JP2017187145A - Opening and closing mechanism for lid body of pressure vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening and closing mechanism for a lid body of a pressure vessel, which easily enables movement and contact/separation of the lid body with a simple structure and can press the lid body uniformly against an opening portion.SOLUTION: A pressure vessel 10 has a can body 14 that is formed with an opening portion 12 having an opening plane, and a lid body 16 for opening and closing the opening portion 12. An opening and closing mechanism for the lid body 16 is furnished with a parallel movement mechanism making the lid body 16 movable in parallel with the opening plane, and a contact/separation mechanism performing contact/separation of the lid body 16 in a direction perpendicular to the opening plane. The contact/separation mechanism comprises crank mechanisms, inclined members 32, rollers 34, and guide members 36. At the contact/separation position of the lid body 16, cranks 26 make a rotation motion in a state that movement of the lid body 16 parallel to the opening plane is stopped, thereby the rollers 34 rotate and move on inclined surfaces 32c of the inclined members 32 and the rollers 34 press the inclined members 32, so that the lid member 16 is moved in the guide directions of the guide members 36 to perform contact/separation of the lid member 16.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an opening / closing mechanism for a lid of a pressure vessel for opening / closing the opening of the pressure vessel with the lid.

  The pressure vessel is designed so that the lid and can of the pressure vessel can withstand pressure reduction or pressurization. A lid that can be freely opened and closed is provided at the opening, and the object placed in the pressure vessel is processed by opening and closing the lid. Patent Document 1 discloses a lid opening / closing mechanism for a pressure vessel that uses a fluid pressure cylinder engaged with an expandable / contractible piston rod and drives the fluid pressure cylinder to rotate to open and close the lid.

JP 11-311333 A

  To close the lid of the pressure vessel, move the lid so as to close the opening surface of the opening, and to apply a force to press the lid toward the opening surface to further increase the degree of sealing. . On the contrary, in order to open the lid body, the pressed force is released to move the lid body away from the opening surface, and the lid body is moved so that the opening surface can be seen. When the lid of the pressure vessel is moved, the lid is slid or lifted, so that a member serving as a power source may be provided and moved so that the lid can be easily moved.

  In the lid opening / closing mechanism of the pressure vessel described in Patent Document 1, a fluid pressure cylinder engaged with an extendable piston rod is used as a power source, and the fluid pressure cylinder is driven to rotate. However, since the fluid pressure cylinder itself as a power source is disposed so as to be able to swing and the position of the power source moves, an empty space for the power source must be secured. The movement for opening and closing the lid is complicated by the combination of the movement of the piston that expands and contracts and the movement of the fluid pressure cylinder that rotates through the shaft. For this reason, when it is going to move and contact / separate a cover body with one power source, there exists a subject that the structure of the opening-closing mechanism of a cover body will become complicated. Further, since the movement of the lid is a rotational movement via the rotation shaft, the lid can enter from an oblique direction of the opening surface and uniformly press the lid in the direction perpendicular to the opening surface at the position of the opening surface. Difficult to seal.

  Accordingly, the present invention has been made to solve the above-described problems, and the object of the present invention is to allow the lid body to be easily moved and separated with a simple configuration, and to make the lid body uniform with respect to the opening. An object of the present invention is to provide a mechanism for opening and closing a lid of a pressure vessel that can be pressed onto the pressure vessel.

  In order to achieve the above object, the pressure vessel lid opening / closing mechanism of the present invention has the following configuration. That is, the present invention is an opening / closing mechanism for a lid of a pressure vessel having a can having an opening having an opening and a lid for opening / closing the opening, the driving device, and the drive A power transmission member configured to transmit a driving force from the apparatus and disposed in parallel to the opening surface; and an engagement member engaged with the power transmission member, wherein the engagement member is the power A translation mechanism that moves along the transmission member and enables the lid to move in parallel with the opening surface, and a position perpendicular to the opening surface at a position where the lid contacts and separates from the opening. A contact / separation mechanism that contacts and separates the lid body, and the contact / separation mechanism is supported by a crankshaft having a rotation shaft in a direction perpendicular to the opening surface, and rotatably supported by the crankshaft. A crank, a connecting member for connecting the crank and the engaging member, and a rod A crank mechanism, an inclined member having an inclined surface whose distance from the rotating surface of the crank continuously changes, a roller on a distal end side of the crank that goes in the circumferential direction from the rotation center of the crank shaft, and the lid A guide member for supporting the body on the parallel movement mechanism so as to be movable parallel to the opening surface and to be movable toward and away from the opening surface in a direction perpendicular to the opening surface. In the state where the movement parallel to the opening surface of the lid is stopped at the contact / separation position of the lid, the drive device is further driven, and the crank rotates. The roller moves while rotating the inclined surface of the inclined member, and the roller presses the inclined member, so that the lid body moves in the guide direction of the guide member, and the lid body is brought into and out of contact with the inclined member. To do And butterflies. According to this configuration, both parallel movement and contact / separation can be performed with one driving device, so that the number of parts can be reduced and space can be saved. In addition, the lid does not approach the opening surface from a direction that is not perpendicular to the opening surface, and approaches from the direction perpendicular to the opening surface, so that the lid body can be uniformly pressed against the opening. Furthermore, the parallel movement and contact / separation of the lid can be performed without changing the position of the driving device.

  In the present invention, the inclined member includes a first inclined member and a second inclined member, and the inclined surface of the first inclined member and the inclined surface of the second inclined member are opposed to each other. May be in a relationship. According to this, since one of the two inclined members arranged opposite to each other is used to bring the lid close to the opening surface, and the other is used to move the lid away from the opening surface, The lid can be moved away from the door by the rotational movement of the crank.

  In the present invention, the crank is provided with a first roller on one end side and a second roller on the other end side, and the first roller rotates on the inclined surface of the first inclined member. The second roller may move while rotating the inclined surface of the second inclined member. According to this, the two rollers are divided into those for approaching the lid body and those for separating the lid body, and the two rollers rotate on the inclined surfaces of the respective inclined members. The lid can be moved close to and away by the rotational movement of the crank while dispersing the.

  In the present invention, the power transmission member and the engagement member may be a ball screw including a screw shaft and a nut. According to this, the lid body can be moved without changing the installation position of the screw shaft, and the lid body can be moved in parallel with and separated from it only by the movement of the screw shaft.

  In the present invention, a guide rail may be provided in parallel to the opening surface, and the parallel movement mechanism may slide along the guide rail. According to this, even if the lid is large and heavy and is large and heavy so that it can withstand a predetermined pressure, the lid can be moved and moved in parallel.

  Further, in the present invention, a stopper for stopping a parallel movement of the lid body by contacting a part of the parallel movement mechanism at the contact / separation position of the lid body, and further, The engagement device may move along the power transmission member when the drive device is driven. According to this, even if the power unit is driven, the lid can be reliably stopped at the contact / separation position, and the power unit can be driven to approach and open and close the opening of the lid. .

  In the present invention, the opening surface may be parallel to the vertical direction, and the lid may move in the vertical direction by the parallel movement mechanism and move in the horizontal direction by the contact / separation mechanism. According to this, the lid body can be moved in the vertical direction while the lid body is suspended by the engaging member, and the lid body can be contacted and separated at the contact / separation position of the lid body. Further, when the lid is supported by the guide member, it can be supported even with a simple configuration and can be moved in the contact / separation direction.

  Further, in the present invention, one opening in the two pressure vessels and the other opening are arranged to face each other, and one lid is formed by one driving device and two contact / separation mechanisms. The other lid body may move in the opposite direction, and contact and separation may be performed with respect to the two respective pressure vessels. According to this, since the lid can be opened and closed without moving the position of the driving device, the two lids can be moved in parallel with each other by one driving device, and the two pressure vessels are arranged opposite to each other. It is possible to move continuously between the two pressure vessels.

  According to the lid opening / closing mechanism according to the present invention, the lid can be easily moved and contacted / separated with a simple configuration, and the lid of the pressure vessel capable of pressing the lid uniformly against the opening. An opening / closing mechanism can be provided.

It is an example of the front view of a pressure vessel, and is a state in which a cover body exists in an open parallel movement limit position. It is an example of the front view of a pressure vessel, and it is in the state where a lid body is in a contact / separation position and approaches an opening face. It is the figure which expanded the side surface of a pressure vessel, and the opening part in two pressure vessels is opposingly arranged, and it is in the state which has the attachment / detachment mechanism of each cover body between two cover bodies. It is the front view which expanded the separation / contact mechanism, and is a state when the cover body is separated from the opening. It is the front view which expanded the separation / contact mechanism, and is a state when the cover body is approaching and pressing the opening. It is the figure seen toward the front-end | tip direction of each arrow in FIG. 5, A is a top view of a 1st inclination material, B is a side view of a 2nd inclination material.

  Hereinafter, the opening / closing mechanism of the lid 16 of the pressure vessel 10 according to the present embodiment will be described in detail with reference to the drawings. FIG. 1 shows an example of a front view of the pressure vessel 10 and shows a state in which the lid 16 is at the open parallel movement limit position and the opening 12 is opened. FIG. 2 shows an example of a front view of the pressure vessel 10 and shows a state in which the lid body 16 is in the contact / separation position, is pressed close to the opening surface, and the opening 12 is closed. FIG. 3 is an enlarged view of the side surface of the pressure vessel 10, and the opening portions 12 of the two pressure vessels 10 are arranged to face each other, so that the respective lid bodies 16 are separated from each other. There is a mechanism, and each opening 12 is shown closed. FIG. 4 shows an enlarged front view of the separation / contact mechanism, and shows a state when the lid 16 is separated from the opening 12. FIG. 5 shows an enlarged front view of the separation / contact mechanism, and shows a state where the lid 16 is pressed close to the opening 12. FIG. 6 shows a view of the second inclined member 32b as viewed from the direction of the arrow in FIG. 5, A shows a plan view of the second inclined member 32b, and B shows a side view of the first inclined member 32a. In each figure, the case where the cover body 16 moves in the vertical direction by the parallel movement mechanism and moves in the horizontal direction by the contact / separation mechanism is shown.

  As shown in each drawing, the pressure vessel 10 used in the present embodiment includes a can body 14 in which an opening 12 having an opening surface is formed, and a lid body 16 for opening and closing the opening 12. The opening surface is a plane including the opening 12 of the pressure vessel 10. Normally, the opening 12 is circular, but the shape of the opening 12 is not particularly limited, and the opening 12 shown in FIG. 1 is rectangular and covers a heating device or the like around the can body 14. Also good. There is a flange portion around the can body 14 on the opening surface, and a packing is provided so that the lid body 16 can be in close contact therewith.

  The opening / closing mechanism of the lid body 16 of the pressure vessel 10 includes a parallel movement mechanism and a contact / separation mechanism. By the translation mechanism, the lid body 16 translates in a direction parallel to the opening surface between the positions of the lid body 16 shown in FIGS. Further, the lid body 16 approaches or separates from the opening surface in a direction perpendicular to the opening surface at the contact / separation position of the lid body 16 with respect to the opening 12 by the contact / separation mechanism. The contact / separation position is a position where the opening portion 12 can be closed by the lid body 16, and the lid body 16 is moved in a direction perpendicular to the opening surface, so that the lid body 16 abuts against the flange portion around the can body 14. It is a position where you can touch.

  The parallel movement mechanism includes a driving device 18, a power transmission member 20 that transmits a driving force from the driving device 18, and is disposed in parallel to the opening surface, and an engagement member that is engaged with the power transmission member 20. 22. FIG. 1 and FIG. 2 each show one drive device 18, a power transmission member 20, and an engagement member 22. The driving device 18 is not limited in power as long as the power transmission member 20 can be moved. As an example, a motor using electric power as shown in FIGS. 1 and 2 or a handle for human power is used. be able to. The driving device 18 is provided near one end of the power transmission member 20.

  The power transmission member 20 shown in FIGS. 1 and 2 has a straight bar shape with a circular cross section, and an engagement member 22 is engaged with the rod-shaped power transmission member 20. As an example of the power transmission member 20 and the engagement member 22, there is a ball screw including a screw shaft and a nut, and the rotational movement of the power transmission member 20 by the driving device 18 is converted into the linear motion of the engagement member 22. 22 moves along the power transmission member 20 to reciprocate. At this time, since the engaging member 22 and the lid body 16 are indirectly connected via some members, the lid body 16 is moved in parallel with respect to the opening surface by the movement of the engaging member 22. Can be made. The power transmission member 20 is disposed at a length necessary to move at least the lid 16 to the contact / separation position. When the cover 16 is moved from the open state of the opening 12 shown in FIG. 1 to the position where the opening surface of the opening 12 shown in FIG. The parallel movement stops.

  The contact / separation mechanism is a mechanism that is driven at the contact / separation position of the lid body 16. The contact / separation mechanism includes a crankshaft 24 having a rotation shaft in a direction perpendicular to the opening surface, a crank 26 rotatably supported on the crankshaft 24, and a connecting member 28 that connects the crank 26 and the engagement member 22. And a crank mechanism having a rod 30. The crankshaft 24, the crank 26, the connecting member 28, and the rod 30 shown in FIGS. 1 and 2 are provided two by one with respect to one lid 16, and the axis of the power transmission member 20 is symmetrical with respect to the lid 16. It is provided on the left and right with respect to the center. However, the lid 16 can be brought into and out of contact with each other. The separation / contact mechanism moves in parallel with the lid 16 and the parallel movement mechanism.

  When the lid body 16 is moving in a direction to close the opening surface, the parallel movement stop position of the lid body 16 is also a contact / separation position of the lid body 16. The driving device 18 can be driven even at the contact / separation position of the lid body 16. Further, the engaging member 22 is movable along the power transmission member 20 even when the parallel movement of the lid body 16 along the power transmission member 20 is parallel to the opening surface. For this reason, since the parallel movement of the lid body 16 is stopped at the contact / separation position, the driving device 18 is driven to move the engaging member 22 and the crank 26 is rotated. In the contact / separation position, the crank mechanism can convert the linear motion by the engagement member 22 into the rotational motion of the crank 26 about the crankshaft 24. Here, the opening surface and the flange surface shown in each drawing and the rotation surface of the crank 26 are in a parallel positional relationship, but this is not restrictive.

  Further, the contact / separation mechanism is provided on the surface of the lid body 16 and has an inclined member 32 having an inclined surface 32c whose distance from the rotating surface of the crank 26 continuously changes, and a circular shape from the rotation center of the crankshaft 24. And a roller 34 on the distal end side of the crank 26 facing in the circumferential direction. The position of the roller 34 and the position of the inclined member 32 are adjusted so that the roller 34 can rotate at least the inclined surface 32 c of the inclined member 32.

  Further, the contact / separation mechanism includes a guide member 36 that supports the lid 16 so as to be movable in parallel and can be contacted / separated in a direction perpendicular to the opening surface. The guide member 36 shown in FIGS. 1 and 2 is supported by a parallel movement mechanism, and particularly supported by a support member 40 engaged with a guide rail 38 described later. As a specific example, the guide member 36 may be a cylinder. By using the guide member 36, the lid 16 is supported by the guide member 36 and can move freely in a direction perpendicular to the opening surface, and the lid 16 is in a direction perpendicular to the opening surface. It is not fixed in the contact / separation direction. However, the parallel movement mechanism and the contact / separation mechanism which are members other than the lid 16 supported by the guide member 36 are fixed in a direction perpendicular to the opening surface.

  In the inclined surface 32c of the inclined member 32, the distance in the direction perpendicular to the opening surface from the fixed parallel movement mechanism or contact / separation mechanism to the inclined surface 32c continuously changes. In other words, it can be said that the inclined member 32 has the inclined surface 32c whose distance from the rotating surface of the crank 26 which is a part of the contact / separation mechanism continuously changes.

  When the roller 34 moves while rotating in contact with the inclined surface 32 c and presses the inclined member 32, the lid body 16 can be moved in a direction perpendicular to the opening surface. As an example, FIG. 6 shows a part of the inclined member 32 and the crank mechanism. The distance from the rotation surface of the crank 26 shown in FIG. 6A is different, and in the arrows L1 and L2 indicating the distance, L1 is longer and L2 is shorter. When the roller 34 rotates in the direction from the L1 side to the L2 side, the members other than the lid body 16 are fixed in the direction perpendicular to the opening surface as the roller 34 rotates toward the L2 side. The material 32 is pressed, and the lid body 16 moves in a direction approaching the opening surface.

  Before and after the roller 34 rotates and moves on the inclined surface 32c, the cover body 16 is supported in the direction perpendicular to the opening surface while being supported by the guide member 36 by an amount corresponding to the difference in distance from the rotating surface of the crank 26 in the inclined member 32. Can move to. The movement distance in the contact / separation direction is set so that the lid 16 can press the packing provided on the flange portion and come into contact with the flange portion, and the difference in distance from the rotating surface of the crank 26 corresponding to the movement distance is set. An inclined surface 32c of the attached inclined member 32 is provided.

  In addition, the position of the driving device 18 and the position of the power transmission member 20 do not move, and the lid 16 can be opened and closed even in a fixed state. Space can be made. Moreover, since the movement by the drive device 18 is a continuous movement in the same direction, the parallel movement and contact / separation of the lid body 16 can be performed smoothly.

  Two inclined members 32 are provided for one crank mechanism. Two inclined members 32 are defined as a first inclined member 32a and a second inclined member 32b. The inclined surface 32c of the first inclined member 32a and the inclined surface 32c of the second inclined member 32b are arranged so as to face each other. In this case, one roller 34 is provided between the opposed inclined members 32 so that the rollers 34 move while rotating on the respective inclined surfaces 32c. Of the two inclined members 32 arranged opposite to each other, the first inclined member 32a is used to separate the lid 16 from the opening surface, and the second inclined member 32b is used to bring the lid 16 closer to the opening surface. It should just be used for. At this time, the inclined surface 32c can be rotationally moved while the roller 34 presses either one of the two inclined members 32, and the lid body 16 moves along the guide member 36 to contact and separate the lid body 16. It can be performed.

  The opening / closing mechanism of the lid 16 of the pressure vessel 10 according to the present embodiment uses the inclined member 32 so that the roller 34 rotates and moves the inclined surface 32c so that the lid 16 approaches the opening surface or is separated from the opening surface. You can. Even if there is only one inclined member 32 for one crank mechanism, the lid 16 can be brought close to the opening surface or separated from the opening surface. In this case, the lid 16 may be biased so that the lid 16 approaches or separates from the opening surface, and a biasing means may be provided on the guide member 36 or the like. Further, since the lid body 16 moves in parallel from the direction perpendicular to the opening surface, the lid body 16 can be uniformly pressed against the opening portion 12.

  As shown in each figure, the crank 26 may be provided with a first roller 34a on one end side and a second roller 34b on the other end side. The first roller 34a moves while rotating the inclined surface 32c of the first inclined member 32a, and the second roller 34b moves while rotating the inclined surface 32c of the second inclined member 32b. FIG. 6B shows a part of the first inclined member 32a and the crank mechanism. The distance from the rotation surface of the crank 26 is different, and in the arrows L3 and L4 indicating the distance, L3 is shorter and L4 is longer. When the roller 34 rotates in the direction from the L4 side to the L3 side, the members other than the lid body 16 are fixed with respect to the direction perpendicular to the opening surface as the roller 34 rotates toward the L3 side. The material 32 is pressed and moves in a direction separating from the opening surface. As a result, the two rollers 34 rotate on the inclined surfaces 32c of the inclined members 32 separately for approaching and separating, so that the rotational motion of the crank 26 is distributed while distributing the force necessary for contact and separation of the lid body 16. Thus, the lid 16 can be contacted and separated.

  FIG. 1 and FIG. 2 show the guide rail 38 that is housed inside the frame body 42. The guide rail 38 may be arranged in parallel to the opening surface, and the parallel movement mechanism may slide along the guide rail 38. At this time, as an example, a support member 40 that engages the guide rail 38 and slides along the guide rail 38 may be provided, and the guide member 36 may be provided as shown in the drawing. The pressure vessel 10 includes a small vessel and a large vessel. In the case of the large pressure vessel 10, the lid body 16 must be strong enough to withstand the pressure, and the weight of the lid body 16 is correspondingly increased. Becomes heavier. For this reason, the guide rail 38 and the support member 40 may be provided, and the lid body 16 may be slid along the guide rail 38 and moved parallel to the opening surface. In addition, the lid body 16 can be contacted and separated while being supported by the support member 40 that engages with the guide rail 38.

  Further, the opening / closing mechanism of the lid body 16 of the pressure vessel 10 according to the present embodiment is a stopper for stopping a parallel movement of the lid body 16 by contacting a part of the parallel movement mechanism at the contact / separation position of the lid body 16. 44. The stopper 44 that stops the parallel movement of the lid body 16 at the contact / separation position is referred to as a stopper 44 for the contact / separation position. The position where the stopper 44 for the contact / separation position is provided is not particularly limited, but it may be provided on the frame body 42 as shown in FIGS. 1 and 2, and the parallel movement may be stopped when the support member 40 is touched. At the contact / separation position, the parallel movement of the lid body 16 is stopped, the drive device 18 is in a driveable state, and the engagement member 22 is in a state of being movable along the power transmission member 20. Further, a sensor or the like is provided in addition to the stopper 44 for the contact / separation position, and the cover 16 is perpendicular to the opening surface even when the parallel movement mechanism is stopped with an object sandwiched outside the contact / separation position of the cover 16. It can be set not to move in any direction.

  Further, a position that is a movement limit of the lid body 16 that is moved to open the opening 12 is set as an open parallel movement limit position. A stopper (not shown) for stopping the parallel movement of the lid 16 may be provided at the open parallel movement limit position, or a stopper (not shown) for stopping the open parallel movement may be provided. At the open parallel movement limit position, the driving device 18 is not driven, the movement of the engaging member 22 is stopped, and the moving lid can be stopped reliably.

  Further, the opening surface may be parallel to the vertical direction, and the lid body 16 can be moved in the vertical direction by the parallel movement mechanism, and can be moved in the horizontal direction by the contact / separation mechanism, so that the lid body 16 can be contacted and separated. . When the opening surface is vertical and the lid body 16 moves in the vertical direction, the lid body 16 can be moved while being suspended. For example, if the opening surface is parallel to the horizontal direction, the lid 16 is separated from the opening surface, and thus a force for lifting the lid 16 in the direction opposite to the gravitational direction is required. And it is necessary to provide the guide member 36 with a member that can control the movement of the lid 16 so that a large load is not applied to the roller 34 that rotates when the lid 16 moves. However, when the opening surface is in the vertical direction, the lid body 16 is in a state in which it can freely move in the direction perpendicular to the opening surface while being supported by the guide member 36. For this reason, the lid body 16 can be moved without applying a large load to the roller 34, and the lid body 16 can also be moved in the contact / separation direction even if the opening surface has a simple configuration compared to the horizontal direction. .

  Further, in the opening / closing mechanism of the lid body 16 of the pressure vessel 10 according to the present embodiment, as shown in FIG. 3, even when the opening portions 12 of the two pressure vessels 10 are arranged to face each other, the lid body 16 can be opened / closed. Is possible. This is because the positions of the parallel movement mechanism including the driving device 18 and the contact / separation mechanism including the crank mechanism are fixed. One driving device 18, a power transmission member 20, and an engagement member 22 are provided between the two lids 16, and a contact / separation mechanism including a crank mechanism and a guide member 36 for each lid 16 is disposed. To do. By these two contact / separation mechanisms, the two lid bodies 16 move in opposite directions so as to approach or separate from each other's opening surfaces, so that the lid bodies 16 come into contact with and separate from the two respective pressure vessels 10. Done. If the opening portions 12 of the two pressure vessels 10 are arranged opposite to each other and the respective lid bodies 16 can be opened and closed by one driving device 18, the pressure vessels 10 having different temperatures are arranged separately for heating and cooling, Efficient object processing is possible.

DESCRIPTION OF SYMBOLS 10 Pressure vessel 12 Opening part 14 Can body 16 Cover body 18 Drive apparatus 20 Power transmission member 22 Engaging member 24 Crankshaft 26 Crank 28 Connecting member 30 Rod 32 Inclined material 32a 1st inclined material 32b 2nd inclined material 32c Inclined Surface 34 Roller 34a First roller 34b Second roller 36 Guide member 38 Guide rail 40 Support member 42 Frame body 44 Stopper

Claims (8)

An opening / closing mechanism for a lid of a pressure vessel having a can body having an opening having an opening surface and a lid for opening / closing the opening,
A driving device, a power transmission member that transmits a driving force from the driving device, and is disposed in parallel to the opening surface; and an engagement member engaged with the power transmission member, A parallel movement mechanism in which an engagement member moves along the power transmission member and enables the lid to move in parallel with the opening surface;
A contact / separation mechanism for contacting / separating the lid with respect to a direction perpendicular to the opening surface at the contact / separation position of the lid with respect to the opening;
The contact / separation mechanism includes a crankshaft having a rotating shaft in a direction perpendicular to the opening surface, a crank rotatably supported on the crankshaft, and a connecting member that connects the crank and the engaging member. A crank mechanism having a rod, an inclined member having an inclined surface whose distance from the rotating surface of the crank continuously changes, and a tip end side of the crank that goes in the circumferential direction from the center of rotation of the crankshaft. A roller, and a guide member that supports the lid by the parallel movement mechanism and allows the parallel movement with respect to the opening surface and guides the lid member so as to be able to contact and separate in a direction perpendicular to the opening surface.
The inclined member is provided on the surface of the lid body, and the driving device is further driven in a state where movement parallel to the opening surface of the lid body is stopped at the contact / separation position of the lid body, When the crank rotates, the roller moves while rotating on the inclined surface of the inclined member, and when the roller presses the inclined member, the lid moves in the guide direction of the guide member. A mechanism for opening and closing the lid of the pressure vessel.   The inclined member has a first inclined member and a second inclined member, and the inclined surface of the first inclined member and the inclined surface of the second inclined member are in a positional relationship facing each other. The opening / closing mechanism for the lid of the pressure vessel according to claim 1.   The crank is provided with a first roller on one end side and a second roller on the other end side, and the first roller moves while rotating on the inclined surface of the first inclined member, and the second roller The pressure container lid opening / closing mechanism according to claim 2, wherein the roller moves while rotating the inclined surface of the second inclined member.   4. The opening / closing mechanism for a lid of a pressure vessel according to claim 1, wherein the power transmission member and the engaging member are ball screws each including a screw shaft and a nut. 5.   The pressure vessel according to any one of claims 1 to 4, wherein a guide rail is disposed in parallel to the opening surface, and the parallel movement mechanism slides along the guide rail. Opening and closing mechanism of the lid.   In the contact / separation position of the lid, a part of the parallel movement mechanism comes into contact with the stopper to stop the parallel movement of the lid, and the driving device is further driven in the contact / separation position. The opening / closing mechanism for the lid of a pressure vessel according to any one of claims 1 to 5, wherein the engagement member moves along the power transmission member.   The opening surface is parallel to a vertical direction, and the lid body moves in the vertical direction by the parallel movement mechanism and moves in the horizontal direction by the contact / separation mechanism. The opening / closing mechanism for the lid of the pressure vessel according to claim 6.   One opening in the two pressure vessels and the other opening are arranged to face each other, and one lid and the other lid are formed by one driving device and two contact / separation mechanisms. The opening and closing of the lid of the pressure vessel according to any one of claims 1 to 7, wherein the lids of the pressure vessels are moved toward and away from each other and are brought into contact with and separated from each of the two pressure vessels. mechanism.

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