JP2008121814A - Connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple and compact connection structure capable of facilitating connection of a first member and a second member or release of the connection. <P>SOLUTION: A stopper is provided on the first member or a second member, and when a clamp ring 6 is relaxed so as to release connection of the first member and the second member, the stopper is abutted on both of adjacent ring constitution members 61, 63 of which a distance between them is enlarged by an expansion/contraction means 11. The distance between the adjacent ring constitution members 61, 63 is further enlarged by the expansion/contraction means 11 from the state, thereby, the clamp ring 6 is position-deviated to a side opposed to the connection portion P1 connected by the expansion/contraction means 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is arranged around the overlapping flange portion formed by overlapping the flange portions of the first member and the second member each having a flange portion extending outward over the entire outer periphery. The present invention relates to a connection structure in which an annular clamp ring is tightened to connect the first member and the second member, and the clamp ring is loosened to release the connection between the first member and the second member. At the opening end of the filtration drying device main body of the drying device, the flange portion extending outward and the flange portion extending outward at the outer peripheral portion of the lower lid portion, or the opening end of the container body of the pressure vessel The flange portion extending outward and the flange portion extending outward on the outer peripheral portion of the mirror cover, or the flange portions extending radially outward at the ends of each pair of pipes are overlapped. Combined, each of which is connected or disconnected About the structure.

  Conventionally, as this type of connecting structure, for example, a filtration drying apparatus, each of which has a plurality of concave and convex flange portions formed by projecting outwardly in the radial direction at a predetermined interval and over the entire circumference. The flange portion of the filtration drying device main body as the first member and the lower lid portion as the second member is overlapped to form a superposed flange portion, and the convex portion protruding radially inward is predetermined. An annular clamp ring having a plurality of concave and convex inner portions arranged around the entire circumference at intervals is disposed around the overlapping flange portion, and the clamp ring is rotated in the circumferential direction thereof to filter and dry the apparatus. There is known one that connects or disconnects a main body and a lower lid.

  Such a connecting structure is formed by rotating the clamp ring in the circumferential direction so that the convex portion of the overlapping flange portion and the convex portion of the clamp ring are engaged with each other, thereby tightening the overlapping flange portion and While the lid can be connected, the connection can be released by rotating the clamp ring in the circumferential direction so as to release the engagement (see Patent Document 1 below). .

  However, in such a connection structure, in order to make the tightening by the clamp ring uniform, the superposed flange portion and the convex portion of the clamp ring must be so-called rubbed, which only requires labor for assembly work. In addition, since skill is also required, it has been a complicated task to connect or disconnect the filtration drying apparatus main body and the lower lid.

  In addition, since this connecting structure requires the accuracy of engagement between the convex portion of the overlapping flange portion and the convex portion of the clamp ring, the processing of the flange portion of the filtration drying apparatus main body and the lower lid portion and the clamping ring The processing of the convex portion was complicated.

  Furthermore, the convex part of the flange part of both the filtration drying apparatus main body and the lower lid part and the convex part of the clamp ring are arranged at a predetermined interval, in other words, both the flange part and the clamp ring. Has a notch formed at every predetermined interval, and the notch is aligned with each other in a state in which the filter drying apparatus main body and the lower lid portion are connected (the respective convex portions overlap each other). . Then, since the notch cannot bear a load such as pressure, the connecting structure is enlarged to ensure strength.

  On the other hand, as another connection structure, for example, each flange portion of a container body as a first member of a pressure vessel and a mirror lid as a second member each having a flange portion extending outwardly over the entire outer periphery. A connection structure is known in which an annular clamp ring arranged around the overlapping flange portion formed by overlapping is tightened to connect the container body and the mirror lid, and the clamp ring is loosened to release the connection. Yes.

  The clamp ring having such a connection structure is formed by connecting three ring constituent members in a ring shape, and one of the connecting portions of the ring constituent members is formed by reducing the distance between adjacent ring constituent members. The clamp ring is fastened and connected by expansion / contraction means that loosens the clamp ring by increasing the distance between the adjacent ring constituent members, and the other connecting portions are configured such that the ring constituent member is radially inward or outward of the clamp ring. They are connected by hinges so that they can rotate.

  Further, in this connection structure, as a link mechanism, an arm link whose one end is pivotally supported by either the container body or the mirror lid and whose other end is pivotally supported coaxially by the hinge is provided. A first stopper for restricting the rotation of the arm link is fixed to either the container main body or the mirror lid to which one end of the arm link is attached. Furthermore, the 2nd stopper for preventing that the distance between the said adjacent ring structural members connected with the expansion / contraction means becomes large too much is being fixed to either the container main body or the mirror cover.

  In this connection structure, when the connection between the container body and the mirror lid is released from the state where the container body and the mirror cover are connected by tightening the clamp ring, the connection structure is connected via expansion / contraction means to loosen the clamp ring. When the distance between the matching ring constituent members is widened by the expansion / contraction means, the adjacent ring constituent members rotate respectively outward in the radial direction of the clamp ring with the other end of the arm link as the center of rotation. The link rotates to the side of the clamp ring opposite to the side connected by the expansion / contraction means with one end thereof as the center of rotation. Then, the hinge moves to the side of the clamp ring that faces the side connected by the expansion / contraction means, so the clamp ring is displaced to the side of the clamp ring that faces the side connected by the expansion / contraction means. It will be.

At the same time as the arm link comes into contact with the first stopper and its rotation is restricted, the adjacent ring constituent member comes into contact with the second stopper and its rotation is restricted, so that the clamp ring extends over the entire circumference. (See Patent Document 2 below).
Japanese Patent No. 3130231 Japanese Patent No. 3798986

  However, in the above-described conventional connection structure, the link mechanism must be configured so that the clamp ring is uniformly tightened or loosened over the entire circumference, so that the structure is not only complicated but also increases in size. There was a problem.

  Therefore, the present invention has been made in view of the above-described conventional problems, and has a simple and compact connection structure. Further, the clamp ring in a tightened state can be easily tightened or loosened over the entire circumference. It is an object of the present invention to provide a connection structure that can easily connect or release the connection between the first member and the second member.

  The present invention has been made to solve the above problems, and the connection structure according to the present invention includes a first member and a second member each having a flange portion extending outward over the entire outer periphery. The first member and the second member are connected by tightening an annular clamp ring disposed around the overlapping flange portion formed by overlapping the flange portions, and the first ring and the second member are loosened by loosening the clamp ring. The clamp ring is configured to release the connection with two members, and the clamp ring is formed by connecting a plurality of ring constituent members in a ring shape, and one of the connection parts of the ring constituent members is an adjacent ring constituent member. In the connection structure connected by expansion / contraction means that tightens the clamp ring by reducing the distance between and loosens the clamp ring by widening the distance between the adjacent ring components, The one member or the second member is provided with a stopper, and when the clamp ring is loosened to release the connection between the first member and the second member, the distance between them is increased by the expansion / contraction means. The side opposite to the connecting portion connected by the expansion / contraction means by abutting both adjacent ring constituent members and further expanding the distance between the adjacent ring constituent members from the state by the expansion / contraction means. It is characterized in that the clamp ring is displaced.

  In the connection structure of this configuration, when the clamp ring is loosened to release the connection between the first member and the second member, the first member or the second member has a distance between them by the expansion / contraction means. Abutting on both of the adjacent ring constituent members to be expanded, and further expanding the distance between the adjacent ring constituent members from the state by the expansion / contraction means, the connecting portion connected by the expansion / contraction means Since the stopper for shifting the position of the clamp ring to the opposite side is provided, a conventional link mechanism or the like is not required, and a simple and compact connection structure can be obtained.

  Further, when releasing the connection between the first member and the second member from the state in which the clamp member is fastened and the first member and the second member are connected, they are adjacently connected via expansion / contraction means to loosen the clamp ring. When the distance between the ring constituent members is increased by the expansion / contraction means, the region corresponding to the adjacent ring constituent member in the clamp ring is loosened. And if the distance between the said adjacent ring structural members spreads until it becomes predetermined distance, both the said adjacent ring structural members will contact | abut to a stopper.

  Here, in the portion where the adjacent ring constituent member and the stopper are in contact with each other, the distance does not increase any further, so that the adjacent ring constituent member and the stopper remain in contact with the expansion / contraction means. In order to further increase the distance, the distance between the adjacent ring constituent members increases while the position of the clamp ring is shifted to the side facing the connecting portion connected by the expansion / contraction means. If it does so, the side which opposes the connection part connected by the expansion / contraction means among clamp rings will be loosened by the said position shift of a clamp ring.

  On the other hand, when connecting the first member and the second member from the state where the connection between the first member and the second member is released, the distance between the adjacent ring constituent members is reduced by the expansion / contraction means. The clamp ring can be tightened.

  In particular, the clamp ring is preferably formed by annularly connecting three ring constituent members. Compared to the case where the clamp ring is constituted by two ring constituent members, the adjacent ring constituent members are arranged. There is an advantage that the clamp ring in the tightened state can be loosened even if the distance between them is small, and the clamp ring is smoother than when the clamp ring is composed of four or more ring components. There is an advantage that it is displaced.

  Furthermore, a pair of the stoppers are arranged so as to correspond to each of the adjacent ring constituent members, and with respect to a center line passing through the connecting portion connected by the expansion / contraction means and the center portion of the clamp ring, It is preferable that one stopper is provided at an angle of 20 to 80 ° and the other stopper is provided at an angle of 280 to 340 °, and there is an advantage that the clamp ring is displaced smoothly.

  The closer the stopper is provided to the center line, the more easily the force for shifting the clamp ring is generated, but the stopper is provided at an angle of 20 ° or less (or 340 ° or more) with respect to the center line. Then, it becomes difficult to sufficiently open the clamp ring. Conversely, as the stopper is provided farther from the center line, the force for shifting the clamp ring is less likely to occur, so the stopper is at an angle of 80 ° or more (or 280 ° or less) with respect to the center line. If it is provided, a force for shifting the position of the clamp ring is hardly generated, and it is difficult to position the clamp ring.

  In addition, it is preferable that a pair of the stoppers are arranged so as to correspond to the adjacent ring constituent members, and correspond to the positions in the center in the circumferential direction of the respective ring constituent members. By arranging a pair of stoppers, the connecting structure can be made more compact than when the stoppers are integrally formed over both adjacent ring components, for example, and the stoppers are arranged adjacent to each other. There exists an advantage that a clamp ring shifts | deviates smoothly by arrange | positioning corresponding to the position of the substantially circumferential center of a member.

  Further, the clamp ring is configured by annularly connecting three or more ring constituent members, and the first member or the second member includes at least one ring constituent member other than the adjacent ring constituent members. Preferably, guide means for guiding the displacement of the clamp ring is provided so as to correspond to the above. By doing so, the clamp ring is more reliably displaced to the side facing the connecting portion that is guided by the guide means and connected by the expansion / contraction means, so that the clamp ring can be tightened evenly. There is.

  Furthermore, it is preferable that the first member or the second member is provided with an urging means for urging the clamp ring toward the connecting portion connected by the expansion / contraction means. In this manner, when the clamp ring is tightened to connect the first member and the second member from the state where the clamp ring is loosened and the connection between the first member and the second member is released, the expansion / contraction means The clamp ring can be displaced to the connecting portion connected by the expansion / contraction means by urging the urging means while the distance between the adjacent ring constituent members is reduced by It can be made uniform over the circumference.

  As described above, in the connection structure according to the present invention, when the clamp ring is loosened so as to release the connection between the first member and the second member, The connection between the adjacent ring constituent members that are expanded by the expansion / contraction means is abutted against both of the adjacent ring constituent members that are widened, and the distance between the adjacent ring constituent members is further expanded from the state by the expansion / contraction means. Since the stopper for shifting the position of the clamp ring to the side facing the portion is provided, for example, a simple and compact connection structure can be achieved without the need for providing a link mechanism or the like as in the prior art. Further, the distance between adjacent ring constituent members connected via the expansion / contraction means is widened by the expansion / contraction means, and the clamp ring is further moved to the side of the clamp ring that is connected by the expansion / contraction means. Since it can be displaced, the clamp ring in a clamped state can be easily loosened over its entire circumference, and the distance between the adjacent ring constituent members can be reduced by the expansion / contraction means to reduce the clamp ring to its entire circumference. Thus, there is an effect that the first member and the second member can be easily connected or released.

Hereinafter, an embodiment of a connection structure according to the present invention will be described with reference to the drawings.
FIG. 1 shows a connection structure 1 in the present embodiment. The connection structure 1 is the connection structure 1 that closes the opening of the filtration drying apparatus main body 2 as the first member in the filtration drying apparatus with the lower lid portion 3 as the second member, but is not limited thereto. For example, the connection structure 1 that closes the opening of the container body in the pressure vessel with a mirror cover or the connection structure 1 that connects a pair of tubes may be used. The connection structure 1 is particularly suitable for a large-sized (for example, having a large outer diameter of 1 m or more) filtration drying apparatus, a stirrer, a pressure vessel, piping, and the like, but is small (has a small outer diameter). It can also be applied to the filtration and drying apparatus of).

  The connection structure 1 includes the first flange portion 4 of the filter drying apparatus main body 2 as the first member having the first flange portion 4 extending radially outward over the entire outer periphery, and the entire peripheral portion. The second flange portion 5 of the lower lid 3 as the second member having the second flange portion 5 extending radially outward is disposed around the overlapping flange portion 14 formed by overlapping the second flange portion 5 of the lower lid portion 3. An annular clamp ring 6 is fastened to connect the filtration drying apparatus main body 2 and the lower lid 3, and the clamp ring 6 is loosened to release the connection.

  The filtration and drying device is a device for filtering the slurry stock solution inside and drying and discharging the solid cake containing moisture remaining after the filtration. The thing performed by heating from the outer surface of the drying apparatus main body 2, the thing performed by vacuum drying, the thing performed by hot air passage drying, etc. are mentioned.

  The filtration drying apparatus main body 2 has a bell-shaped housing shape in which the upper end is closed and the lower end is opened. Specifically, the filtration drying apparatus main body 2 has a shape of a downward opening in which an upper end portion of a substantially cylinder whose axis is formed along the vertical direction is closed. A first flange portion 4 is formed in the lower end portion (opening end portion) of the filtration drying apparatus main body 2 over the entire circumferential direction.

  As shown in FIG. 2, the first flange portion 4 is formed by extending the filtration drying device main body 2 radially outward at the opening end thereof, and the circumferential direction of the filtration drying device main body 2 It is formed continuously without interruption throughout the entire area. The first flange portion 4 has an inclined surface in which the upper surface 41 is inclined downward toward the outer side in the radial direction, and the lower surface 42 is a plane perpendicular to the axis of the filtration drying apparatus main body 2. That is, the first flange portion 4 is thinner in the vertical direction on the tip 43 side (outside in the radial direction), and the lower surface 42 is a surface perpendicular to the vertical direction as the lower end surface of the filter drying apparatus main body 2. Yes.

  Further, as shown in FIG. 1, the filtration drying apparatus main body 2 is provided with a first stopper 7. Specifically, as shown in FIG. 3, the first stopper 7 has a substantially rectangular attachment piece 71 whose longitudinal direction is formed along the vertical direction, and a lower end portion of the attachment piece 71. It is comprised in the substantially L shape comprised with the receiving piece 72 extended so that it may become substantially right-angled to a surface direction. In the present embodiment, the first stopper 7 includes an adjusting means 73. Specifically, the adjusting means 73 is configured such that a bolt arranged so that its axis is substantially perpendicular to the surface direction of the mounting piece 71 is inserted into the mounting piece 71 so that it can advance and retreat in the axial direction. The amount of protrusion of the bolt from the mounting piece 71 can be adjusted by advancing and retracting the bolt in the axial direction. That is, the adjusting means 73 can increase the amount of protrusion in the direction in which the receiving piece 72 from the mounting piece 71 extends by tightening the bolt, and conversely, the amount of protrusion decreases by loosening the bolt. It is comprised so that it can be made to.

  The first stopper 7 has the mounting piece 71 on the outer peripheral surface of the filtration drying apparatus main body 2 such that the reception piece 72 is inward in the radial direction of the filtration drying apparatus main body 2 (the tip 721 of the reception piece 72 is inward in the radial direction). Fixed to be installed on. Specifically, in the first stopper 7, the receiving piece 72 is located below the first flange portion 4, and the tip 721 of the receiving piece 72 is positioned radially outside the tip 43 of the first flange portion 4. In addition, it is attached to the side of the filtration drying apparatus main body 2.

  The adjusting means 73 is substantially the same height as the vertical position of the first flange portion 4, and the tip 731 of the adjusting means 73 is separated from the tip 43 of the first flange portion 4 by a predetermined distance. Are arranged. By operating the adjusting means 73, the distance between the tip 731 of the adjusting means 73 and the tip 43 of the first flange portion 4 can be adjusted. Specifically, when the bolt of the adjusting means 73 is tightened, the separation distance is reduced, and when the bolt is loosened, the separation distance is increased.

  In the present embodiment, two first stoppers 7 are provided. Specifically, as shown in FIG. 1, one of the first stoppers 7 is disposed at an angle of about 60 ° with respect to the reference center line X among the radial center lines of the filter drying apparatus main body 2. The other first stopper 7 is arranged so as to be symmetric with respect to the first first stopper 7 with respect to the reference center line X. That is, a pair of first stoppers 7 are provided so as to be symmetric with respect to the reference center line X.

  Further, the filter drying apparatus main body 2 is provided with a second stopper 8. Specifically, as shown in FIG. 4, the second stopper 8 has a substantially rectangular attachment piece 81 whose longitudinal direction is formed along the vertical direction and a lower end portion of the attachment piece 81. It is comprised by the substantially L shape comprised with the receiving piece 82 extended so that it might become substantially right-angled to a surface direction.

  In the present embodiment, the second stopper 8 includes guide means 9 and urging means 10. Specifically, the guide means 9 is formed with a groove along the direction perpendicular to the surface direction of the mounting piece 81 while opening to the front end 821 side of the receiving piece 82 at a position approximately in the center in the width direction of the receiving piece 82. Is made up of. The urging means 10 is provided on the mounting piece 81 so that its axis is substantially perpendicular to the surface direction of the mounting piece 81, and is configured to apply a urging force in the axial direction. In this embodiment, the urging means 10 is an air cylinder that expands and contracts in the axial direction, but may be a spring, a jack bolt, or the like.

  The second stopper 8 has an attachment piece 81 on the outer peripheral surface of the filtration drying apparatus main body 2 such that the reception piece 82 faces inward in the radial direction of the filtration drying apparatus main body 2 (the tip 821 of the reception piece 82 is inward in the radial direction). Fixed to be installed on. Specifically, in the second stopper 8, the receiving piece 82 is located below the first flange portion 4, and the tip 821 of the receiving piece 82 is positioned radially outside the tip 43 of the first flange portion 4. In addition, it is attached to the side of the filtration drying apparatus main body 2.

  The guide means 9 is arranged such that its groove is along the reference center line X. The urging means 10 has a height position substantially the same as the vertical position of the first flange portion 4, and a clamp ring 6 (clamp ring) disposed between the first flange portion 4 and the first flange portion 4. 6 will be described later.) Can be urged toward the inside in the radial direction of the filter drying apparatus main body 2. Specifically, the clamp ring 6 is urged toward the first flange portion 4 by extending the air cylinder. In the present embodiment, the second stopper 8 is arranged on the reference center line X so that both the first stopper 7 and the second stopper 8 are arranged at regular intervals in the circumferential direction. Has been. Therefore, the urging means 10 urges the clamp ring 6 along the reference center line X and toward the inner side in the radial direction of the filter drying apparatus main body 2.

  The lower lid portion 3 is for closing the opening of the filtration drying apparatus main body 2 and has a disk shape having a diameter substantially equal to the diameter of the filtration drying apparatus main body 2. The lower lid portion 3 is formed with a second flange portion 5 over the entire peripheral edge portion.

  As shown in FIG. 2, the second flange portion 5 is formed by extending the peripheral edge portion of the lower lid portion 3 outward in the radial direction, and without interruption throughout the entire circumferential direction of the lower lid portion 3. It is formed continuously. The second flange portion 5 has an inclined surface in which the lower surface 51 is inclined upward toward the radially outer side, and the upper surface 52 is a plane parallel to the disk-shaped surface direction of the lower lid portion 3. That is, the second flange portion 5 is thinner in the vertical direction toward the tip 53 side (outside in the radial direction), and the upper surface 52 is a surface perpendicular to the vertical direction. When the opening of the filter drying apparatus main body 2 is closed by the lower lid portion 3, the lower surface 42 of the first flange portion 4 and the upper surface 52 of the second flange portion 5 are in contact with each other or have a slight gap. The first flange portion 4 and the second flange portion 5 are overlapped with no misalignment so that the overlapping flange portion 14 is formed.

  As shown in FIG. 1, the clamp ring 6 includes a plurality of ring components (in this embodiment, three ring configurations of a first ring component 61, a second ring component 62, and a third ring component 63). Member) is connected in an annular shape. Specifically, the first ring constituting member 61 is a rod-like body whose longitudinal axis is curved in an arcuate shape, and as shown in FIG. Inward U-shaped. Here, the fitting groove 611 is a groove opened toward the radially inner surface side of the first ring component member 61, and the opposed side surfaces 612 and 612 are inclined surfaces that are closer to the bottom side of the groove. That is, the fitting groove 611 has a wider groove width toward the opening side of the groove and a narrower groove width toward the bottom side of the groove. The fitting groove 611 is formed continuously without being interrupted over the entire circumferential direction of the first ring component 61 (the entire longitudinal direction). Moreover, the radial direction outer surface side of the 1st ring structural member 61 does not have an unevenness | corrugation and a processus | protrusion, but is a smooth curved surface.

  The second ring component member 62 and the third ring component member 63 have the same shape as the first ring component member 61. That is, the second ring constituting member 62 is a rod-like body whose longitudinal axis is curved in an arc shape, and has a substantially inward U-shaped cross section having a fitting groove 621 on the radially inner surface side. The three-ring constituent member 63 is a rod-like body whose longitudinal axis is curved in an arc shape, and has a substantially U-shaped cross section having a fitting groove 631 on the radially inner side. The circumferential lengths of the first, second, and third ring constituent members 61, 62, and 63 can be set to different lengths, but are preferably substantially the same length. And as shown in FIG. 4, the 2nd ring structural member 62 is further provided with the protrusion part 622 which protruded below in the position of the approximate center of the circumferential direction. Specifically, a pin as a protruding portion 622 is fitted into the second ring constituting member 62 so that the tip portion protrudes from the lower surface 623 on the lower side thereof.

  Such first to third ring constituent members 61, 62, 63 are arranged in a ring shape in the circumferential direction (longitudinal direction), and a connecting portion P <b> 1 between the adjacent first ring constituent member 61 and the third ring constituent member 63 is formed. Clamping is performed by connecting with the hydraulic cylinder 11 as expansion / contraction means, and connecting the other connecting portion P2 so that each ring constituent member 61, 62, 63 can rotate inward or outward in the radial direction. The ring 6 is formed in an annular shape. Specifically, as shown in FIG. 1, one end 61a of the first ring constituent member 61 and one end 63a of the third ring constituent member 63 are connected via the hydraulic cylinder 11, and the first ring constituent member is connected. One end portion 62a of the second ring constituent member 62 is connected to the other end portion 61b of 61 via the hinge 12 so that both ring constituent members 61 and 62 can be rotated inward or outward in the radial direction. The other end portion 63b of the third ring constituting member 63 is connected to the other end portion 62b of the two ring constituting member 62 via the hinge 12 so that both the ring constituting members 62, 63 can turn inward or outward in the radial direction. Thus, the clamp ring 6 is formed in an annular shape.

  Here, in the present embodiment, the one end portion 61a outer surface of the first ring component member 61 and the one end portion 63a outer surface of the third ring component member 63 project radially outward from the outer surfaces of both the ring component members 61 and 63. By providing the hydraulic cylinder 11 so that a pair of hook-shaped attachment portions 13 are provided and the rod tip portions 131 of the pair of hook-shaped attachment portions 13 are connected to each other, The one end 61a and the one end 63a of the third ring constituting member 63 are connected. Accordingly, a gap is formed between the one end portion 61 a of the first ring constituting member 61 and the one end portion 63 a of the third ring constituting member 63 without any interposition. The gap between the matching first ring constituent member 61 and third ring constituent member 63 becomes wider or narrower.

  The hinge 12 is provided on the outer surface of each of the ring constituent members 61, 62, 63, and the rotation center C <b> 1 is located on the radially outer side of the first to third ring constituent members 63. Specifically, the rotation center C <b> 1 of the hinge 12 is the first ring constituent member among the diameters of the rings formed by connecting the ring constituent members 61, 62, 63, that is, the diameter of the clamp ring 6. 61 between the other end 61b of the second ring constituting member 62 and one end 62a of the second ring constituting member 62 (or between the other end 62b of the second ring constituting member 62 and the other end 63b of the third ring constituting member 63). That is, it is located on the diameter that passes through the connecting portion P2, and is arranged at a position spaced a predetermined distance from the outer surface of the first to third ring constituting members 61, 62, 63 radially outward.

  Accordingly, when the hydraulic cylinder 11 is contracted, the first ring component 61 and the third ring component 63 are rotated inward in the radial direction of the clamp ring 6 around the rotation center C1 of the hinge 12. The distance between the respective end portions 61a, 63a of the ring constituent member 61 and the third ring constituent member 63 is reduced, and the clamp ring 6 is reduced in diameter and is in a tightened state. On the contrary, by extending the hydraulic cylinder 11, the first ring component 61 and the third ring component 63 rotate around the rotation center C1 of the hinge 12 outward in the radial direction of the clamp ring 6, The distance between the first ends 61a and 63a of the first ring constituent member 61 and the third ring constituent member 63 is widened, and the clamp ring 6 is in a loosened state with a larger diameter.

  The clamp ring 6 having such a configuration has the first flange portion 4 of the filtration drying apparatus main body 2 and the second flange of the lower lid section 3 in a state where the opening of the filtration drying apparatus main body 2 is closed by the lower lid portion 3. The portion 5 is disposed around the overlapping flange portion 14 formed so as to overlap. Specifically, the clamp ring 6 is disposed on the radially outer side than the overlapping flange portion 14 and on the radially inner side of the mounting pieces 71 and 81 of the first stopper 7 and the second stopper 8. Yes. The clamp ring 6 is supported by receiving pieces 72 and 82 of the first stopper 7 and the second stopper 8, respectively. The clamp ring 6 has a center line passing through the ring-shaped center portion and a gap (connecting portion P1) between the one end portion 61a of the first ring constituting member 61 and the one end portion 63a of the third ring constituting member 63. They are arranged so as to coincide with the reference center line X. Accordingly, both the first stoppers 7 respectively correspond to the positions of the first ring constituent member 61 and the third ring constituent member 63 at the substantially central positions in the circumferential direction, and the second stopper 8 is the second stopper 8. This corresponds to the position of the ring component member 62 at the approximate center in the circumferential direction. As shown in FIG. 4, the protrusion 622 provided on the second ring constituting member 62 is fitted to the guide means 9 provided on the second stopper 8. Further, the urging means 10 urges the clamp ring 6 toward the connecting portion P <b> 1 between the first ring constituent member 61 and the third ring constituent member 63. That is, the urging means 10 abuts on the second ring constituent member 62 and urges the clamp ring 6 in the direction along the reference center line X and in the direction of pressing the second ring constituent member 62 against the overlapping flange portion 14. is doing.

Next, the connection and release operations in the connection structure 1 configured as described above will be described.
First, when the filtration drying apparatus main body 2 and the lower lid part 3 are connected, as shown in FIGS. 2 to 4, the opening is formed so as to close the opening at the lower end of the filtration drying apparatus main body 2. The lower lid part 3 is fitted in. Then, since the 1st flange part 4 and the 2nd flange part 5 are each formed over the circumferential direction perimeter, without rotating the lower cover part 3 to the circumferential direction like the conventional connection structure 1 However, the 1st flange part 4 and the 2nd flange part 5 overlap over the perimeter, and the overlapping flange part 14 is formed. In this state, the clamp ring 6 disposed around the overlapping flange portion 14 where the first flange portion 4 and the second flange portion 5 overlap each other is tightened by the hydraulic cylinder 11.

  Specifically, as the hydraulic cylinder 11 is contracted, the first ring component 61 and the third ring component 63 rotate radially inward around the rotation center C1 of the hinge 12, The distance between the one end 61a of the first ring component 61 and the one end 63a of the third ring component 63 gradually decreases. As a result, the diameter of the clamp ring 6 gradually decreases, and the fitting grooves 611, 621, 631 of the first to third ring constituting members 63 gradually fit into the overlapping flange portion 14. Here, since the protruding portion 622 provided on the second ring constituting member 62 is fitted to the guide means 9 of the second stopper 8, the clamp ring 6 is evenly distributed with respect to the overlapping flange portion 14. Tightened. Further, the second stopper 8 is provided with an urging means 10, and the urging means 10 is in a direction along the reference center line X and in a direction in which the second ring constituent member 62 is pressed against the overlapping flange portion 14. Since the clamp ring 6 is urged, the fitting groove 621 of the second ring constituting member 62 can be securely fitted to the overlap flange portion 14 when tightening, and the overlap flange portion 14 can be connected to the clamp ring 6 as a whole. It can be tightened evenly. In addition, the upper surface 41 of the first flange portion 4 is an inclined surface, and the lower surface 51 of the second flange portion 5 is an inclined surface. On the other hand, the opposing side surfaces of the fitting grooves 611, 621, and 631 are grooves. Since the inclined surface is closer to the bottom side, the overlapping flange portion 14 is fitted into the fitting groove like a wedge as shown in FIGS. Therefore, the clamping force to the inner side in the radial direction of the clamp ring 6 becomes a coupling force between the filtration drying apparatus main body 2 and the lower lid portion 3 (a force for sandwiching the overlapping flange portion 14 up and down), and the coupling is strengthened. Thus, as shown in FIG. 1, the filtration drying device main body 2 and the lower lid portion 3 are connected.

  Next, when the connection between the filter drying apparatus main body 2 and the lower lid portion 3 is released, the hydraulic cylinder 11 is extended to loosen the clamp ring 6 in the connected state shown in FIG. Then, the first ring component 61 and the third ring component 63 rotate radially outward around the rotation center C1 of the hinge 12, and the one end 61a of the first ring component 61 and the third ring configuration The distance between the one end portion 63a of the member 63 gradually increases, and the fitting grooves 611 and 631 and the overlapping flange portion 14 are fitted from the one end portion 63a side of the first ring constituting member 61 and the third ring constituting member 63. The match is released. That is, the area | region corresponding to the 1st ring structural member 61 and the 3rd ring structural member 63 among the clamp rings 6 is loosened. Then, as shown in FIG. 5, when the distance between the one end portion 61a of the first ring constituting member 61 and the one end portion 63a of the third ring constituting member 63 becomes a predetermined distance, the first ring constituting member 61 and the third ring constituting member 61 The ring constituent members 63 abut against the corresponding first stoppers 7. Specifically, the outer surfaces of the first ring constituent member 61 and the third ring constituent member 63 abut on the tip 731 (more specifically, the tip of the bolt) of the adjusting means 73 of each first stopper 7. At this stage, the fitting between the fitting groove 621 of the second ring constituent member 62 and the overlapping flange portion 14 has not been released yet. Further, by operating the adjusting means 73, the contact positions of the ring constituent members 61, 62, 63 can be adjusted.

  Subsequently, when the hydraulic cylinder 11 is further extended while the first ring constituent member 61 and the third ring constituent member 63 are in contact with the first stopper 7, the first ring constituent member The distance between the one end portion 61a of the component member 61 and the one end portion 63a of the third ring component member 63 does not increase any more, that is, the first ring component member 61 and the third ring component member 63 are not in the first stopper 7. The clamp ring 6 is displaced to the side facing the connecting portion P1 connected by the hydraulic cylinder 11, that is, the second ring constituting member 62 side. The first ring component member 61 and the third ring component member 63 rotate with the displacement, and the distance increases. Due to the displacement of the clamp ring 6, the fitting between the fitting groove 621 of the second ring component 62 and the overlap flange portion 14 is released. As a result, the fitting of the entire clamp ring 6 to the overlap flange portion 14 is released. Is done. Here, the protrusion 622 of the second ring constituting member 62 is fitted to the guide means 9 provided in the second stopper 8, and the guide means 9 is disposed along the reference center line X. Therefore, the clamp ring 6 is guided by the guide means 9 and is surely displaced along the reference center line X.

  In this way, by contracting the hydraulic cylinder 11, the clamp ring 6 can be quickly tightened over the entire circumference, and the filtration drying apparatus main body 2 and the lower lid portion 3 can be easily connected. Further, the clamp ring 6 in a tightened state can be quickly loosened over the entire circumference by extending the hydraulic cylinder 11 so that the connection between the filtration drying device main body 2 and the lower lid portion 3 can be easily released.

  Further, since the first stopper 7 is arranged around the clamp ring 6 without requiring a complicated structure such as a conventional link mechanism, the compact connecting structure 1 can be obtained.

  Further, a pair of first stoppers 7 are arranged so as to correspond to each of the first ring component member 61 and the third ring component member 63, and the ring component members 61, 63 are positioned substantially at the center in the circumferential direction. Therefore, the connecting structure 1 can be made more compact as compared with the case where the first stopper 7 is integrally formed over both the first ring component member 61 and the third ring component member 63, for example. And the clamp ring 6 is displaced smoothly.

  In addition, although this embodiment demonstrated the case where the clamp ring 6 connected the three ring structural members in the circumferential direction, it is not restricted to this, The case where two ring structural members are connected cyclically, or four or more The ring component members may be connected in a ring shape. However, when the clamp ring 6 is configured by connecting three ring constituent members in the circumferential direction, the amount of expansion and contraction of the hydraulic cylinder 11 is larger than when the clamp ring 6 is configured by two ring constituent members. There is an advantage that the coupling ring 1 can be more compact because the clamp ring 6 can be tightened or loosened while suppressing the above. Further, as compared with the case where the clamp ring 6 is constituted by four or more ring components, there is an advantage that the clamp ring 6 is smoothly displaced when the clamp ring 6 is tightened or loosened. Further, when the clamp ring 6 is constituted by four or more ring constituent members, either one or both of the two ring constituent members excluding the two ring constituent members connected by the hydraulic cylinder. Guide means 9 can be provided to correspond to the above.

  Moreover, although this embodiment demonstrated the case where the upper surface 41 of the 1st flange part 4 became the inclined surface which inclined below the radial direction outer side, it is not restricted to this, The lower surface 42 of the 1st flange part 4 and It can also be a parallel plane. Similarly, the lower surface 51 of the second flange portion 5 is not limited to the inclined surface, and may be a surface parallel to the upper surface 52 of the second flange portion 5. In this case, the opposing side surfaces of the fitting grooves of the ring constituent members are parallel to each other.

  Furthermore, in this embodiment, the case where the 1st ring structural member 61 and the 2nd ring structural member 62 and the 3rd ring structural member 63 and the 2nd ring structural member 62 are each connected via the hinge 12 is demonstrated. However, the present invention is not limited to this. For example, the other end 61b of the first ring constituting member 61 and the one end 62a of the second ring constituting member 62, and the other end 63b of the third ring constituting member 63 and the first ring structure. The other end portion 61b of the member 61 may be connected by a slide mechanism that expands and contracts in a direction parallel to the expansion and contraction direction of the hydraulic cylinder 11. In this case, the first ring component member 61 and the third ring component member 63 do not rotate with the expansion and contraction of the hydraulic cylinder 11 but move in parallel.

  Furthermore, in the present embodiment, the case where the hydraulic cylinder 11 is used as the expansion / contraction means has been described. However, the present invention is not limited to this. There may be.

  Moreover, although this embodiment demonstrated the case where the 1st stopper 7 was arrange | positioned in the circumferential direction approximate center of the 1st and 3rd ring structural members 61 and 63, it is not restricted to this, One end part side rather than the said center Alternatively, it may be provided on the other end side of the center. Specifically, the first stopper 7 has one first stopper 7 with respect to the reference center line X passing through the connecting portion P1 connected by the hydraulic cylinder 11 and the center portion of the clamp ring 6. You may provide so that it may become an angle of 20-80 degrees, and the other 1st stopper 7 may become an angle of 280-340 degrees. If the first stopper 7 is provided at an angle of 20 ° or less (or 340 ° or more) with respect to the reference center line X, it is difficult to sufficiently open the clamp ring 6. On the contrary, if the first stopper 7 is provided at an angle of 80 ° or more (or 280 ° or less) with respect to the reference center line X, a force for shifting the position of the clamp ring 6 is difficult to occur. It becomes difficult to shift the position. However, it is preferable to dispose the first stopper 7 substantially in the center in the circumferential direction of the first and third ring constituent members 61 and 63 because the clamp ring 6 is smoothly displaced according to the expansion and contraction of the hydraulic cylinder 11.

  Further, in the present embodiment, the case where a pair of the first stoppers 7 are provided corresponding to the first and third ring constituting members 63 has been described, but the present invention is not limited thereto, and for example, the first and third ring constituting members 61 are provided. , 63 may be arranged in two. Moreover, you may provide the stopper formed in circular arc shape so that the 1st thru | or 3rd ring structural members 61, 62, 63 may be enclosed. In this case, the guide means 9 and the urging means 10 can be provided in the middle of the arc.

The top view which shows the state which connected the filtration drying apparatus main body and lower cover part of the connection structure which concern on one Embodiment of this invention. FIG. 2 is an enlarged sectional view taken along line AA in FIG. 1. FIG. 3 is an enlarged cross-sectional view taken along line BB in FIG. The CC sectional view enlarged view of FIG. The top view which shows the state in the middle of canceling | releasing connection with the filtration drying apparatus main body and lower cover part of the connection structure which concern on one Embodiment of this invention. The top view which shows the state which cancelled | released connection with the filtration drying apparatus main body and lower cover part of the connection structure which concern on one Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Connection structure, 2 ... Filtration drying apparatus main body, 3 ... Lower cover part, 4 ... 1st flange part, 5 ... 2nd flange part, 6 ... Clamp ring, 7 ... 1st stopper, 8 ... 2nd stopper, 9 DESCRIPTION OF SYMBOLS ... Guiding means, 10 ... Biasing means, 11 ... Hydraulic cylinder, 12 ... Hinge, 13 ... Bridge-shaped mounting portion, 14 ... Polymerized flange portion, 61 ... First ring component, 62 ... Second ring component, 3rd ring component, 71, 81 ... Mounting piece, 72, 82 ... Receiving piece, 73 ... Adjusting means, 131 ... Saddle tip, 611, 621, 631 ... Fitting groove, 622 ... Projection, C1 ... times Moving center, P1, P2 ... Connection part, X ... Reference center line

Claims (6)

  An annular clamp ring disposed around the overlapping flange portion formed by overlapping the flange portions of the first member and the second member each having a flange portion extending outward over the entire outer periphery. The clamp ring is configured to connect the first member and the second member, loosen the clamp ring, and release the connection between the first member and the second member. One of the connecting portions of the ring constituent members is tightened by shortening the distance between the adjacent ring constituent members, and the distance between the adjacent ring constituent members is increased. In the connection structure in which the clamp ring is loosened by spreading, the first member or the second member is provided with a stopper, and the stopper is connected to the first member and the first member. When the clamp ring is loosened so as to release the connection with the member, the adjacent ring constituent member is brought into contact with both of the adjacent ring constituent members whose distance is expanded by the expansion / contraction means, and further from the state by the expansion / contraction means. A connecting structure characterized in that the clamp ring is displaced to the side facing the connecting portion connected by the expanding / contracting means by increasing the distance between the constituent members.   The connection structure according to claim 1, wherein the clamp ring is configured by connecting three ring constituent members in an annular shape.   A pair of the stoppers are arranged so as to correspond to each of the adjacent ring constituent members, and one stopper is provided with respect to a center line passing through the connecting portion connected by the expansion / contraction means and the center portion of the clamp ring. The connecting structure according to claim 1 or 2, wherein the stopper is provided so as to have an angle of 20 to 80 ° and the other stopper has an angle of 280 to 340 °.   The stoppers are arranged in pairs so as to correspond to the adjacent ring constituent members, respectively, and correspond to the positions of the substantially central portions in the circumferential direction of the respective ring constituent members. The connection structure described in 1.   The clamp ring is configured by connecting three or more ring constituent members in an annular shape, and the first member or the second member includes at least one ring constituent member other than the adjacent ring constituent members. The connection structure according to any one of claims 1 to 4, wherein guide means for guiding the displacement of the clamp ring is provided so as to correspond.   6. The urging means for urging the clamp ring toward the connecting portion connected by the expansion / contraction means is provided on the first member or the second member. Connection structure in any one.

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