JP2005200905A - Cover of underground structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily lift and close a cover which is in contact with the ground surface with its reverse side up. <P>SOLUTION: The cover of an underground structure is connected to a bearing frame by a hinge or a chain, and is opened by turning the cover by about 180 degrees. The cover has, on its reverse face, a handle and/or an engaging member to be engaged with an opening/closing tool. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an underground structure lid that can be easily closed and then returned to its original position after opening the lid for underground structures such as waterworks or sewers.

  For a lid for an underground structure in which a conventional lid and a frame are connected by a hinge or a chain, when the lid is opened, the lid is lifted with a T-shaped bar 1 shown in FIG. There are two types: a large circular lid with a diameter of 500 mm or more, a small-diameter circular lid that lifts the lid with the burl 1 or a straight bar, and then rotates 180 degrees to open the lid.

  Conventionally, there has been a handle 2 shown in FIG. 1 to make it easier to lift the lid.

Although there has been a conventional attachment with a handle 2 for opening the lid, there has been no attachment with a handle for closing the lid.
JP 2003-193500 A

  As described above, in the iron lid that is rotated 180 degrees to open the lid, when it is rotated 180 degrees, the lid with the handle is placed on the ground surface with the back side up as shown in FIG.

  When closing the lid, if a gap is provided between the ground and the lid with a sleeper or the like, it is easy to insert a hand or a tool and it is easy to close, but if not, have a part of the retaining nut 3 of the handle 2 or The ribs 15 and the peripheral wall 16 of the lid 11 must be picked up and inserted, and hands and tools must be inserted. However, the rib 15 and the peripheral wall 16 have a drop-off gradient that decreases in thickness toward the tip in terms of molding.

  In addition, there is a problem that a bar or other tool is forcibly inserted to damage the pavement surface of the ground or the surface of the iron lid.

  The present invention connects the receiving frame and the lid with a hinge or a chain so that the lid grounded on the ground surface with the lid back side facing upward can be easily lifted and closed. In the underground structure lid that is rotated 180 degrees to open the lid, the lid for the underground structure is provided with a handle and / or a locking tool for the opening / closing tool on the back surface of the lid.

  In addition, the present invention specifically relates to a steel round bar in a cover for an underground structure in which a receiving frame and a lid are connected with a hinge or a chain, and the lid is rotated about 180 degrees to open the lid. The two bent portions are inserted into two through holes formed in the lid so as to be vertically movable, and a gripping member is fixed to the outer ends of both bent portions, and the handle and lid on the lid surface The cover for the underground structure was equipped with a handle that served as both the handle on the back of the lid when the back was turned up by about 180 degrees.

  Further, the present invention specifically relates to a lid for an underground structure in which a receiving frame and a lid are connected by a hinge or a chain, and the lid is rotated by about 180 degrees to open the lid. It was set as the lid | cover for underground structures which made the holding piece protrude from the inner vertical surface.

  Furthermore, the present invention specifically relates to a lid for an underground structure in which a receiving frame and a lid are connected by a hinge or a chain, and the lid is rotated about 180 degrees to open the lid. The lid for the underground structure was further provided with a lock that engages the T-shaped portion of the bar.

  In addition, the present invention specifically relates to a cover for an underground structure in which a receiving frame and a cover are connected with a hinge or a chain, and the cover is rotated by about 180 degrees to open the cover. It was set as the lid | cover for underground structures which installed the holding member to.

  The present invention relates to a lid for an underground structure in which a receiving frame and a lid are connected by a hinge or a chain, and the lid is turned by about 180 degrees to open the lid. Since the lid for the underground structure is provided, the lid grounded on the ground surface with the back side facing upward can be easily lifted and closed.

  The present invention also relates to a cover for an underground structure in which a receiving frame and a cover are connected by a hinge or a chain, and the cover is rotated by about 180 degrees to open the lid, and a steel round bar is bent in a U shape. The bent portions are inserted into two through holes formed in the lid so as to be vertically movable, and a gripping member is fixed to the outer ends of both bent portions, so that the handle on the lid surface and the lid are rotated about 180 degrees. When the back side is up, the lid for the underground structure is equipped with a handle that serves as both the handle on the back side of the lid. Can be lifted and closed.

  Furthermore, the present invention relates to a lid for an underground structure in which a receiving frame and a lid are connected by a hinge or a chain, and the lid is rotated by about 180 degrees to open the lid, from the rib on the lid or the vertical surface inside the outer peripheral wall. Since it is a cover for underground structures with the gripping piece protruding, the cover grounded on the ground surface with the cover back side facing upward can be easily lifted and closed.

  Furthermore, the present invention relates to a lid for an underground structure in which a receiving frame and a lid are connected by a hinge or a chain, and the lid is rotated by about 180 degrees to open the lid. Since the lid for the underground structure is provided with a latch that engages with the T-shaped portion, the lid grounded to the ground surface with the lid back side facing upward can be easily lifted and closed.

  Further, according to the present invention, in a lid for an underground structure in which a receiving frame and a lid are connected by a hinge or a chain, and the lid is rotated by about 180 degrees to open the lid, a gripping member is installed between a pair of ribs on the back of the lid. Since the lid for an underground structure is used, the lid grounded to the ground surface with the back side facing upward can be easily lifted and closed.

  The cast iron lid 11 is provided on a cast iron receiving frame 12 via a hinge 13 so as to be freely opened and closed. On the back surface of the lid 11, a peripheral wall 16 is provided over the entire surface for reinforcement, and ribs 15 are provided in the inside thereof in a bowl shape. The peripheral wall 16 and the rib 15 are provided with a draft that decreases in thickness toward the front end in the molding process. Reference numeral 14 denotes a burl hole of the lid 11.

  A conventional handle 2 of a lid with a handle shown in FIG. 1 has a steel round bar bent in a U-shape as shown in a sectional view of FIG. 1A-A, and both bent portions are perforated in the lid 11. It is inserted into the hole 17 so as to be movable up and down, and the lower end portion thereof is threaded. The nut 3 is welded or screwed into this portion to prevent the handle 2 from being pulled upward. Yes.

  In the present invention, as shown in FIGS. 4 and 5, in order to be able to make a lid that is grounded on the ground surface with the back surface of the lid facing upward as a handle on the back surface of the lid that can be easily lifted and closed. The gripping member 5 is fixed to both bent outer ends of the handle 2 that has been conventionally used. FIG. 4 is a cross-sectional view of the handle portion, and FIG. 5 is a perspective view showing a state in which the back surface is turned up by rolling the lid.

  Instead of the nut 3, a bracket 6 having a screw engraved on its inner surface is screwed to the bent outer end of the conventional handle 2, and both ends of the gripping member 5 are inserted into the through holes 18 of both brackets 6. To prevent it from coming off. In addition, it is possible to prevent the nut from coming off with a nut or welding. If it does in this way, the conventional handle can be used as it is as a handle for the back surface for turning 180 degree | times and returning the lid which turned over to the ground surface in the original position, and closing it.

  Since the bracket 6 at the end of the handle 2 is connected by the gripping member 5, the bracket 6 does not rotate and no measures for preventing the bracket 6 from loosening are required.

  When it is not necessary to remove the handle 2, the bracket 6 is not used and the bent outer end of the handle 2 is welded to the holding member 5, or the bent portion of the handle 2 is extended and bent to form the holding member. it can.

  A gripping piece is provided on the back surface of the lid so that the lid grounded on the ground surface with the back surface at the top can be easily lifted and closed. FIG. 6 is a perspective view of the back surface of the lid.

  When a lid for opening the lid is not attached to the lid and the lid is opened using an opening / closing tool such as a bar, the grip piece 19 is projected from the rib 15 or the peripheral wall 16.

  The gripping piece 19 is formed in a shelf shape that is substantially horizontal and has a width of four or more fingers and the length of the fingers.

  As shown in FIG. 7, in the lid 11 having a bar hole 14 having a structure in which the front end is formed in a T-shape and is opened, a T-shaped portion of the bar 1 is further engaged below the bar hole 14 The retaining b to project is projected inward from the peripheral wall 16.

  When the lid 11 is closed, it is inserted into the locking b that is turned over by turning 180 degrees so that the portion a of the bar 1 is engaged, and the bar 1 is lifted upward until the lid 11 stands upright. It is lowered in the direction of fitting with the frame 12 and closed.

  Since the burl hole 14 is a long hole, the burl 1 can be pulled upward by rotating the burl 1 by 90 degrees when the closing is completed.

  It is safe because the lid 11 can be opened and closed without touching the lid 11.

  As shown in FIG. 8, when the locking wall c is provided at the tip of the locking b, when the lid 11 becomes vertical during opening and closing, even if the burl 1 is loosened, the a part of the burl 1 is removed from the lid 11. Since it does not come off, the safety is further increased than in the case of FIG.

  The bar 1 is inserted so that the a part of the T-shaped part is in the longitudinal direction of the burl hole 14 in the same manner as when the lid is opened, and rotated 90 degrees at the position where the a part reaches the bag part d. The part a enters the bag part d, engages with the locking b, holds the f part of the bar 1 by hand, and can lift the lid 11.

  As shown in FIG. 10, a grip member 20 that connects the ribs 15 is integrally formed on the back surface of the lid 11.

  Further, as shown in FIG. 11, a separate gripping member 21 can be provided between the ribs 15 on the back surface of the lid 11.

It is a two-plane figure with the top view and AA sectional view of the conventional lid for underground structures. It is a perspective view of a receiving frame and a lid with a handle rotated 180 degrees. It is a perspective view of a cover without a handle and a handle rotated 180 degrees. It is sectional drawing of the handle part of this invention. It is a perspective view of the state which rotated the lid | cover of FIG. 4 180 degree | times. It is a perspective view in the state where a grip piece was provided on the back surface of the lid of the present invention. It is a perspective view of the state which provided the latching on the back surface of the lid of the present invention. It is a perspective view of the state which provided the retaining wall and the retaining wall in the lid | cover back surface of this invention. It is a two-view figure with the front view and side view of a bar. It is a perspective view in the state where a gripping member was formed integrally between ribs of the present invention. It is a perspective view in the state where a separate gripping member was provided between ribs of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 ... Receiving frame 11 ... Lid 2 ... Handle 17 ... Through-hole 5 ... Gripping member 19 ... Gripping piece b ... Locking 20 ... Gripping member 21 ... Gripping member

Claims (5)

  An underground structure lid in which a receiving frame and a lid are connected by a hinge or a chain, and the lid is rotated about 180 degrees to open the lid. Object lid.   In the underground structure lid that connects the receiving frame and the lid with a hinge or chain and turns the lid about 180 degrees to open it, the steel round bar is bent into a U-shape, and both bent portions are , Inserted in two through-holes drilled in the lid so that it can move up and down, the gripping member is fixed to the outer ends of both bent portions, the handle and lid of the lid surface turn about 180 degrees, the back side is up A lid for an underground structure with a handle that serves as both of the handles on the back of the lid.   In a lid for an underground structure in which the receiving frame and the lid are connected by a hinge or a chain, and the lid is turned about 180 degrees to open the lid, the gripping piece is protruded from the rib on the back of the lid or from the vertical surface inside the outer peripheral wall. Cover for underground structures.   In a lid for an underground structure in which a receiving frame and a lid are connected by a hinge or a chain, and the lid is rotated by about 180 degrees to open the lid, the T-shaped portion of the bar is further engaged below the bar hole of the lid. A lid for underground structures with a stopper. An underground structure lid in which a receiving frame and a lid are connected with a hinge or a chain, and the lid is rotated by about 180 degrees to open the lid. A lid for an underground structure in which a gripping member is installed between a pair of ribs on the back of the lid .

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