JPH0643050U - Lid receiving frame for cold regions - Google Patents

Abstract

(57) [Abstract] [Purpose] By forming the brim 3 which is exposed on the upper surface of the lid receiving frame 1 buried on the ground surface into a curved surface, it facilitates snow removal work in cold regions and at the same time, the lid receiving frame is provided. 1 to increase the strength to prevent breakage and damage. [Structure] At least two slopes 3a and 3b are attached to a flange 3 provided on an upper portion of a lid receiving step portion formed in a circular lid receiving frame 1, so that the flange 3 is formed into the lid. It is a lid receiving frame for a cold region, which is formed in a curved curved surface having a gradual downward slope from the upper part of the receiving step portion 2 toward the outer peripheral direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid receiving frame for cold regions, and more particularly to a lid receiving frame in which an upper surface of a brim edge extending in the outer peripheral direction is curved.

[0002]

[Prior art]

 The invention according to Japanese Utility Model Application No. 54-131467 (Japanese Utility Model Application Laid-Open No. 55-44896) discloses that the flange edge extending in the outer peripheral direction of the upper portion of the lid receiving frame is formed horizontally and the outer end portion of the flange edge is slightly permitted. It is bent downward to form a lid receiving frame. Then, an arrow is displayed on the upper surface of the lid receiving frame, an arrow is also displayed on the surface of the lid that fits into the lid receiving frame, and both arrows are made to coincide with each other, so that the underground burying frame installed below the The flow direction of the fluid flowing inside is clearly specified. Thus, a mountain-shaped protrusion is provided on the side end surface of the lid to match the arrow of the lid, and a V-shaped recess into which the protrusion of the lid is fitted is provided on the side end surface of the lid receiving frame. Arrows are displayed at the places where the projections and the recesses are provided, and the projections and the recesses are fitted to each other to prevent the lid from rotating. In addition, the side end surface of the lid receiving frame, the lid receiving step portion, and the back edge of the lid are machined so that the lid is closely fitted to the lid receiving frame.

[0003]

[Problems to be solved by the device]

 Since the top surface of the lid receiving frame (rim) is formed horizontally, the snow on the lid receiving frame (rim) in cold regions is compacted by the passage of vehicles and it is difficult to remove snow. In this regard, since the snow removal plate of the snow removal vehicle rubs against the ground surface, the snow removal plate often collides with the outer edge of the brim and damages the place. Further, although the side end surface of the lid receiving frame is provided with a recess, the side end surface and the lid receiving step can be easily machined without any trouble because there is no protrusion. However, since a protrusion is provided on the side end surface of the lid, machining cost is high to avoid the protrusion and machining is lacking, and the production cost is significantly increased. If the side end surface is not machined, a gap will be created between the lid receiving frame and the lid, causing the lid to slide due to the passage of the vehicle, causing both to wear quickly and the lid to fall below the ground surface. To do.

[0004]

[Means for Solving the Problems]

 The collar edge provided on the upper portion of the lid receiving step portion formed in the circular lid receiving frame is provided with an inclination of at least two or more surfaces, so that the collar edge is removed from the upper portion of the lid receiving step portion. A concave surface that is formed in a curved surface with a gradual downward slope in the circumferential direction, the outer end of which is bent downwardly and the outer projection of the locking rod of the lid fits into the horizontal surface of the lid receiving step. On both sides of the recess, the locking projections to which the projections hung on the lid fit are fitted at a position slightly lower than the horizontal plane of the lid receiving step and at the inner circumference of the step. Provided is a lid receiving frame for cold regions, which protrudes inward from the surface in a centripetal direction, and a protruding portion is vertically provided on the lid receiving frame near the edge portion of the back surface that does not contact with the lid receiving step portion, The locking rod is inserted through the protrusion in the centripetal direction, and the outer protrusion of the locking rod is projected outward to a position in contact with the lid receiving step. By the fitting, to solve the above problems.

[0005]

[Action]

 Therefore, in the lid receiving frame for the cold region having the above-mentioned structure, the upper surface of the brim is curved, so that the snow on the brim is easily peeled off, and the outer end portion is bent downward long. , Even if the snow removing plate of the snow plow hits against it, the place will not be damaged. Furthermore, when the lid receiving frame and the lid are fitted together, the outer protruding portion of the locking rod inserted through the protruding portion on the back surface of the lid slides on the lid receiving stepped portion of the lid receiving frame to rotate while sliding. When the outer protrusion falls into a recess provided in the lid receiving frame, the rotation is prevented, and the lid receiving stepped portion that is machined to form a smooth surface and the lid back surface edge portion and side end surface are closely packed. Fit.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 7, the inner peripheral surface of a circular lid receiving frame 1 made of iron is formed into an L shape to form a lid receiving step portion 2, and the lid receiving step portion 2 is provided with a flange outward from the upper portion thereof. The edge 3 is extended. At this time, the brim 3 is provided with slopes 3a and 3b on its upper surface so that the brim 3 is formed into a curved surface that gradually decreases from the upper portion of the lid receiving step portion 2 toward the outer peripheral direction of the lid receiving frame 1. At the same time, a number of short grooves 14 are concentrically formed on the surface, and an arrow 9 indicating the fluid direction is provided. Further, the outer end portion of the flange 3 is formed by bending downward long. The group of concave grooves 14 on the surface serves as a slip stopper when exposed bare on the ground surface in summer. The horizontal surface 2a of the lid receiving step portion 2 is provided with a recessed portion 6, and locking projections 7, 7 are provided on both sides of the horizontal surface 2a sandwiching the recessed portion 6 in a centripetal direction at a position slightly lower than the horizontal surface 2a. Collide inward. Reference numeral 8 is a reinforcing rib vertically provided on the back surface of the lid receiving frame 1. Then, the entire surface of the lid receiving step portion 2 is machined to form a smooth surface.

A projecting portion 11 is vertically provided near the edge of the back surface of the circular lid 10, and a locking rod 12 made of a bolt is inserted into the projecting portion 11 in a centripetal direction to form an outer projecting portion of the locking rod 12. Between the locking projections 7 and 7 that project 12a outwardly to a length that engages with the recess 6 formed in the lid receiving step 2 and project the projection 11 inward from the lid receiving step 2. By engaging with, it is possible to prevent the lid 10 from rotating and popping out. The protrusion 11 is provided at a position separated from the contact surface between the lid 10 and the lid receiving step portion 2, that is, vertically extending toward the rear edge of the lid (10) and engaged between the locking protrusions 7, 7. It is characterized in that all the contact surfaces of the closing lid 10 and the lid receiving step portion 2 can be machined by being provided at the position to be closed. An antitheft wedge 13 is fixed to the inner protrusion of the locking rod 12, and the other end of the wedge 13 is fixed to a convex portion 18 provided on the back surface of the lid receiving frame 1.

As another embodiment, as shown in FIGS. 8 to 11, the inner peripheral surface of the horizontal surface 2a of the lid receiving step portion 2 is cut into an L shape to form an intermediate lid receiving step portion 2b. To do. A flange 19a is extended to the upper edge of the inner lid receiving step 2b, and a shallow dish-shaped inner lid 19 which is a recessed portion 19a is formed by partially recessing the side wall in the centripetal direction. A pair of L-shaped guide members 20 are erected on the inner bottom surface of the inner lid 19, and a pair of guide rails 20a are provided so as to project in parallel, and a name plate 21 extends over the inner wall surface of the guide member 20 and the guide rails 20a. Insert and remove freely.

As shown in FIG. 12, the inner lid receiving step portion 2b in the above embodiment has a built-in opener gauge for confirming the opening / closing degree of the valve rod 22a of the sluice valve 22 from the ground. It can be used integrally by fitting an opening gauge inner lid 19c formed by vertically arranging the opening gauge unit 23 on its lower surface and connecting the opening gauge drive shaft 24 and the valve rod 22a with a connecting rod 25. . The brim 3 in each of the above-mentioned embodiments has its upper surface formed into a curved surface by the two slopes 3a and 3b, but the number of inclined surfaces forming the curved surface is not limited to this, and it is important to note that It suffices if it is composed of more than one surface. The shape of the inner lids 19 and 19 in the above embodiment is not limited to this, and any shape may be used as long as it can be engaged with the inner lid receiving step portion 2b.

[0010]

[Effect of device]

 As described above, according to the present invention, since the brim 3 is formed by the slopes 3a and 3b into a curved curved surface having a gradual downward slope in the outer circumferential direction, snow is accumulated on the upper surface of the lid receiving frame 1 in a cold region, and Even if the snow passes through and the snowfall is compacted, the snow removal plate of the snow remover can smoothly move from the ground surface to the brim 3 and remove the snow without impacting the lid receiving frame 1 itself. Even if the snow removing plate hits the side surface of the lid receiving frame 1, the outer end surface of the brim 3 which is bent and formed long downward prevents the lid receiving frame 1 from being damaged.

Further, since all the contact surfaces between the lid receiving frame 1 and the lid 10 can be easily formed into a smooth surface by machining, it is economical and the production cost can be reduced. When fitting the lid 10, the outer projection 12a of the locking rod 12 inserted into the projection 11 of the lid 10 slides on the horizontal surface 2a of the lid receiving step 2. After moving, it is recessed in the recess 6 and is fitted tightly in the lid receiving frame 1 accurately at the normal position. Since the outer protrusion 12a remains on the horizontal surface 2a at positions other than the normal position, the two never fit tightly. Further, when the cover is tightly fitted, the protrusion 11 of the closing lid and the engaging protrusions 7, 7 of the lid receiving frame are combined with the concave and convex portions to reliably prevent the closing lid from rotating and popping out, and the contact surface thereof. Since all are machined, there is no gap in the lid and the lid receiving frame, and neither is worn or damaged, and rattling occurs.

Further, when the inner lid 19 is fitted to the inner lid receiving step portion 2b provided on the lid receiving frame 1 and the nameplate 21 is attached to the inner lid 19, the water feeding direction, the type of valve, The opening direction of the valve, the area where the sluice valve 22 operates, etc. can be specified. At this time, since the nameplate 21 is placed on the guide rails 20a, 20a, it can be easily attached / detached to / from the guide members 20, 20, and the face of the nameplate 21 does not come into contact with the inner bottom surface of the inner lid 19, so it should be noted. There is no danger of terms disappearing. When the opening gauge for the opening gauge is attached to the opening gauge inner lid 19c, the valve can be opened and closed from the ground and the valve can be operated easily. It is possible to perform the appropriate valve opening / closing operation without causing insufficient filling. Moreover, when the recessed portion 19b of the inner lid 19 is gripped, the inner lid 19 can be easily attached and detached, and the locking projections 7, 7 are located in the space formed by the recessed portion 19b. Since the chain 13 that locks the lid 10 is hung down, the lid 10 can be completely fitted tightly.

[Brief description of drawings]

FIG. 1 shows a lid receiving frame for a cold region according to the present invention, and FIG.
3 is a sectional view taken along line AA in FIG.

FIG. 2 is a plan view of the same.

FIG. 3 is a bottom view of the same.

FIG. 4 is an enlarged view taken along the line BB in FIG.

FIG. 5 is an enlarged view showing a state in which the outer protrusion is engaged.

FIG. 6 is a cutaway vertical sectional view of an essential part showing a state where a lid and a lid receiving frame are tightly fitted together.

FIG. 7 is a bottom view of the same.

FIG. 8 is a plan view showing another embodiment.

9 is a cross-sectional view taken along the line AA in FIG.

FIG. 10 is a vertical cross-sectional view of a main part showing a state in which an inner lid is fitted to a lid receiving frame.

FIG. 11 is a vertical cross-sectional view of a main part showing a state in which the lid is fitted into the lid receiving frame and the inner lid is fitted below the lid.

[Fig. 12] Fig. 12 shows another example of use of an underground valve chamber in which an opening meter unit is hung on an opening meter inner lid, and a valve rod of a sluice valve and an opening meter drive shaft are connected by a connecting rod. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lid receiving frame 2 Lid receiving stepped portion 2a Horizontal surface 3 Collar edge 3a Tilt 3b Tilt 6 Recess 7 Locking projection 10 Closing lid 11 Projection 12 Locking rod 12a Outer projection

Claims (1)

[Scope of utility model registration request] The collar edge provided on the upper portion of the lid receiving step portion formed in the circular lid receiving frame is provided with at least two slopes so that the collar edge extends from the upper portion of the lid receiving step portion to the outer peripheral direction. A lid receiving frame for cold regions, which is formed on a curved curved surface having a gradual downward slope.