JP4467450B2 - Device for adjusting the position of the hole closing plate for the lid for underground structures - Google Patents

Description

  The present invention relates to a position adjusting device for a closing plate for closing a hole formed at an edge of a lid of an underground structure so as to be openable and closable.

  A lid for an underground structure such as a manhole has a hole commonly referred to as a hand key hole or the like at the edge in order to fit the frame body to close the opening and open the closed lid. Although the hand key hole is a small opening, rainwater or earth and sand will flow in if it is left open, or odor will leak out of the manhole, so that a closing means is provided in the hand key hole to close it. There are various types of closing means. Among them, the one disclosed in Japanese Patent Application Laid-Open No. 2003-129510 has a smooth opening / closing operation of the closing plate, and can close the hole without gaps without interfering with the frame. However, in the field of cast products to which manhole iron covers and frames belong, there is a gap of about 2 to 6 mm between the closing plate and the frame because the variation in product dimensions is about ± 2 mm even in general tolerance of JIS. Is normal. Because of this situation, the keyhole is not completely closed until now.

  On the other hand, in the manufacturing stage, it is inspected whether or not the hand key hole can be closed as per the design drawing by the closing plate, and when correction is necessary, conventionally, the method is such that the closing plate or the lid side attachment portion is shaved and adjusted. Has been taken. If the closing plate is machined, it can be made with high precision, but a significant increase in cost is inevitable. In addition, after the manhole is actually installed on the road surface, etc., the closing plate is struck by tools such as hand keys and burs every time the lid body is opened and closed, and also when the opened lid body is placed on the road surface. Since the impact is received upon hitting, deformation and wear progress, thereby increasing rattling and the movement of the movable part tends to lose smoothness. However, the conventional situation is that there is no means for adjusting or correcting the above-described problem in the conventional closing plate and its mounting structure. On the other hand, there is an example in which occlusive property is required for packing, and since it is made of rubber and has a structure of being attached to the surface of the occlusive plate, there is a problem that it is easy to peel off and must be reapplied each time.

JP 2003-129510 A

  The present invention has been made paying attention to the above points, and the problem is that by adjusting the position of the closing plate that closes the hole of the lid, the gap around the closing plate is eliminated, and rainwater and earth and sand are removed. Is to prevent the inflow of odors and the leakage of odors. Moreover, the other subject of this invention is providing the hole part obstruction | occlusion board position adjustment apparatus of the cover body for underground structures which can be reliably arrange | positioned in the obstruction | occlusion position, without machining the obstruction board. .

In order to solve the above problems, the present invention is, for the position adjustment device of the closure plate which openably closes the hole formed in the edge of the lid of the underground construction, fitting the closed塞板the hole said closure and an upper closed position, in order to movably arranged in between the open position of the lower opening the holes, is attached to the opening and closing movement part to the lower surface side of the lid, one end of the opening and closing movement part for A plate is attached, a position adjusting means is provided at the other end of the opening / closing moving part, the position adjusting means has a frame member, and the frame member is fitted into a pair of holding parts provided on the lower surface of the lid, and The inner end of the frame member has a connecting portion of an adjusting shaft made of a screw, and the adjusting shaft is attached to a support portion provided on the lower surface of the lid, and is moved inward and outward relative to the lid. by either position can contact the frame a outward and frame of the closure plate which is fitted into the hole In which it took measures that inwardly located adjustably provided away.

The apparatus which concerns on this invention is an apparatus which adjusts the position of the obstruction board which obstruct | occludes there about the hole formed in the edge of a cover body. The closing plate is arranged on the lower surface of the lid, and is pushed down by inserting the tool through a hole such as a hand key hole, moved to a position where the hole is opened (open position), and pulled out by pulling out the tool. Move to the position to close the part (closed position). In order to dispose the closing plate between the upper closed position and the lower opening position, the closing plate is attached to one end of the opening / closing moving unit. The opening / closing moving unit is a means that allows the closing plate to move on the lower surface of the lid, but the specific structure may be arbitrary.

  For example, a link member having a closing plate for closing the hole at one end is provided, and two parallel members are pivotally supported at one end of the member, and the two parallel members are covered at the other end. By pivotally supporting the body side member, the closing plate forms a parallel link movable between an upper closed position and a lower open position, and by incorporating a biasing means in the parallel link, A configuration in which the closing plate urges the hole in the closing direction can be employed. Since the parallel link can move the closing plate in parallel, it can be designed to move away from the frame more quickly than in the case of rotational movement in which the closing plate is attached to a member pivotally supported at one point. However, the parallel link is one specific example and is not limited thereto. For example, a member pivotally supported at a single point can be applied to the present invention as the opening / closing movement unit.

  The opening / closing moving part is attached to the lower surface side of the lid at the other end, and the position adjusting means is also provided in the opening / closing moving part. The opening / closing moving part is thus interposed between the closing plate and the lid, and constitutes a part of a member for attaching the closing plate to the lower surface of the lid. Means for urging the closing plate in the direction of keeping the closed state at the closed position where the closing plate is fitted in the hole can be provided. As the urging means of the closing plate, there is an elastic member incorporated so that the closing plate urges the hole in the closing direction by elastic force, or as another urging means, the closing plate is similarly moved in the closing direction. A weight or the like provided in the opening / closing moving unit can be applied so as to be biased.

Since the closing plate closes the hole portion, it is easy to improve the airtightness by eliminating the gap to some extent with the inner wall surface of the hole portion. However, the hole portion has an opening that opens outward. In this opening portion, the outer end of the blocking plate cannot be closed unless it contacts the inner peripheral surface of the frame. On the other hand, when it goes out of the inner peripheral surface of the frame body, it interferes and it is impossible to close the lid itself. Therefore, in the present invention, there is provided position adjustment means that can adjust the size of the gap between the closing plate and the frame, or can be adjusted in a direction that eliminates interference with the frame. The position adjusting means is provided in association with an opening / closing moving unit that disposes the closing plate so as to be movable between an upper closed position and a lower opened position. The position adjusting means adjusts the position of the closing plate together with the opening / closing moving part to the outside or the inside of the hole, and as a specific adjusting method, forward or backward movement with a screw can be used.

  The closing plate has an upper structure that fits into the hole from below, and a lower structure that is located below the hole and is larger than the hole. Between the upper structure and the lower structure, the hole is sealed with a blocking plate. In order to ensure the performance and smooth opening and closing operation, it is possible to take a configuration with packing. As a result, the closing plate can be in contact with the hole formed in the lid and the frame that receives the lid, thereby improving the sealing effect. Further, in order to solve the conventional problems associated with the pasting of the packing, the present invention adopts a configuration in which the packing can be replaced by a mounting means such as screwing so that deterioration due to wear or the like can be dealt with. In the case of the present invention, the closing plate can be appropriately brought into contact with the frame body by the adjusting device, so that the contact between the packing and the frame body due to the opening and closing of the closing plate becomes resistance, and it may be difficult to return to the closed position due to catching. There is. Therefore, in the present invention, a rubber material that enhances the sealing performance is used at the upper portion of the packing that contacts the lower surface of the hole, and a plastic material that is slippery than rubber is used at the lower portion of the packing that contacts the frame body. This is an attempt to improve the best sealing effect and the reliable opening / closing operation of the closing plate. In addition, it is possible to always maintain the best sealing performance by the exchangeable packing configuration.

Since the present invention is configured and operates as described above, the blocking plate can almost completely block the hole portion such as the hand key hole formed in the lid, and the rainwater or the earth and sand. Inflow or odor leakage can be prevented almost completely. Further, according to the hole closing plate position adjusting device for the underground structure lid according to the present invention, it is possible to adjust the position of the closing plate with respect to the hole or the frame body, eliminate the gap, and Since operations such as eliminating interference can be performed easily, it is possible to respond immediately to inspections during the manufacturing stage, and to cope with deformation and increased wear during use by adjustment. In the unlikely event of damage, replace only this device. Thus, the lid can be continuously used, and further, the use of the exchangeable packing has the effect that the sealing performance against the hole can be enhanced and maintained.

  Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. In each figure, the code | symbol 11 has shown the cover body which closes the circular opening of an underground structure, and this cover body 11 is used in combination with the frame body 12, as shown in FIG. 12 is connected with a hinge device comprising a hinge fitting 13 and a hinge receiver 14 so as to be opened and closed, and an underground structure locking device 15 is provided at a position 180 degrees away from the hinge device.

  The device according to the present invention is provided in relation to a radially elongated hole 16 provided to cut inwardly at the edge of the lid 11 at a position 180 degrees away from the hinge device. . The hole 16 is also used to unlock the locking device 15. The hole 16 has a substantially U-shape, and the inner wall surface 17 has a cross-sectional shape sandwiched in a tapered shape upward. The tapered cross section has a step 18 in the middle, and the inner wall surface 17 ′ below the step 18 is wider.

  The closing plate 20 is movable on the lower surface of the lid 11 so as to be movable between an upper closed position where the closing plate 20 is fitted in the hole 16 and a lower open position where the opening is released from the hole 16 and opened downward. Has been placed. The closed position in the illustrated example is represented by a solid line in FIG. 6, and the open position is represented by a chain line in FIG.

  In order to further improve the sealing effect, the closing plate 20 has an upper structure 21 that fits into the hole 16 from below, and a lower structure 22 that has a larger planar shape than the hole 16 at the lower part thereof. The packing 23 is provided on the lower structure. The illustrated packing 23 is attached by fixing means 24 indicated by screws in a state sandwiched between the upper structure 21 and the lower structure 22, and is a portion that contacts the step portion 18 of the hole 16 on the lid side. As shown in FIG. 2, the upper portion 23a is made of a rubber material that enhances sealing performance, and the lower portion 23b is made of a plastic material having a low frictional resistance as a portion that contacts the frame body. As a result, the reliable opening / closing operation of the closing plate 20 and the rainwater / sediment inflow prevention effect and the odor leakage prevention effect can be significantly improved. In the case of illustration, a polyacetal monomer is used as the plastic material to obtain the desired sliding performance.

  The closing plate 20 is provided at one end of the opening / closing moving part 19, and the opening / closing moving part 19 has a configuration composed of parallel links. That is, the lower structure 22 is provided at the outer tip of the link member 25, and the upper structure 21 is attached thereto by fixing means 24 indicated by screws. The link member 25 is composed of a pair of left and right portions, and shaft support portions 26 and 27 are set at two oblique upper and lower portions of the end portion of the link member 25, respectively. The parallel members 28 and 29 are pivotally supported at the respective one end portions. The upper parallel member 28 of the two parallel members 28 and 29 is disposed between a pair of portions shown as a bifurcated structure of the link member 25, and is supported by a shaft member 26b. Reference numerals 26a, 26c, 27a, 28a, and 29a denote shaft holes. The lower parallel member 29 has rises 29c and 29d arranged on both outer sides of the link member 25, and is supported by the projection 27b of the shaft support portion 27 through the shaft hole 27a.

The parallel members 28 and 29 are pivotally supported on the lid-side frame member 30 at the other end, thereby forming a parallel link that allows the closing plate 20 to move between an upper closed position and a lower open position. is doing. Reference numerals 31 and 32 denote shaft support portions at the other end, which are formed on the frame member 30 in order to form parallel links with the shaft support portions 26 and 27 at the one end. Reference numerals 33 and 34 denote shaft support shaft members at the other end. As shown in each drawing, the frame member 30 is pivotally supported on the parallel member 29 by a shaft member 34 and is also pivotally supported on the lid 11 side by an adjustment shaft 39 as will be described later.

  The frame member 30 has a structure in which the side frames 37 and 38 are fitted into the pair of holding portions 35 and 36 integrally provided on the inner lower surface of the hole portion of the lid body 11 from the inside of the lid body to the outside. It is slidably held inward and outward (see FIG. 3). The frame member 30 has a coupling portion 41 of the adjustment shaft 39 on the inner end side, and the adjustment shaft 39 is attached to a support portion 42 provided integrally with the lower surface of the lid body 11. On the other hand, the position of the closing plate 20 can be adjusted by moving inward and outward. The illustrated adjusting method is a screw, the adjusting shaft 39 is a bolt, and the coupling portion 41 is a female screw formed on the frame member 30, and is configured to be fixed at a required position by a lock nut 43. The adjusting shaft 39 and the connecting portion 41 constitute a closing plate position adjusting device 40.

  Further, an urging means 45 is provided in association with the closing plate 20. The illustrated urging means 45 is made of an elastic member shown as a kind of torsion spring, and has an upper shaft provided on the frame member 30 with one end hooked on the protrusions 46 provided on both sides of the link member 25. 33 is rotatably attached at the intermediate portion, and the other end is disposed in contact with the lower surface of the lid 11 in a pressure contact state. This urging means 45 acts to urge the hole 16 in the closing direction, thereby enhancing the sealing effect of the hole 16 by the closing plate 20.

  In the device 40 of the present invention configured as described above, in the case of a right-hand thread, when the adjustment shaft 39 is rotated, for example, to the right, the frame member 30 is attracted to the inside of the hole 16, that is, the inner periphery of the frame body 12. When the opening / closing moving part 19 and the closing plate 20 integrated therewith are moved in the direction away from the surface 47 (the position indicated by symbol i in FIG. 5), and the adjustment shaft 39 is rotated counterclockwise, for example, the right screw has a frame. When the member 30 is pushed, the opening / closing moving part 19 and the closing plate 20 can be moved outwardly from the hole part 16, that is, in a direction in contact with the inner peripheral surface 47 of the frame body 12 (indicated by symbol o in FIG. 5). position). Therefore, by adjusting the position of the closing plate 20, the optimum closing state in which the tip of the closing plate 20 is always in contact with the inner peripheral surface 47 of the frame body 12 can be easily realized in the state where the closing plate 20 is disposed. Once the adjustment is made, the lock nut 43 is locked in place, so that even if the lid 11 is repeatedly opened and closed, it does not move easily. Further, even when the gap is widened due to loosening or wear over time, it is easy to make this zero, and quality control at the manufacturing stage becomes even easier.

  An example of the closing operation for the lid 11 in which the device 40 of the present invention is implemented is shown in FIGS. The closing plate 20 is always pushed upward, that is, in the closing direction by the biasing means 45 in the closed position where the hole 16 is closed, and the possibility of inflow of rainwater or earth and leakage of odor is almost completely achieved. This is prevented (solid line in FIG. 6). When the closing plate 20 is pushed in using tools, the closing plate 20 moves to the open position below the closed position by the movement of the opening / closing moving part 19 formed of parallel links (chain line in FIG. 6). This movement moves the closing plate 20 in parallel from the closed position on the upper outer side to the open position on the lower inner side, and the movement of the frame 12 in contact with and away from the inner peripheral surface 47 is linearly performed. When opening the lid, first insert the T-shaped tip 49 of the tool 48 vertically into the hole 16 and rotate it 90 degrees, and then hook it on the inner corner of the falling part 50 of the lid 11 and pull it upward. (FIG. 7). Further, when the force to open the closing plate 20 is not applied, it is closed by being pushed in the closing direction by the urging means 45, but the packing 23 of the present invention has a small frictional resistance and contacts the inner peripheral surface 47 of the frame 12. Even if it does not get caught, it quickly returns to the state where it stops at the stepped portion 18.

  As described above, according to the present invention, since the closing plate 20 can be accurately brought into contact with the inner peripheral surface 47 of the frame body 12 by adjusting the position, there is no hindrance in opening and closing the lid body 11, and there is no particular notice. There is no such a situation that the frame body 12 is in conflict with and the closing plate 20 is impacted. In the present invention, since the packing 23 is sandwiched between the upper structure 21 and the lower structure 22, there is no fear of peeling due to contact with the inner peripheral surface 47 of the frame body, and the screw of the fixing means 24 is loosened even if worn due to use. Since the packing 23 can be replaced with a new one, the best sealing effect can always be obtained.

The Example of the hole part obstruction | occlusion board position adjustment apparatus of the cover for underground structures which concerns on this invention is shown, A is a perspective view and B is a front view. The exploded perspective view of the thing of FIG. The bottom view of the thing of FIG. 1 similarly. Sectional drawing of the manhole apparatus for underground structures to which this invention apparatus is applied. Operation | movement explanatory drawing of a position adjustment apparatus. Sectional drawing of the pushing-down state of the obstruction board in this invention apparatus. Sectional drawing of the state which rotated 90 degree | times the T-shaped front-end | tip of the tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Cover body 12 Frame body 16 Hole part 17 Inner wall surface 18 part 19 Opening / closing movement part 20 Blocking plate 21 Upper structure 22 Lower structure 23 Packing 25 Link member 26, 27, 31, 32 Shaft support part 28, 29 Parallel member 30 Frame member 33, 34 Shaft member 35, 36 Holding part 39 Adjusting shaft 40 Closing plate position adjusting device 41 Coupling part 42 Supporting part 43 Locking nut 45 Energizing means 46 Protruding part

Claims (3)

A position adjusting device of the closure plate which openably closes the hole formed in the rim of the lid of underground structures, and the upper closed position to fit a closed塞板the hole, the hole to movably disposed in between the open position of the lower opening, it is attached to the opening and closing movement part to the lower surface side of the lid, attached to the closing plate at one end of the closing movement portion, the other end of the opening and closing movement unit The position adjusting means has a frame member, the frame member is fitted into a pair of holding parts provided on the lower surface of the lid, and is attached to the inner end of the frame member. It has a coupling part of the adjustment shaft consisting of screws, and is fitted to the hole by attaching the adjustment shaft to the support provided on the lower surface of the lid and moving it inward and outward relative to the lid this provided a adjustably position of the closure plate inwardly away from possible outside and the frame in contact with the frame Hole closing plate position adjusting device of the underground construction for the lid, wherein. The closing plate has an upper structure that fits into the hole from below, and a lower structure that is located below the hole and is larger than the hole, and can be in surface contact with the lower surface of the hole between the upper structure and the lower structure. 2. The device for adjusting the position of a hole closing plate for a lid for an underground structure according to claim 1, further comprising an appropriate packing. The packing has a layered structure in which the upper part in contact with the lower surface of the hole is made of a rubber material with good sealing properties, and the lower part in contact with the frame body is made of a plastic material with low frictional resistance. The device for adjusting the position of a clogging plate for a hole in a lid for an underground structure according to claim 2, wherein the capping plate is configured to be exchangeable in a state of being sandwiched between the structure and the lower structure.

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