JPH0738248U - Manhole receiving frame and cover for snow removal board measures of snowplows - Google Patents

Abstract

(57) [Abstract] [Purpose] When the snow plow passes over the receiving frame and lid of the manhole, the snow removal plate of the snow removal vehicle is the receiving frame, the seam between the receiving frame and the lid, and the edge of the snow removal plate is damaged by the lid. An object of the present invention is to provide a lightweight receiving frame that can smoothly pass through the receiving frame and the upper surface of the lid without being damaged. [Structure] An outer frame 2 formed integrally with the pedestal 3 is provided substantially vertically inside the pedestal portion 3 of the receiving frame 1. An arcuate surface 5 is formed on the upper end of the outer frame 2 toward the inside, and an inner frame 4 is provided on the inner side of the outer frame 2 in which a mortar-shaped inclined surface 6 is provided. An inclined surface 24 is provided on the outer upper surface of the lid 20. When the lid 20 is applied to the receiving frame 1, the lid 2
The upper surface of 0 is on the same plane as the upper surface 5a of the arcuate surface 5 of the receiving frame 1, and the outer peripheral inclined surface 21 of the inclined surface 24 of the lid 20 is an arcuate chamfered portion of the arcuate surface 5 of the receiving frame 1. It is configured to face 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 When the snow plate of the snow plow travels over the manhole cover, the blade edge of the snow plate is caught by the receiving frame or the gap between the receiving frame and the cover, and the blade is deformed and damaged. The present invention is intended to prevent damage to the cutting edge of the snow removal plate.

[0002]

[Prior art]

 When the asphalt on the road sinks, the conventional manhole cover and receiving frame will rise above the road surface.If the cutting edge of the snow removal plate of the snow plow that progresses collides with the rising surface, the cutting edge will be deformed or damaged. An accident will occur. Although the manhole cover is usually at the same height as the upper edge of the receiving frame, the lid may be tilted due to the vibration of the passing vehicle, dust, and other causes that cause the seam to be misaligned. As a result, part of the outer peripheral upper edge of the lid floats above the inner peripheral upper edge of the receiving frame and an accident occurs as described above. Such a deformed or damaged snow plate has to be replaced, and the cost required for the replacement is enormous.

In order to prevent such damage, for example, as shown in FIG. 3, there is a case where the outside of the receiving frame is formed in an arc shape and the upper surface of the lid is arranged lower than the upper surface of the receiving frame by one step. Even if the road surface sinks, the cutting edge of the snow plate moves along the arc of the outside of the receiving frame, and since it does not contact the top surface of the lid, it can avoid being deformed or damaged due to collision of the cutting edge. However, since there is a gap between the pedestal part and the arcuate part on the outside of the receiving frame, it is difficult to fill the asphalt, and the asphalt subsidence occurs earlier than usual. In addition, since the arcuate portion becomes the product as it is, there is a defect that the weight becomes larger than that of a normal product. Further, since the upper surface of the lid is arranged one step lower than the receiving frame, a shock occurs when a heavy vehicle other than the snowplow passes, and the contact surface between the lid and the receiving frame is abraded by the shock.

[0004]

[Problems to be Solved by the Invention] Even if the asphalt on the road sinks and the lid and receiving frame of the manhole float above the road surface, the blade of the snow removal board of the snow plow does not collide with the receiving frame or lid. Therefore, the blade tip of the snow removal plate of the snow removal vehicle is not damaged, and the huge cost of replacing the snow removal plate due to the damage of the blade edge is prevented, and the gap between the arcuate part on the outside of the receiving frame and the pedestal part is prevented. Eliminates the difficulty of asphalt filling due to the presence of the gap, reduces the weight of the receiving frame by making the arc-shaped part of the receiving frame as it is, and the upper surface of the lid is more than the upper end surface of the receiving frame. The purpose is to eliminate the impact that occurs when a heavy vehicle other than the snowplow passes by being placed low, and to eliminate the abrasion of the contact surface between the lid and the receiving frame due to the impact.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has an outer frame 2 which is formed almost vertically inside the pedestal part 3 of the receiving frame 1 and is integrally formed with the pedestal part 3, and an outer frame 2 having an upper end directed inward. An arcuate surface 5 formed in a circular arc shape, an inner frame 4 provided with a slanting pot-shaped inclined surface 6 integrally and continuously provided inside the arcuate surface 5, and an intersection of the inner frame 4 and the arcuate surface 5. An outer peripheral inclined surface 21 is formed on the outer periphery that fits the arcuate chamfered portion 11 formed on the outer peripheral surface of the receiving frame 1, and the outer peripheral inclined surface 21 is formed on the outer periphery in the vicinity of the intersection with the upper surface 22 of the lid 20 that intersects this inclined surface. The lid 20 is formed with a slanting downwardly inclined surface 24 as it goes, and the upper portion 5a of the arcuate surface 5 of the receiving frame 1 and the upper surface 22 of the lid 20 have the same height, and the slanting downward inclination of the lid 20 is formed. A snow removal plate pair for a snow removal vehicle, characterized in that the outer peripheral inclined surface 21 of the surface 24 is in contact with the arcuate chamfered portion 11 of the receiving frame 1. There is provided a receiving frame and the lid of use manhole.

[0006]

[Action]

 Place the receiving frame 1 on the manhole of the underground structure. Asphalt is placed on the pedestal portion 3 of the receiving frame 1 and the asphalt 40 is filled so that the height of the road surface and the height of the upper portion 5a of the arcuate surface 5 of the receiving frame 1 match. The lid 20 is fitted into the receiving frame 1 so that the upper portion 5a of the arcuate surface 5 of the receiving frame 1 and the upper surface 22 of the lid 20 are aligned with each other, and the outer end 23 of the obliquely downward sloped surface 24 of the lid 20 is made into a circle of the receiving frame 1. The blade edge of the snow removal plate 30 of the snow removing vehicle is provided on the upper surface of the asphalt 40, the upper portion 5a of the receiving frame 1, the arcuate chamfered portion 11, and the slanted downward sloped surface 24 of the lid 20 in opposition to the arcuate chamfered portion 11. Then, the upper surface 22 of the lid 20 is passed. Even if the upper surface of the asphalt 40 is concave, the cutting edge of the snow removal plate 30 goes up along the arcuate surface of the receiving frame 1.

[0007]

【Example】

 FIG. 1 is a perspective view of a receiving frame of the present invention, FIG. 2 is an enlarged sectional view of a part of a fitting portion of the receiving frame and the lid of the present invention, and FIG. 3 is a fitting portion of a conventional receiving frame and the lid. It is an expanded sectional view of a part. In FIGS. 1 and 2, 1 is a receiving frame formed in a circular shape when viewed from above, 2 is a thin-walled outer frame which is formed almost vertically inside the pedestal portion 3 of the receiving frame 1 and integrally formed, and 4 is an outer side. The frame 2 is formed integrally by curving inwardly in an arcuate surface at the upper end of the frame 2, and the inner surface of the frame 2 is integrally provided with a slanted pot-shaped inclined surface 6 that fits with the outer peripheral surface of the lid, which will be described later. A lower end portion 7 of the inner frame 4 is bent toward the inside with a gap 9 between the base portion 3 and the pedestal portion 3 to form a reinforcing portion 8. Reference numeral 5 denotes an arcuate surface formed on the upper end of the outer frame 2 toward the inside, and an arcuate chamfered portion 11 is formed at the intersection of the upper portion 5a of the arcuate surface 5 and the slant-shaped inclined surface 6. Reference numeral 12 denotes a plurality of ribs that connect the arcuate surface 5 and the outer portion of the pedestal portion 3 with a straight line and are integrally formed with an appropriate interval. Reference numeral 13 is a stopper that is provided at the bottom of the receiving frame 1 so as to project.

Reference numeral 20 denotes a lid, the outer peripheral surface of which is provided with an outer peripheral slanted surface 21 that slides with the slanted pot-shaped slanted surface 6 of the receiving frame 1, and the height of the upper surface 22 of the lid 20 is equal to that of the arcuate surface 5 of the receiving frame 1. It is formed at the same height as the upper surface 5a. Further, as the outer peripheral end portion 23 of the lid 20 is moved to the upper surface 22 of the lid 20, a slanting downward sloping surface 24 is formed, for example, 3 ° to 10 ° with respect to a horizontal plane. The end portion of the inclined surface 24, that is, the outer peripheral end portion 23 of the lid 22 is formed in the entire circumference of 20 and has an arc shape connecting the slant-shaped inclined surface 6 of the receiving frame and the upper surface 5a of the arc-shaped surface 5 of the receiving frame 1. It is designed to be tied on the chamfer 11.

Reference numeral 30 denotes a snow removal plate of the snow plow, which is moved in the direction of the arrow in FIG. The asphalt 40 of the road is filled around the receiving frame 1 so as to be equal to the heights of the outer frame 2 of the receiving frame 1 and the upper end surface of the lid 20 and paved. Now, it is assumed that the snow removal plate 30 of the snow blower advances from the right side of FIG. 2 in the direction of the arrow to scratch the snow on the road. Before the snow removal plate 30 reaches the upper surface of the arcuate surface 5a of the outer frame 1 from the surface of the asphalt 40 and further advances to the upper surface of the lid 20, the end portion of the inclined surface 24, that is, the outer peripheral end portion 23 of the lid 23. Will pass through. At this time, since the inclined surface 24 gradually rises inward from the outside of the lid 20, the snow removal plate 30 is guided by the inclined surface 24 and advances toward the central portion of the lid 20. . Since the blade edge of the snow removal plate 30 is not impacted, the blade edge will not be damaged or broken. Further, when the surface of the asphalt 40 sinks, the snow removal plate 30 moves along the arcuate surface 5 of the receiving frame, so that the blade edge of the snow removal plate is not damaged.

Further, since the conventional receiving frame has a recess (gap) on the outer periphery, only the asphalt on the road surface causes the asphalt outside the upper part of the receiving frame to be recessed. Therefore, in order to eliminate this asphalt dent, it is necessary to fill the cavities (gap) in the receiving frame with concrete and drive asphalt onto it. However, in the present invention, since the outer frame 2 of the receiving frame is formed so as to rise almost vertically, the pressure applied to the road surface by the heavy vehicle is applied vertically to the upper surface of the pedestal portion 3 and the concrete is not embedded. However, the asphalt around the receiving frame can bear a large load without denting and is economical. When the snow removing plate 30 moves to the opposite side of the lid 20 and reaches the opposite side of the receiving frame, the cutting edge of the snow removing plate 30 does not catch on the receiving frame because the receiving frame 1 has the arcuate chamfer 11. A smooth transition can be made along the arcuate surface 5.

[0011]

[Effect of device]

 (A) The upper surface of the lid and the upper surface of the receiving frame are arranged on the same plane, and a gentle inclined surface is formed on the outer periphery of the upper surface of the lid, and the end of this inclined surface is formed integrally with the upper part of the outer frame of the receiving frame. The blade edge of the snow removal plate is smoothly guided to the surface of the lid from the arc-shaped curved surface of the receiving frame, and the snow removal plate is also in contact with the circular surface that intersects with the inclined surface of the inner frame of the receiving frame. Since it moves and is smoothly guided from the top surface of the lid to the top surface of the receiving frame, the cutting edge of the snow removal plate will not be deformed or damaged. (B) The outer frame of the receiving frame is formed to rise almost vertically inside the pedestal, and the inner frame is provided inside the outer frame with a gap, so that the outer frame is made thin and lightweight. The construction of manholes is easy and economical because there is no need to bury concrete for reinforcement under the asphalt of roads.

[Brief description of drawings]

FIG. 1 is a perspective view of a receiving frame according to an embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view of a fitting portion between the receiving frame and the lid according to the embodiment of the present invention.

FIG. 3 is an enlarged vertical sectional view of a conventional fitting portion between a receiving frame and a lid.

[Explanation of symbols]

 1 Receiving frame 2 Outer frame of receiving frame 3 Pedestal part of receiving frame 4 Inner frame of receiving frame 5 Circular surface of receiving frame 5a Upper part of circular arc surface of receiving frame 6 Ladle-shaped inclined surface of receiving frame 11 Circular chamfered portion of receiving frame 13 Leg of receiving frame Part 20 Lid 21 Outer peripheral inclined surface of lid 22 Upper surface of lid 23 Outer peripheral end portion of lid 24 Inclined surface of lid

Claims (1)

[Scope of utility model registration request] 1. An outer frame (2) which is formed almost vertically inside the pedestal (3) of the receiving frame (1) and is integrally formed with the pedestal (3), and an arcuate shape which is formed inward at the upper end of the outer frame (2) toward the inside. The surface 5 and the slanted sloping surface 6 integrally and continuously provided inside the arcuate surface 5.
And an arcuate chamfered portion 11 formed at the intersection of the inner frame 4 and the arcuate surface 5, and an outer peripheral slanted surface 21 on the outer periphery that fits into the mortar-shaped slanted surface 6 of the receiving frame 1. The lid 20 is formed with a slanting surface 24 that slopes downward as it goes outward in the vicinity of the intersection with the upper surface 22 of the lid 20 that intersects with this slanting surface. The upper surface 22 of 20
With the same height, and the inclined surface 2 of the lid 20 in an obliquely downward shape.
4. A receiving frame and a lid for a snow removal plate countermeasure manhole, characterized in that the outer peripheral inclined surface 21 of 4 is in contact with the arcuate chamfered portion 11 of the receiving frame 1.