JP2012206600A - Door opening/closing device for vacuum apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door opening/closing device for a vacuum apparatus in which a space for performing the opening and closing movement of a door for opening and closing an opening of a vacuum container arranged so as to face an axial line in the horizontal direction is minimized and space-saving can be achieved.SOLUTION: The door opening/closing device for the vacuum apparatus includes: a pit 15 which is disposed on a front side floor surface of the opening 11a of a vacuum container 11 and has such a size as to permit the storage of a door 12; a gate shape frame 16 having a pair of extensible contractible columns 16a, 16b extensible and contractible in the vertical direction disposed at door width direction both sides of the pit and an upper frame 16c hung over the upper ends of the pair of extensible contractible columns; a door hanging means 20 disposed on the upper frame; and an extensible contractible means for extending and contracting the extensible contractible columns where the extensible contractible columns are formed to be extensible and contractible between a rising location where the door can close the opening of the vacuum container, and a falling location where the door is accommodated into the pit while making the opening of the vacuum container into the full open state.

Description

  The present invention relates to a door opening / closing device for a vacuum apparatus, and more particularly to an apparatus for opening / closing a door provided at an opening of a large vacuum vessel used in a space environment test apparatus or the like.

  Conventionally, as a door opening and closing device used in large vacuum equipment such as space environment test equipment with the axis line oriented horizontally, a cart type linear opening and closing type that moves the carriage with the door back and forth in the axial direction of the vacuum vessel Device (for example, refer to Patent Document 1) and a suspended horizontal movement type opening and closing device (for example, a suspended horizontal movement type opening and closing device that suspends a door movably in a horizontal direction perpendicular to the axis of the vacuum vessel on an upper rail provided above the vacuum vessel. (See Patent Document 2), or a cart-type horizontally-moving switchgear (for example, Patent Document 3) that hangs a door on a portal frame standing on the cart and moves the cart in a horizontal direction perpendicular to the axis of the vacuum vessel. And a hinged opening / closing device (for example, see Patent Document 4) in which a door is pivotally connected to a vacuum vessel via a hinge provided on one side of an opening of the vacuum vessel. Yes.

JP 2007-106342 A JP 7-125700 A JP 2009-208658 A JP 2003-137200 A

  However, in any type of opening and closing device, a large space must be secured in front of or on the side of the opening in order to open and close the door, which increases the size of the vacuum vessel and the size of the door. As a result, the space for opening and closing the door provided on the opening side of the vacuum vessel is also widened, and there is a problem that the space efficiency in the building in which a large vacuum apparatus such as a space environment test apparatus is installed deteriorates. In addition, since it is necessary to provide a space for the door to open and close on the floor of the building, the internal floor of the vacuum vessel may be higher than the floor of the building. When loading and unloading equipment, it is necessary to prepare separate equipment for connecting the floor of the building and the internal floor of the vacuum vessel. It was also necessary to secure a space for this.

  Therefore, the present invention provides a door opening / closing device for a vacuum device that minimizes a space for opening and closing a door that opens and closes an opening of a vacuum vessel arranged with its axis line oriented in the horizontal direction, and can save space. It is an object.

  In order to achieve the above object, a door opening / closing device for a vacuum device according to the present invention is the door opening / closing device for a vacuum device that opens / closes a door provided in an opening of a vacuum vessel having an axis line oriented horizontally. A pit having a size capable of accommodating the door provided on the front floor surface of the unit, a pair of telescopic columns provided on both sides of the pit in the width direction of the door and extendable in the vertical direction, and the pair An upper frame that is stretched over the upper end of the telescopic column; a door suspension unit provided on the upper frame; and a telescopic unit that simultaneously expands and contracts the pair of telescopic columns. The door is formed to be extendable and contractable between a raised position where the opening of the vacuum vessel can be closed and a lowered position where the door is opened in the pit with the opening of the vacuum vessel fully opened. It is characterized by that.

  Furthermore, the door opening and closing device for a vacuum device according to the present invention is a building in which the inner floor surface of the vacuum vessel and the vacuum device are arranged on the upper frame when the door is accommodated in the pit. A floor connecting member for connecting to the floor surface is provided, the door suspension means includes a door moving means for moving the door in the axial direction of the vacuum vessel, and the door moving means A door moving means main body fixed to the upper frame, a moving member provided on the door moving means main body so as to be movable in the axial direction of the vacuum vessel, a moving means for moving the moving member, and a moving member provided A suspension member that suspends the door, a door pressing means that presses the lower part of the door toward the opening of the vacuum vessel, the telescopic means or the telescopic column. , To restrict the expansion and contraction of the expansion means or expansion column The shrinkage restricting means is provided, and the telescopic column is inserted into the lower column member fixed to the bottom surface of the pit with a foundation bolt and the lower column member is movable in the vertical direction. An upper column member, and the upper portion of the lower column member is fixed to the upper portion of the pit by a support member.

  According to the door opening and closing device for a vacuum apparatus of the present invention, the door that opens and closes the opening of the vacuum vessel is moved in the vertical direction by extending and contracting the telescopic column, and the door when the opening of the vacuum vessel is opened is placed in the pit. Since the door is housed, the space required for opening and closing the door can be limited to the space provided with the pits and the telescopic columns, so that a significant space saving can be achieved.

  Further, by providing a floor connecting member that connects the inner floor surface of the vacuum vessel and the building floor surface on the upper frame, various equipment can be easily carried into and out of the vacuum vessel. Furthermore, by providing a door moving means for moving the door in the axial direction of the vacuum vessel, the door can be moved smoothly to the side opposite to the opening when the door is opened and closed so that the opening does not contact the door. Can be opened and closed. Further, by pressing the lower part of the door toward the opening of the vacuum container by the door pressing means, the opening of the vacuum container and the door can be brought into contact with each other with certainty.

  Furthermore, the expansion / contraction means or the expansion column is provided with expansion / contraction restriction means, and the door is not prepared by restricting expansion / contraction of the expansion / contraction means or the expansion / contraction column by the expansion / contraction restriction means except when the expansion / contraction means is operated to open / close the door. Can be prevented from falling. Also, by forming the telescopic column with a lower column member fixed at the top and bottom of the pit and an upper column member housed in an expandable state inside the lower column member, the bottom of the pit and the top of the pit The telescopic column can be held, and the mounting strength of the telescopic column can be increased.

It is a front view which shows one example which applied the door opening / closing apparatus for vacuum devices of this invention to the space environment test apparatus. It is a front view which shows the state which similarly opened the door. It is a side view which shows the state which closed the door similarly. It is a side view which similarly shows the state which opens a door and carries in and carries out a test body. It is a cross-sectional side view of the principal part. It is a cross-sectional front view of the principal part.

  As shown in FIGS. 1 to 6, a horizontal space environment test apparatus 10 having an axis line oriented in a horizontal direction includes a horizontal cylindrical vacuum container 11 that accommodates a test body therein, and an opening of the vacuum container 11. A shroud (not shown) cooled by liquid nitrogen is disposed on the inner periphery of the vacuum vessel 11 and the inside of the door, respectively. An evacuation device (not shown) for evacuation is connected so that a simulated outer space can be formed inside the vacuum vessel 11. In addition, flanges 11b and 12a are provided on the outer periphery of the opening 11a and the outer periphery of the door 12 to bring them into close contact via a ring-shaped packing (not shown). Further, in the vicinity of the flange portion 11b on the outer peripheral surface of the vacuum vessel 11, door tightening devices 13 for drawing the flange portion 12a of the door 12 to the flange portion 11b of the vacuum vessel 11 are provided at a plurality of locations in the circumferential direction of the outer peripheral surface. It has been. The vacuum vessel 11 is installed on a base 14a lower than the floor 14 of the building so that the floor 14 and the inner floor 11c of the vacuum vessel 11 are at the same level.

  A pit 15 having a size capable of accommodating the door 12 is provided on the floor surface 14 in front of the opening 11a. Inside the pit 15, there are a fully closed position and a fully opened position of the opening 11a. A portal frame 16 for moving the door 12 in the vertical direction is provided. The portal frame 16 is provided on both sides of the pit 15 in the door width direction, a lower end portion is fixed to the bottom surface 15a of the pit 15 with a foundation bolt 17, and an upper end portion is supported on the upper wall surface 15b of the pit 15. A pair of lower pillar members 16a fixed in the above, a pair of upper pillars 16b inserted into each lower pillar member 16a so as to be movable in the vertical direction, and the pair of upper pillars The upper frame 16c spans the upper end of the member 16b.

  Extending / lowering means (not shown) for raising and lowering the upper column member 16b relative to the lower column member 16a is provided between the lower column member 16a and the upper column member 16b. As the expansion / contraction means, for example, a hydraulic cylinder or a screw-type jack having an operating force, an expansion / contraction stroke and an expansion / contraction speed corresponding to various conditions such as the size and weight of the door 12 and the opening / closing speed can be used. Furthermore, the lower column member 16a and the upper column member 16b are provided with expansion / contraction restriction means 16d for preventing the raised upper column member 16b from dropping unintentionally due to a malfunction of the expansion / contraction means. . As this expansion / contraction regulating means, for example, a fixing means for inserting a fixing pin into a through hole provided in the lower column member 16a and the upper column member 16b can be used. Further, when a hydraulic cylinder is used as the expansion / contraction means, expansion / contraction restriction means for blocking the hydraulic circuit and restricting expansion / contraction of the hydraulic cylinder can also be used.

  At the lower part of the upper frame 16c, door suspension means 20 provided with door movement means 19 for moving the door 12 in the axial direction of the vacuum vessel 11 with the door 12 suspended is provided at a plurality of locations. . The door moving means 19 is accommodated in a box-shaped upper guide member 19a fixed to the lower surface of the upper frame 16c, and the both side plates and the bottom plate of the upper guide member 19a are arranged in the axial direction of the vacuum vessel 11. Side guide holes 19b, 19b and a bottom guide hole 19c, each of which is a long hole, are provided.

  Inside the upper guide member 19a, an upper cylinder 21 provided with a rod 21a that expands and contracts in a direction parallel to the axis of the vacuum vessel 11, and a tip portion of the rod 21a are provided in a horizontal direction perpendicular to the rod 21a. The support shafts 21b, 21b projecting outward from the side guide holes 19b, 19b, the upper end of the support shaft 21b being pivotally supported, and the lower end projecting downward from the bottom guide hole 19c. A pair of guide rollers 21d and 21d that roll on a guide surface 19d that protrudes to the lower side of the upper guide member 19a are provided at both ends of the support shaft 21b. The bracket 12b provided on the upper part of the door 12 is rotatably connected to the lower end of the suspension member 21c via a connecting pin 22 in a direction parallel to the support shaft 21b. . The suspension member 21c and the bracket 12b are connected at a position corresponding to the center of gravity of the door 12, and the door 12 is substantially upright at a position where the distance between the flange portions 11b and 12a is several tens to several hundreds mm, for example, about 100 mm. It is set to be suspended in the state.

  Further, a door pressing means 23 for pressing the lower portion of the door 12 against the opening 11 a of the vacuum vessel 11 is provided at the upper opening edge of the pit 15 opposite to the vacuum vessel 11. This door pressing means 23 is provided at the lower part of the door 12 corresponding to the pressing position of the lower cylinder 23a housed in the lower floor recess 24 provided at the upper opening edge of the pit 15 and the rod 23b of the lower cylinder 23a. And a pressing member 23c provided.

  Further, when the door 12 is housed in the pit 15 with the opening 11a of the vacuum vessel 11 fully opened, the upper opening of the vacuum vessel 11 is covered on the upper frame 16c. A floor connecting member 25 is provided to connect the internal floor surface 11c and the floor surface 14 of the building where the space environment test apparatus 10 is disposed in a flush manner.

  In the space environment test apparatus 10 provided with such a door opening / closing apparatus, the expansion / contraction means is operated to extend the upper column member 16b of the expansion / contraction column in the portal frame 16, and the door 12 is raised to a predetermined rising position. Thus, by setting the door tightening device 13 in the tightened state, both the flange portions 11b and 12a can be brought into close contact with each other so that the opening 11a of the vacuum vessel 11 is sealed with the door 12. Further, the expansion / contraction means is operated with the door tightening device 13 opened, the upper column member 16b of the expansion / contraction column is lowered into a predetermined lower position so as to be inserted into the lower column member 16a, and the door 12 is moved to the pit 15. By making it the state accommodated in the inside, the opening part 11a of the vacuum vessel 11 can be made into a full open state. Thereby, the space required for opening and closing the door 12 can be made only in the portion of the pit 15, and the space efficiency of the building in which the space environment test apparatus 10 is arranged can be improved. In addition, since there is no structure for supporting the door 12 or for moving the door 12 around the door opening and closing device, the floor surface 14 of the building is effectively used as a work space or a space for equipment installation. be able to. Furthermore, by fixing the lower column member 16a in the pit 15 with the base bolt 17 at the lower end and the upper support member 18, the overall strength of the portal frame 16 can be improved.

  In addition, a space for opening and closing the door 12 on the floor surface 14 of the building becomes unnecessary, and the vacuum vessel 11 is installed on a base 14a lower than the floor surface 14 so that the internal floor surface 11c of the vacuum vessel 11 and the floor surface 14 of the building are installed. Since the floor connecting member 25 is provided on the upper part of the upper frame 16c, when the door 12 is stored in the pit 15, the inner floor surface 11c of the vacuum vessel 11 and the building Can be connected flush with each other via a floor connecting member 25, and equipment such as the test body 26 can be easily carried into and out of the vacuum vessel 11 using the carry-in carriage 27. it can. Further, the floor connecting member 25 is installed on the upper part of the gate-shaped frame 16 and moves upward when not in use, so that a space for retracting the floor connecting member 25 on the floor surface 14 of the building is not required. There is no loss of building space efficiency.

  Further, as the door suspension means 20, the door moving means 19 is provided on the upper frame 16 c so that the door 12 is suspended so as to be movable in the axial direction of the vacuum vessel 11. The rod 21a of the cylinder 21 can be shortened so that the flange portions 11b and 12a are separated from each other, the packing provided on the flange portions 11b and 12a and the sealing surface of the flange portion are not damaged, and the door 12 can be moved up and down smoothly. Further, by providing the door pressing means 23 that presses the lower portion of the door 12 against the opening 11a, the door 12 is moved toward the opening 11a by extending the rod 21a of the upper cylinder 21 of the door moving means 19, and the door pressing. Since the lower portion of the door 12 can be moved to the opening 11a side by the means 23, the entire door 12 can be reliably brought into contact with the opening 11a, and the tightening operation of the door tightening device 13 can be easily performed. It can be carried out.

  As the door moving means, a screw jack or a rack and pinion using an electric motor can be used in addition to a cylinder using hydraulic pressure or air pressure. Bolts and nuts can also be used for the door tightening device. . In addition, guide means such as rails can be provided on the inner floor surface of the vacuum vessel, the floor surface of the building, and the floor connection member, and there is a difference in height between the inner floor surface of the vacuum vessel and the floor surface of the building. Can also connect the internal floor surface of the vacuum vessel and the floor surface of the building by making the floor connecting member into a slope shape. Furthermore, a fence that can be opened only at the time of loading / unloading of equipment or inspection around the opening of the pit can be provided. In the case of a space environment test apparatus, piping to the shroud provided on the door can be arbitrarily performed. Furthermore, the present invention can be applied to various vacuum vessels other than the space environment test apparatus.

  DESCRIPTION OF SYMBOLS 10 ... Space environment test apparatus, 11 ... Vacuum container, 11a ... Opening part, 11b ... Flange part, 11c ... Internal floor surface, 12 ... Door, 12a ... Flange part, 12b ... Bracket, 13 ... Door clamping device, 14 ... Floor surface, 14a ... Base, 15 ... Pit, 15a ... Bottom surface, 15b ... Upper wall surface, 16 ... Portrait frame, 16a ... Lower column member, 16b ... Upper column member, 16c ... Upper frame member, 16d ... Extension restriction means, 17 DESCRIPTION OF SYMBOLS ... Foundation bolt, 18 ... Support member, 19 ... Door moving means, 19a ... Upper guide member, 19b ... Side guide hole, 19c ... Bottom guide hole, 19d ... Guide surface, 20 ... Door suspension means, 21 ... Upper cylinder , 21a ... rod, 21b ... spindle, 21c ... suspension member, 21d ... guide roller, 22 ... coupling pin, 23 ... door pressing means, 23a ... lower cylinder, 23b ... rod, 23c ... pressing member 24 ... floor recess 25 ... floor connecting member, 26 ... specimen, 27 ... carriages

Claims (7)

  In a vacuum device door opening and closing device that opens and closes a door provided in an opening of a vacuum vessel having an axis line oriented in a horizontal direction, the door opening and closing device is provided on the front floor surface of the opening and is large enough to accommodate the door. A pair of telescopic columns provided on both sides of the pit in the width direction of the door and extendable in the vertical direction, an upper frame spanned between the upper ends of the pair of telescopic columns, and the upper frame Provided with a door suspension means provided and expansion / contraction means for extending / contracting the pair of expansion / contraction columns at the same time, the pair of expansion / contraction columns including an elevated position where the door can close the opening of the vacuum vessel, and the door A door opening / closing device for a vacuum device, wherein the opening portion of the vacuum vessel is formed to be able to expand and contract with a lowered position stored in the pit with the opening of the vacuum vessel fully opened.   On the upper frame, when the door is housed in the pit, a floor connecting member is provided for connecting the inner floor surface of the vacuum vessel and the floor surface of the building where the vacuum device is disposed. The door opening and closing device for a vacuum device according to claim 1.   The vacuum apparatus door opening and closing device according to claim 1 or 2, wherein the door suspension means includes door moving means for moving the door in the axial direction of the vacuum vessel.   The door moving means includes a door moving means main body fixed to the upper frame, a moving member provided on the door moving means main body so as to be movable in the axial direction of the vacuum vessel, and a moving means for moving the moving member. And a door opening / closing device for a vacuum device according to claim 3, further comprising a suspension member provided on the moving member to suspend the door.   The door opening and closing device for a vacuum device according to any one of claims 1 to 4, further comprising door pressing means for pressing a lower portion of the door toward the opening of the vacuum vessel.   6. The door opening / closing apparatus for a vacuum apparatus according to claim 1, wherein the expansion / contraction means or the expansion / contraction column is provided with expansion / contraction restriction means for restricting expansion / contraction of the expansion / contraction means or the expansion / contraction column.   The telescopic column includes a lower column member fixed to a bottom surface of the pit with a foundation bolt, and an upper column member inserted into the lower column member in a vertically movable state, and the lower column member The door opening / closing device for a vacuum device according to any one of claims 1 to 6, wherein an upper portion of the vacuum device is fixed to an upper portion of the pit by a support member.

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