 24 with bolts 30.

  The first cone body reinforcing member 24 has a surface facing the other side in the axial direction of the first cone body reinforcing member 24, that is, the side on which the diameter of the first cone body reinforcing member 24 is expanded, that is, the first cone body portion. Since it is directed to the space on the near side of the reinforcing member 24, when the first conical body portion wave preventing plate 14 is fixed to the first conical body portion reinforcing member 24, the fixing operation is performed to reinforce the first conical body portion. This can be done in the space on the front side of the member 24. Therefore, compared with the case where the surface of the first cone body reinforcing member 24 facing the other side in the axial direction is directed to the space on the back side (left side in FIG. 4) of the first cone body reinforcing member 24, The first conical barrel portion wave-breaking plate 14 from the rear end side of the cylindrical member can be reduced in distance, and the length of the first cone barrel portion 4 in the radial direction can be ensured to be large. Since it is easy to change the direction of the conical body part wave breaker 14 (it is easy to turn), the working efficiency of the first conical body part wave breaker plate fixing process can be improved.

  After the first conical trunk portion wave-blocking step is completed, the large-diameter trunk portion wave-breaking plate 13 is fixed to the large-diameter trunk portion reinforcing member 23 (large-diameter trunk portion wave-breaking plate fixing step).

  Specifically, after the large-diameter trunk portion wave breaking plate 13 is carried into a space near the large-diameter trunk portion reinforcing member 23 and the direction of the large-diameter trunk portion wave breaking plate 13 is adjusted in the space, The body part wave-breaking plate 13 is fixed to the large-diameter body part reinforcing member 23 with bolts 30.

  Here, as shown in FIG. 4, in the present embodiment, the large-diameter trunk portion 3 is provided with three large-diameter trunk portion reinforcing members 23. Among them, the first and second large-diameter trunk reinforcing members 23 counted from the front end side (the left side in FIG. 4) of the connecting cylindrical member are provided at positions sandwiching the manhole member 40.

  As described above, the large-diameter trunk portion reinforcing member 23 provided at a position sandwiching the manhole member 40 has the surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23 facing the manhole member 40.

  The first large-diameter trunk portion reinforcing member 23 counted from the front end side of the connecting cylindrical member has a surface facing the other axial direction of the large-diameter trunk portion reinforcing member 23 in front of the large-diameter trunk portion reinforcing member 23. Since it is directed to the space (right side of FIG. 4), when the large-diameter trunk wave breaker plate 13 is fixed to the first large-diameter trunk reinforcement member 23 as counted from the front end side of the connecting cylindrical member. The fixing work is performed in the space on the front side of the large-diameter trunk portion reinforcing member 23.

  The first large-diameter trunk reinforcing member 23 counted from the front end side of the connecting cylindrical member is the large-diameter trunk reinforcing member 23 provided at the position closest to the first conical trunk 24 and has a large diameter. A space on the back side (left side in FIG. 4) of the trunk portion reinforcing member 23 is formed by the inner circumferential surface of the first conical barrel portion 4 and the inner circumferential surface of the large-diameter barrel portion 3. On the other hand, since the space on the near side of the large-diameter trunk portion reinforcing member 23 is formed only by the inner peripheral surface of the large-diameter trunk portion 3, it has a larger diameter than the space on the back side of the large-diameter trunk portion reinforcing member 23. It is easy to change the direction of the trunk part wave breaker 13 (easy to rotate), and it is possible to improve the working efficiency of the large diameter trunk part wave breaker fixing process.

  On the other hand, the second large-diameter trunk reinforcing member 23 counted from the front end side of the connecting cylindrical member has a surface facing the other axial direction of the large-diameter trunk reinforcing member 23 of the large-diameter trunk reinforcing member 23. Since it is directed to the space on the back side (left side in FIG. 4), the large-diameter trunk portion wave breaker plate 13 is fixed to the second large-diameter trunk portion reinforcing member 23 as counted from the front end side of the connecting cylindrical member. At that time, the fixing operation is performed in the space on the back side of the large-diameter trunk portion reinforcing member 23.

  In addition, about the 2nd large diameter trunk | drum reinforcement member 23, since the space of the back side of the 2nd large diameter trunk | drum reinforcement member 23 is formed only by the internal peripheral surface of the large diameter trunk | drum 3, It is possible to secure a wide space for adjusting the direction of the large-diameter trunk wave breaker plate 13 (turning the large-diameter trunk wave breaker plate 13).

  The third large-diameter trunk portion reinforcing member 23 counted from the front end side of the connecting cylindrical member is the large-diameter trunk portion reinforcing member 23 provided at a position closest to the second conical trunk portion 5, and as described above. The surface of the large-diameter barrel reinforcing member 23 facing the other side in the axial direction is the opposite side of the second conical barrel portion 5 (left side in FIG. 4), that is, to the space on the back side of the large-diameter barrel reinforcing member 23. Is directed. Therefore, when the large-diameter trunk wave breaker plate 13 is fixed to the third large-diameter trunk reinforcing member 23 counted from the front end side of the connecting cylindrical member, the fixing operation is performed with the large-diameter trunk reinforcing member. 23 in the space on the back side.

  The large-diameter trunk portion reinforcing member 23 provided at a position closest to the second conical trunk portion 5 has a space on the near side (right side in FIG. 4) of the large-diameter trunk portion reinforcing member 23 as the inner circumference of the second conical trunk portion 5. It is formed by the surface and the inner peripheral surface of the large-diameter trunk portion 3. On the other hand, the space on the back side (left side in FIG. 4) of the large-diameter trunk portion reinforcing member 23 is formed only by the inner peripheral surface of the large-diameter trunk portion 3. It is easier to change the direction of the large-diameter trunk wave breaker 13 than the space, and the working efficiency of the large-diameter trunk wave breaker fixing process can be improved.

  In FIG. 4, the large-diameter body wave-breaking plate 13 is arranged in the vicinity of the large-diameter body reinforcing member 23 provided at the position closest to the second conical body part 5 (to be rotated). ) The process is schematically illustrated. In FIG. 4, in the space on the near side (right side in FIG. 4) and the back side (left side in FIG. 4) of the large diameter body reinforcing member 23 provided at the position closest to the second conical body part 5, the large diameter body is provided. A state in which the longitudinal direction of the partial wave-breaking plate 13 is directed to the vertical direction (vertical direction in FIG. 4) of the large-diameter barrel portion 3 is illustrated. When adhering to 23, the longitudinal direction of the large-diameter trunk part wave-breaking plate 13 is set to be in a state of being directed in the left-right direction of the large-diameter trunk part 3 (perpendicular to the plane of FIG. 4).

  Here, as described above, the large-diameter trunk portion wave-breaking plate 13 has a length dimension connecting one end portion and the other end portion in the longitudinal direction of the large-diameter trunk portion wave-breaking plate 13. The inner diameter of the first small diameter body 1 and the second small diameter body 2 and the first conical body 4 and a part of the second conical body 5 are set larger.

  On the other hand, it is necessary to provide the wave blocking plate 10 for each fixed volume capable of filling the space formed by the inner peripheral surface of the tank 100 and the two wave blocking plates 10 adjacent to each other. It is not possible to freely set the facing interval of the wave preventing plate 10. Therefore, in the large-diameter body part 3, the inner diameter dimension of the large-diameter body part 3 is longer than that of the first small-diameter body part 1, the second small-diameter body part 2, the first conical body part 4, and the second conical body part 5. Accordingly, the facing distance between two adjacent large-diameter body wave-breaking plates 13 is also reduced.

  Further, in the first conical body part 4 or the second conical body part 5, even if the length dimension for adjusting the orientation of the large-diameter body part wave-breaking plate 13 is ensured by design, the large-diameter body part wave-breaking unit is used. Due to dimensional errors in manufacturing the plate 13 or the like, or interference with a weld bead formed by welding the first conical body portion 4 or the second conical body portion 5 and the reinforcing member 20, the large-diameter body wave-breaking plate 13 You may not be able to change direction. Moreover, even if the dimension for adjusting the orientation of the large-diameter trunk portion wave-breaking plate 13 is ensured, the large-diameter trunk portion wave-breaking plate 13 is arranged in a space formed only by the large-diameter trunk portion 3. Compared to the case, there is not enough space and work efficiency is reduced.

  As described above, in the large-diameter trunk portion 3, the distance between two adjacent wave-proof plates 10 becomes small, while the large-diameter trunk portion wave-breaking plate 13 has a large dimension in the longitudinal direction. Accordingly, at least for the large-diameter trunk reinforcing member 23 provided at the position closest to the first conical trunk section 4, the surface facing the other axial direction of the large-diameter trunk reinforcing member 23 is the first conical trunk. For the large-diameter barrel reinforcing member 23 that is directed to the opposite side of the portion 4 and is provided in the vicinity of the second conical barrel portion 5, the surface facing the other axial direction of the large-diameter barrel reinforcing member 23 Since the direction of the large-diameter trunk portion wave breaker plate 13 can be easily adjusted by facing the second conical trunk portion 5, the working efficiency of the large-diameter trunk portion wave breaker fixing step can be improved.

  In the present embodiment, three large-diameter trunk reinforcing members 23 are provided in the large-diameter trunk 3, but four or more large-diameter trunk reinforcing members 23 are provided in the large-diameter trunk 3. Among the four or more large-diameter body reinforcing members 23, the large-diameter body reinforcing member 23 and the manhole member 40 that are provided closest to the first conical body portion 4 and the second conical body portion 5. With respect to the large-diameter trunk portion reinforcing member 23 except for the large-diameter trunk portion reinforcing member 23 provided at a position sandwiching the rim, the surface of the large-diameter trunk portion reinforcing member 23 facing the other side in the axial center direction is connected to the cylindrical member. It is desirable to face the rear end side. Thereby, compared with the case where the surface which faces the axial direction other side of the large diameter trunk | drum reinforcement member 23 is orient | assigned to the front-end side of a connection cylindrical member, it is large which should adhere from the rear-end side of a connection cylindrical member. It is possible to shorten the carry-in distance of the large-diameter trunk portion wave breaker 13 up to the radial trunk portion reinforcing member 23.

  After the large-diameter body wave-blocking plate fixing step is completed, the second cone-body wave-breaking plate 15 (see FIG. 3) is fixed to the second cone-body wave-reinforcing member 25 (second cone-body wave-blocking plate fixing). Process).

  Specifically, the second conical body portion wave breaker plate 15 is carried into a space on the back side (left side in FIG. 4) of the second conical body portion reinforcing member 25, and the second conical body portion wave breaker plate 15 is used in that space. After adjusting the direction of (the second conical body portion wave breaker plate 15 is turned), the second conical body portion wave breaker plate 15 is fixed to the second conical body portion reinforcing member 25 with a bolt 30.

  The second conical trunk portion reinforcing member 25 has a surface facing the other axial direction of the second conical trunk portion reinforcing member 25, that is, the side on which the diameter of the second conical trunk portion reinforcing member 25 is increased, that is, the second conical trunk portion. Since it is directed to the space on the back side of the reinforcing member 25, when the second conical body wave-breaking plate 15 is fixed to the second conical body reinforcing member 25, the fixing operation is performed to reinforce the second conical body part. This can be done in the space behind the member 25. Therefore, compared with the case where the surface facing the other axial direction of the second cone body reinforcing member 25 is directed to the space on the near side (right side in FIG. 4) of the second cone body reinforcing member 25, Since it is possible to easily change the direction of the second conical body portion wave-breaking plate 15 (to be easily turned), the second conical body portion can be prevented from breaking. The working efficiency of the plate fixing process can be improved.

  After the second conical body part wave-blocking plate fixing step is completed, the second small-diameter body wave-breaking plate 12 (see FIG. 3) is fixed to the second small-diameter body part reinforcing member 22 (second small-diameter body wave-breaking plate). Fixing process).

  Specifically, the second small-diameter body wave breaker 12 is carried into the space on the near side (right side in FIG. 4) of the second small-diameter body reinforcing member 22 to which the second small-diameter body wave breaker 12 is to be fixed. Then, after the direction of the second small-diameter trunk wave breaker 12 is adjusted in the space (the second small-diameter trunk wave breaker 12 is turned), the second small-diameter trunk wave breaker 12 is to be fixed. 2 The bolt 30 is fixed to the small-diameter trunk reinforcing member 22.

  The second small-diameter body reinforcing member 22 has a surface facing the other axial direction of the second small-diameter body reinforcing member 22 on the rear end side of the connecting cylindrical member, that is, the second small-diameter body reinforcing member 22. Since it is directed to the space on the near side, when the second small-diameter trunk wave preventing plate 12 is fixed to the second small-diameter trunk reinforcing member 22, the fixing operation is performed in front of the second small-diameter trunk reinforcing member 22. Can be done in the side space. Accordingly, it is possible to shorten the carry-in distance of the second small-diameter trunk wave preventing plate 12 from the rear end side of the connecting cylindrical member.

  For the first conical body reinforcing member 24, the large diameter body reinforcing member 23 and the second conical body reinforcing member 25, the first conical body wave preventing plate 14 and the large diameter body portion wave preventing plate 13 are used. And the 2nd cone body part wave-proof board 15 is provided 2 sheets each. In order to suppress the fluctuation of the liquid level of the filling in the tank 100, the first conical body wave-breaking plate is increased by the increase in the inner diameters of the first conical body part 4, the large-diameter body part 3 and the second conical body part 5. 14, where the large-diameter body wave-breaking plate 13 and the second conical body wave-breaking plate 15 need to be enlarged, the first conical-body wave-breaking plate 14, the large-diameter body wave-breaking plate 13 and the second By dividing the conical body portion wave breaker plate 15 into two pieces, the weight per piece can be suppressed. Thereby, it is easy to perform turning when carrying in and adjusting the orientation of the first conical body wave-breaking plate 14, the large-diameter body wave-breaking plate 13, and the second conical body wave-breaking plate 15 inside the connecting cylindrical member. can do.

  Next, the tank 100 is formed by welding the end plate 6 to the other axial end of the connecting cylindrical member to which the wave preventing plate 10 is fixed in the wave preventing plate fixing step (second end plate welding step).

  In this end plate welding process, the welding operation is performed from both the inner peripheral surface side and the outer peripheral surface side of the tank 100. Therefore, when performing the welding operation on the inner peripheral surface side of the tank 100, the operator who possesses the welding tool Enters the inner peripheral surface side of the tank 100 from the opening formed in the tube seat 40a of the manhole member 40, and performs a welding operation on the other end side of the connecting cylindrical member, that is, inside the second small-diameter body 2.

  Compared to the large-diameter body 3, the second small-diameter body 2 can ensure a large gap between the two adjacent wave-proof plates 10, so that it is easy to secure a work space when welding the end plate 6. .

  In the present embodiment, the end plate 6 is welded to the other axial end of the connecting cylindrical member in the second end plate welding step, but the portion constituting the second small diameter body portion 2 in the first end plate welding step. When the end plate 6 is welded to the one cylindrical member, the end plate 6 is welded to one end in the axial center direction of the connecting cylindrical member, that is, the first small-diameter body portion 1 in the second mirror welding step.

  As described above, the present invention has been described based on the embodiments, but the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

  For example, the numbers of the wave preventing plates 10 and the reinforcing members 20 provided in the tank 100 are only examples, and other numbers can naturally be used.

  In the above embodiment, the present invention relates to the first small-diameter body part 1, the second small-diameter body part 2, the large-diameter body part 3, the first conical body part 4, the second conical body part 5, and the end plate. However, the present invention is not necessarily limited to this. For a cylindrical tank in which the diameter illustrated in the tank 500 shown in FIG. You may apply. Thereby, the rigidity with respect to the radial deformation of the tank 500 can be increased uniformly with respect to the circumferential direction of the tank 500.

  In the above embodiment, the case where all the wave preventing plates 10 are fixed to the annular reinforcing member 20 has been described. However, the invention is not necessarily limited to this, and the annular reinforcing member 20 is not necessarily limited to the tank 100. Instead of this, an arc-shaped fixing member 520 shown in FIG. 5 may be used, and the wave preventing plate 10 may be fixed to the fixing member 520. Since the fixing member 520 is formed in an arc shape, the tank 100 can be reduced in weight by being used instead of the arc-shaped reinforcing member 20.

  In the first small-diameter body 1 and the second small-diameter body 2, the portion where the fixing member 520 is not welded, that is, the fixing member 520 is welded because the inner diameter is reduced. It is possible to reduce the length in the circumferential direction of the portion whose rigidity is lower than that of the portion. Further, when the tank semi-trailer is pulled by a towing vehicle (not shown), the first small-diameter body portion 1 of the tank 100 is inclined upward from the second small-diameter body portion 2, and the tank 100 is filled. The pressure acting on the first small-diameter body wave breaker plate 11 is smaller than that of the second small-diameter body part 2 due to the liquid level fluctuation of the filled material. Therefore, even when the fixing member 520 is used instead of a part of the first small-diameter trunk portion reinforcing member 21, it is easy to avoid dropping from the fixing member 520 from the first small-diameter trunk portion wave preventing plate 11. be able to.

  In the above embodiment, the case where the manhole member attaching process is performed before the reinforcing member welding process has been described. However, the present invention is not necessarily limited to this, and the manhole member attaching process is performed after the reinforcing member welding process. May be. In this case, the manhole member 40 is attached to the manhole member 40 side by directing the surface facing the other axial direction of the large-diameter trunk reinforcing member 23 provided at a position sandwiching the manhole member 40 toward the manhole member 40. It is possible to avoid obstruction by the radially inner end of the protruding large-diameter trunk reinforcing member 23. Therefore, the work efficiency when attaching the manhole member 40 can be improved.

  In the above embodiment, the case where the first end plate welding process is performed before the manhole member attaching step has been described. However, the present invention is not necessarily limited to this, and the first end plate welding step is performed simultaneously with the manhole member attaching step. Or you may perform after a manhole member attachment process.

In the above embodiment, the case where the first end plate welding process is performed before the second end plate welding process has been described. However, the present invention is not necessarily limited to this, and the first end plate welding process is performed simultaneously with the second end plate welding process. It may be done.
<Others>
<Means>
The tank semi-trailer of the technical idea 1 is provided with a tank filled with a liquid filling in a high pressure state, and the tank is disposed inside the tank and spaced from the tank at a predetermined interval. And a plurality of reinforcing members to which the wave preventing plates are fixed and welded to the inner peripheral surface of the tank. It is formed in an annular shape set to an outer diameter corresponding to the inner diameter of the tank, and the cross-sectional shape along the axial direction of the reinforcing member is substantially L-shaped with the radially inner side bent to one axial direction side. Formed, the radially outer end of the reinforcing member is welded over the entire inner peripheral surface of the tank, and the wave preventing plate is fixed to the surface of the reinforcing member facing the other axial direction. Yes.
A tank semi-trailer according to technical idea 2 is the tank semi-trailer according to technical idea 1, wherein the tank is formed in a cylindrical shape and is located on the front end side and the rear end side of the tank. And a large diameter formed between the first small diameter body and the second small diameter body and having a larger diameter than the diameter of the first small diameter body and the second small diameter body A body part, the first small diameter body part and the large diameter body part are concentrically connected to each other, and the first cone body part formed in a conical shape is concentric with the second small diameter body part and the large diameter body part. A second conical body portion connected to the top and formed in a conical shape, wherein the plurality of reinforcing members include a plurality of large diameter body reinforcing members welded to an inner peripheral surface of the large diameter body portion. The plurality of wave preventing plates are fixed to the large-diameter trunk reinforcing member. A large-diameter body wave-breaking plate is provided, and the large-diameter body wave-breaking plate has a length dimension in a direction connecting one end side and the other end side fixed to the large-diameter trunk-body reinforcing member. The large-diameter trunk portion reinforcing member that is set larger than the inner diameter of the reinforcing member and is provided at a position closest to the first conical trunk portion among the plurality of large-diameter trunk portion reinforcing members is the large-diameter trunk portion reinforcement. A surface of the member facing the other side in the axial direction is directed to the opposite side of the first conical body portion, and is provided at a position closest to the second conical body portion among the plurality of large diameter body reinforcing members. The large diameter body reinforcing member has a surface facing the other side in the axial direction of the large diameter body reinforcing member directed to the opposite side of the second conical body.
A tank semi-trailer according to technical idea 3 is the tank semi-trailer according to technical idea 2, wherein the plurality of reinforcing members are a first cone welded to an inner peripheral surface of the first cone body part or the second cone body part. A first conical body portion fixing member fixed to the first conical body portion reinforcing member or the second conical body portion reinforcing member; A corrugated plate and a second conical body portion wave preventing plate, and the length dimension in a direction connecting one end side and the other end side of the first conical body portion wave preventing plate and the second conical body portion wave preventing plate is The first conical body portion wave blocking plate and the second conical body portion wave preventing plate are set to be larger than the inner diameters of the first conical body portion reinforcing member and the second conical body portion reinforcing member, and the first cone The trunk portion reinforcing member has a large diameter surface facing the other axial direction of the first conical trunk portion reinforcing member. Together is directed to section side, the second conical barrel reinforcing member, the surface facing the axial direction other side of the second conical barrel reinforcing member is directed to the large径胴side.
The tank semi-trailer of the technical idea 4 is the tank semi-trailer according to the technical idea 2 or 3, wherein the tank includes a manhole member that communicates the inside and the outside of the tank, and the manhole member has a large diameter of the tank. It is attached below the trunk.
A tank semi-trailer according to technical idea 5 is the tank semi-trailer according to technical idea 4, wherein the manhole member includes a tube seat arranged to protrude toward the inner peripheral surface side of the large-diameter trunk, and the plurality of large-diameters are provided. In the two reinforcing members provided at positions sandwiching the tube seat among the trunk portion reinforcing members, the surfaces of the two reinforcing members facing the other axial direction are directed to the tube seat.
<Effect>
According to the tank semi-trailer described in the technical idea 1, the reinforcing member is formed in an annular shape having an outer diameter corresponding to the inner diameter of the tank, and the radially outer end of the reinforcing member is the inner peripheral surface of the tank. Since it is welded over the entire circumference, the rigidity against deformation in the radial direction of the tank can be increased uniformly in the circumferential direction of the tank.
In addition, since the reinforcing member has a substantially L-shaped cross section, the rigidity against deformation of the reinforcing member (for example, the radial direction or the twist direction of the reinforcing member) can be increased.
Therefore, even when the inside of the tank is filled with a high-pressure state, deformation of the tank and the reinforcing member in the radial direction can be suppressed, so that the cross-sectional shape perpendicular to the axial direction of the tank is deformed. As a result, it is possible to prevent the breaker plate from falling off due to deformation of the tank.
According to the tank semi-trailer described in the technical idea 2, in addition to the effect produced by the tank semi-trailer described in the technical idea 1, the wave-breaking plate against the large-diameter body reinforcing member provided at the position closest to the first conical body part is provided. There is an effect that it is possible to secure a wide working space for fixing.
That is, for example, after the first small diameter body, the second small diameter body, the large diameter body, the first conical body, and the second conical body are integrally formed with the reinforcing member welded to the inner peripheral surface. The wave-proof plate is carried into the tank from the axial direction end side of the second small-diameter body portion that opens, and the wave-proof plate is fixed to the reinforcing member, and the axial-direction end portion of the second small-diameter body portion that opens. In the case of manufacturing a tank by closing the side, the large-diameter body wave breaker plate has a length dimension in the direction connecting the one end side and the other end side fixed to the large-diameter body reinforcement member. Since the size is set to be larger than the inner diameter of the trunk reinforcement member, the large-diameter trunk wave-breaking plate is brought into the large-diameter trunk section in a tilted state, and the large-diameter trunk wave-breaking plate is fixed. Rotate the large-diameter body wave breaker in the vicinity of the large-diameter body reinforcement member so that the direction connecting the one end side and the other end side of the large-diameter body wave breaker faces the radial direction of the large-diameter trunk part Let After securing the large径胴portion reinforcing member to be secured to the large-径胴part explosion wave plate.
Here, among the spaces formed on both sides in the axial direction of the large-diameter trunk reinforcing member provided at the position closest to the first conical trunk, the large-diameter trunk wave-breaking plate is inserted from the second small-diameter trunk side. The space formed on the back side of the large-diameter trunk reinforcing member (the first conical trunk side with respect to the large-diameter trunk reinforcing member) when carried in is the inner circumferential surface of the large-diameter trunk and the first conical cylinder. The space formed on the front side of the large-diameter trunk reinforcing member (on the opposite side of the first conical trunk portion with respect to the large-diameter trunk reinforcing member) It is formed only by the inner peripheral surface of the diameter barrel portion. That is, in the space formed on the opposite side of the first cone body, the large-diameter body wave-breaking plate interferes with the first cone body in advance compared to the space formed on the first cone body side. As much as possible, the large-diameter body wave breaker can be easily turned.
In this regard, the large-diameter barrel reinforcing member provided at a position closest to the first conical barrel portion has a surface facing the other axial direction of the large-diameter barrel reinforcing member on the opposite side of the first conical barrel portion. The large-diameter body wave-breaking plate carried in from the second small-diameter body part side is turned in the space formed on the opposite side of the first conical body part, and then the large-diameter body wave-breaking part The plate can be fixed to the large-diameter trunk reinforcing member to be fixed.
At this time, the large-diameter body wave breaker fixed to the large-diameter body reinforcing member provided at the position closest to the first conical body part is provided at the position closest to the first conical body part. Since it is only necessary to carry in to the front side of the large-diameter trunk reinforcing member, the distance to carry the wave-proof plate in the large-diameter trunk as compared with the case of bringing the wave-proof board into the deep side of the large-diameter trunk reinforcing member. Therefore, the working efficiency of welding the large-diameter body wave-breaking plate to the large-diameter body reinforcing member can be improved.
Similarly, the large-diameter trunk portion reinforcing member provided at the position closest to the second conical trunk portion is the second small-diameter trunk portion side of the space formed on both axial sides of the large-diameter trunk portion reinforcing member. The space formed on the back side of the large-diameter trunk reinforcing member when it is carried in from the side (the opposite side of the second conical trunk portion with respect to the large-diameter trunk reinforcing member) is only by the inner peripheral surface of the large-diameter trunk portion. The space formed on the front side of the large-diameter trunk reinforcing member (the second conical trunk side with respect to the large-diameter trunk reinforcing member) is formed on the inner peripheral surface of the large-diameter trunk. It is formed with the internal peripheral surface of the 1st cone body part. That is, in the space formed on the opposite side of the second cone body portion with respect to the large diameter body reinforcement member, the large diameter body wave breaker plate is second in comparison with the space formed on the second cone body side. Since the interference with the conical barrel portion can be avoided in advance, the large-diameter barrel portion wave breaker can be easily turned.
In this regard, the large-diameter barrel reinforcement member provided at the position closest to the second cone barrel portion has a surface facing the other axial direction of the large-diameter barrel reinforcement member opposite to the second cone barrel portion. The large-diameter body wave-breaking plate carried from the second small-diameter body part side is turned in the space formed on the opposite side of the second conical body part, and then the large-diameter body wave-breaking part The plate can be fixed to the large-diameter trunk reinforcing member.
As described above, when the large-diameter body reinforcing plate is fixed to the large-diameter body reinforcing member provided at the position closest to the first conical body section or the second conical body section, Since the large-diameter trunk wave breaker can be fixed to the large-diameter trunk reinforcing member after the large-diameter trunk wave-breaking plate is turned in the space formed by the peripheral surface alone, The working efficiency of fixing the corrugated plate to the large-diameter trunk reinforcing member can be improved.
The first small diameter body, the second small diameter body, the large diameter body, the first conical body, and the second conical body, which are integrally welded with the reinforcing member, are opened and then opened. Even when the wave preventing plate is carried into the tank from the axial end side of the body portion, the same effect as described above can be obtained.
According to the tank semi-trailer described in the technical idea 3, in addition to the effects produced by the tank semi-trailer described in the technical idea 2, one end side and the other end side of the first conical trunk part wave-breaking plate and the second conical trunk part wave-breaking plate Is longer than the inner diameter of the first cone body reinforcing member and the second cone body reinforcing member to which the first cone body wave preventing plate and the second cone body wave preventing plate are to be fixed. And the surface facing the other axial direction of the first cone body reinforcing member is directed toward the large diameter body portion, so that the first cone body wave breaker plate with respect to the first cone body reinforcement member There is an effect that it is possible to secure a wide working space for fixing. Similarly, since the surface facing the other axial direction of the second cone body reinforcing member is directed to the large-diameter body portion, the second cone body wave-breaking plate is fixed to the second cone body reinforcing member. There is an effect that it is possible to secure a wide working space when performing the operation.
According to the tank semi-trailer described in the technical idea 4, in addition to the effects produced by the tank semi-trailer described in the technical idea 2 or 3, the manhole member that communicates the inside and the outside of the tank is provided below the large-diameter body of the tank. Since it is attached, the manhole member, which is a heavy object, can be disposed at a lower position in the height direction of the tank. Therefore, the center of gravity of the tank can be lowered, and as a result, the running stability of the tank semi-trailer can be ensured.
According to the tank semi-trailer described in the technical idea 5, in addition to the effect produced by the tank semi-trailer described in the technical idea 4, the two reinforcing members provided at the positions sandwiching the manhole member are arranged on the other side in the axial direction. Since the facing surface is directed to the manhole member, the inner circumference of the large-diameter trunk is larger than the case where one side in the axial direction where the radially inner side of the large-diameter trunk reinforcement is bent is directed to the manhole member. It is possible to avoid that the welding operation of the radially outer end portion of the large-diameter trunk reinforcing member with respect to the surface is obstructed by the radially inner portion bent toward one axial direction of the large-diameter trunk reinforcing member. Therefore, there is an effect that it is possible to improve the working efficiency when welding the radially outer end of the large-diameter trunk reinforcing member to the inner peripheral surface of the large-diameter trunk.

DESCRIPTION OF SYMBOLS 100 Tank 1 1st small diameter trunk | drum 2 2nd small diameter trunk | drum 3 Large diameter trunk | drum 4 1st cone trunk | drum 5 2nd cone trunk | drum 10 Wave-proof board 13 Large-diameter trunk | drum wave-proof board 14 1st cone trunk | drum prevention Corrugated plate 15 Second conical trunk portion breaker plate 20 Reinforcing member 23 Large diameter trunk portion reinforcing member 24 First conical trunk portion reinforcing member 25 Second conical trunk portion reinforcing member 40 Manhole member 41 Tube seat

Claims (5)

In a tank semi-trailer equipped with a tank filled with a liquid filling under high pressure,
The tank is disposed inside the tank and arranged in parallel along the axial direction of the tank with a predetermined interval therebetween, and the tank is fixed to the tank and the tank A plurality of reinforcing members welded to the peripheral surface,
The plurality of reinforcing members are formed in an annular shape set to an outer diameter corresponding to the inner diameter of the tank, and the cross-sectional shape along the axial direction of the reinforcing member has a radially inner side toward the axial center side. It is formed in a bent substantially L-shape, and the end portion on the radially outer side of the reinforcing member is welded over the entire inner peripheral surface of the tank, and on the surface facing the other axial direction of the reinforcing member A tank semi-trailer, wherein the wave preventing plate is fixed. The tank is formed in a cylindrical shape between a first small diameter body portion and a second small diameter body portion located on the front end side and the rear end side of the tank, and between the first small diameter body portion and the second small diameter body portion. A large-diameter body portion that is positioned and formed in a cylindrical shape having a diameter larger than the diameters of the first small-diameter body portion and the second small-diameter body portion, and the first small-diameter body portion and the large-diameter body portion are concentric. A first conical body portion formed in a conical shape, and a second conical body portion concentrically connecting the second small diameter body portion and the large diameter body portion, and a conical shape. Prepared,
The plurality of reinforcing members include a plurality of large-diameter trunk part reinforcing members welded to the inner peripheral surface of the large-diameter trunk part,
The plurality of wave preventing plates each include a large diameter body wave preventing plate fixed to the large diameter body reinforcing member, and one end of the large diameter body wave preventing plate fixed to the large diameter body reinforcing member. The length dimension in the direction connecting the side and the other end side is set larger than the inner diameter of the large-diameter trunk reinforcing member,
Of the plurality of large-diameter body reinforcement members, the large-diameter body reinforcement member provided at a position closest to the first conical body part is a surface facing the other axial direction of the large-diameter body reinforcement member. Is directed to the opposite side of the first conical body part, and the large diameter body reinforcing member provided at a position closest to the second conical body part among the plurality of large diameter body reinforcing members is 2. The tank semi-trailer according to claim 1, wherein a surface of the large-diameter barrel reinforcing member facing the other side in the axial direction is directed to the opposite side of the second conical barrel portion. The plurality of reinforcement members include a first cone body reinforcement member and a second cone body reinforcement member welded to an inner peripheral surface of the first cone body part or the second cone body part,
The plurality of wave breakers include a first cone body breaker plate and a second cone body breaker plate fixed to the first cone body reinforcement member or the second cone body reinforcement member, A length dimension in a direction connecting one end side and the other end side of the first conical body portion wave preventing plate and the second conical body portion wave preventing plate is such that the first conical body portion wave preventing plate and the second conical body portion wave preventing plate. Set to be larger than the inner diameters of the first cone body reinforcing member and the second cone body reinforcing member to which the wave preventing plate is to be fixed;
The first conical trunk portion reinforcing member has a surface facing the other axial direction of the first conical trunk portion reinforcing member directed toward the large diameter trunk portion, and the second conical trunk portion reinforcing member includes 3. The tank semi-trailer according to claim 2, wherein a surface of the second conical barrel reinforcing member facing the other side in the axial direction is directed to the large-diameter barrel portion.   The said tank is provided with the manhole member which connects the inside and the exterior of the tank, and the manhole member is attached below the large diameter trunk | drum of the said tank. Tank semi-trailer. The manhole member includes a tube seat arranged to protrude to the inner peripheral surface side of the large-diameter trunk,
Among the plurality of large-diameter body reinforcing members, the two reinforcing members provided at positions sandwiching the tube seat are such that the surfaces of the two reinforcing members facing the other axial direction are directed to the tube seat. The tank semi-trailer according to claim 4, wherein the tank semi-trailer is provided.

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