JP2006070692A - Manhole with height adjusting function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manhole with the height adjusting function for shortening work time, by enhancing height adjusting workability of a cover body, while reducing work cost when adjusting the height of the cover body. <P>SOLUTION: A body part of the manhole 10 with the height adjusting function, is composed of mutually threadedly engaging outer pipe 12 and inner pipe 14. Since the outer pipe 12, the inner pipe 14 and the cover body 15 are connected by a connecting bar 25 freely insertable and extractable from the outside, height adjusting work cost of the cover body 15 is reduced without conventionally requiring to prepare a plurality of plate rings when adjusting the height of the cover body. Moreover, this height adjustment can be made by simple work of screwing in and loosening the inner pipe 14 to the outer pipe 12. Thus, the height adjusting workability is improved, and the work time can also be shortened. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a manhole with a height adjustment function, more specifically, for example, when a road is re-paved, if the height of the ground and the lid of the manhole do not match, the height adjustment function can easily adjust the height of both Regarding the attached manhole.

In road re-paving work, the height of the ground and the lid of the manhole (specifically, the height of the upper surface of the lid) may not match after the construction, resulting in a step between the two.
In order to solve this problem, there is a known method of filling the stepped part around the lid with quick-drying mortar and repairing it into a tapered shape so that the height of the ground matches the height of the lid. Yes.
However, this method requires skill. Thus, for example, Patent Document 1 is known as a conventional technique for solving this problem. This is a structure in which a gradient adjusting ring, a T ring, and a flat plate ring are stacked in order on a slanted wall tube of a manhole, and a lid receiving frame is placed and fixed on the flat plate ring. The provided ring protrusion is inserted into a concave ring groove provided on the inner peripheral surface of the gradient adjustment ring, and the height of the lid receiving frame is adjusted by the T ring and the plurality of flat plate rings without using mortar. It is what I did.

JP-A-9-53245

However, Patent Document 1 prepares a plurality of flat plate rings having different thicknesses from the T ring having a protruding rib on the inner peripheral lower surface, and adjusts the height of the cover receiving frame by combining the T ring and the flat plate ring. It was something to be done.
Therefore, when adjusting the height of the manhole cover, it is necessary to prepare a plurality of flat plate rings. As a result, the operation cost for adjusting the height of the lid is high.
In addition, at the time of adjusting the height, the combination of the flat plate ring and the T ring with different numbers of sheets used is changed many times. As a result, the workability of height adjustment was poor, and the workers were forced to work long hours.

It is an object of the present invention to provide a manhole with a height adjustment function that is low in work cost when adjusting the height of the lid, has high workability in adjusting the height of the lid, and can shorten the work time. Yes.
Another object of the present invention is to provide a manhole with a height adjusting function capable of simply and quickly completing the screwing operation between the outer tube and the inner tube.
Furthermore, an object of the present invention is to provide a manhole with a height adjustment function in which earth and sand or the like hardly enter the gap between the inner tube and the outer tube.

  The invention according to claim 1 is characterized in that an inner screw is formed on the inner peripheral side, an outer tube embedded in the soil, an upper opening is disposed in the vicinity of the ground, and the outer screw is screwed to the inner screw. A manhole with a height adjustment function comprising an inner tube having a screw formed on the outer peripheral side and a lid for closing the upper opening of the inner tube, wherein the inner screw has a length direction in the outer tube One or a plurality of outer tube connection holes that are in the tube axis direction are formed, and the outer screw has a length direction in the tube axis direction of the inner tube and is screwed with the inner screw. One or a plurality of inner pipe connection holes that can communicate with the connection hole are formed, and the length direction of the outer peripheral portion of the lid body is the thickness direction of the lid body, and the upper opening of the inner pipe is closed. At the time of lid, one or a plurality of lid body coupling holes that can communicate with the inner pipe coupling hole and the outer pipe coupling hole are formed, and the corresponding lid body coupling holes, The tube connecting hole and the outer tube connection hole, the height adjusting function with a manhole having one or a plurality of connecting rods that are inserted and removed capable inserted into a series.

According to the first aspect of the present invention, when the inner tube screwed to the outer tube buried in the ground is twisted in the removal direction, the position of the lid body with respect to the ground is increased. On the contrary, when the inner tube is twisted in the screwing direction, the position of the lid relative to the ground is lowered. After adjusting the height of the lid in this way, the inner tube connecting hole of the inner tube and the outer tube connecting hole of the outer tube are made to coincide with each other.
Thereafter, the lid is placed on the upper opening of the inner tube. At this time, the lid connecting hole and the inner pipe connecting hole are matched. Then, a connecting rod is inserted into the lid connecting hole, the inner tube connecting hole, and the outer tube connecting hole that are in communication with each other from above. As a result, the lid, the inner tube, and the outer tube are detachably connected.

  As described above, the main body portion of the manhole is constituted by the outer tube and the inner tube screwed to the outer tube, and the lid body, the outer tube and the inner tube can be connected by a connecting rod which can be inserted and removed from the outside. For example, in the past, a plurality of flat plate rings had to be prepared in advance when adjusting the height of the lid, but this is not necessary. Thereby, the work cost at the time of adjusting the height of the lid is reduced. And the height position of a cover body can be adjusted only by performing the simple operation | work of screwing an inner tube with respect to an outer tube, or loosening the screwing. As a result, the workability of adjusting the height of the lid is improved, and the work time can be shortened.

The material of the outer tube and the inner tube is not limited. For example, various kinds of concrete, various kinds of metals including cast iron, various kinds of synthetic resins, various kinds of ceramics, and various kinds of wood may be used.
The size of the outer tube and the inner tube is not limited as long as they can be screwed together.
The inner screw may be formed in the whole area or a part of the inner peripheral side of the outer pipe. Moreover, you may form an external screw in the whole region or the part of the outer peripheral side of an inner tube | pipe.
The outer pipe is buried in the soil, for example, with its upper opening disposed near the ground surface. The inner tube can be arranged, for example, with its upper opening closer to the ground surface than the outer tube.
The material of the lid is not limited. For example, various metals including cast iron can be employed.
The size and shape of the lid are appropriately changed according to the diameter of the inner tube or the inner tube shape. The thickness of the lid is not limited.

Only one inner tube connection hole may be formed on the inner screw, or a plurality of inner tube connection holes may be formed.
Only one outer tube connection hole or a plurality of outer tube connection holes may be formed on the outer screw.
The lid connecting hole, the inner pipe connecting hole, and the outer pipe connecting hole are located above the manhole when the lid is attached to the inner pipe screwed to the outer pipe (outside in the pipe axis direction from the upper opening of the inner pipe). As long as the three holes coincide with each other.
The lid connection hole, the inner tube connection hole, and the outer tube connection hole may have the same diameter or different diameters. However, these must have a diameter through which the connecting rod can be inserted.

The material of the connecting rod is not limited. For example, stainless steel or iron may be used.
The length of the connecting rod only needs to be able to be inserted through the lid connecting hole, the inner tube connecting hole, and the outer tube connecting hole in series.
The number of connecting rods used is changed according to the number of lid body connecting holes, inner tube connecting holes, and outer tube connecting holes to be inserted.

  According to a second aspect of the present invention, in the outer screw, an inner screw insertion notch and a partial outer screw are alternately formed at predetermined intervals in the circumferential direction of the inner tube. The outer screw insertion notch portion through which the partial outer screw is inserted and the partial inner screw loosely inserted into each inner screw insertion notch portion are alternately arranged at predetermined intervals in the circumferential direction of the outer tube. It is the manhole with a height adjustment function of Claim 1 formed.

According to the second aspect of the present invention, when the outer tube and the inner tube are screwed together, the inner tube is first disposed immediately above the outer tube, and each partial internal screw is matched with the corresponding notch for inserting the internal screw. At the same time, the respective external screws are matched with the corresponding external screw insertion notches. Thereafter, the inner tube is gradually lowered while maintaining this state. As a result, the inner tube is inserted into the outer tube. Thereafter, when the inner tube is rotated by a predetermined angle in the circumferential direction, both the tubes are screwed together by both screws.
In this way, the external screw is configured with an internal screw insertion notch and a partial external screw, and the internal screw is configured with an external screw insertion notch and a partial internal screw. When the two pipes are screwed together, it is not necessary to screw the heavy inner pipe into the outer pipe while rotating it many times around its axis. Thereby, the screwing operation of the outer tube and the inner tube can be completed easily and in a short time.

  The partial internal screw and the partial external screw (the same for the external screw insertion notch and the internal screw insertion notch) are, for example, two or more corresponding outer pipes or inner pipes in the circumferential direction. It may be formed as having an equally divided length. However, it is not limited to this, For example, each partial external screw and each partial internal screw may differ in the length of the corresponding pipe in the circumferential direction.

  Invention of Claim 3 is a manhole with a height adjustment function of Claim 1 which had the cover which covers the part which protruded upwards from the upper edge of the said outer pipe among the said inner pipes from the outside. .

  According to the third aspect of the present invention, the portion of the inner pipe that protrudes upward from the upper edge of the outer pipe is covered with the cover from the outside, so that earth and sand enter the gap between the inner pipe and the outer pipe. hard.

The material of the cover is not limited. However, a material that can provide sufficient corrosion resistance and durability even when buried in the soil for a long period of time is preferable. For example, various synthetic resins (vinyl chloride resin, polyethylene, ethylene vinyl acetate copolymer resin, polypropylene, fluororesin, silicon resin, etc.) and various metals (stainless steel, aluminum, etc.) can be employed.
The shape of the cover is not limited. Any shape that covers the portion of the inner tube that protrudes upward from the upper edge of the outer tube from the outside may be used. For example, a sheet shape (including a fabric) or a plate shape may be used. Furthermore, a cylindrical shape may be sufficient and a flat shape may be sufficient.
The cover may be divided in the circumferential direction or the length direction of the inner tube.

  According to the first aspect of the present invention, the main body portion of the manhole is constituted by the outer tube and the inner tube screwed to the outer tube, and the lid body, the outer tube and the inner tube can be freely inserted and removed from the outside. Since it is structured to be connected by a connecting rod, when adjusting the height of the manhole cover, there is no need to prepare a plurality of plate rings as in the conventional case, thereby reducing the work cost of adjusting the height of the cover. It will be cheap. Moreover, the height of the lid can be adjusted by a simple operation of screwing the inner tube into the outer tube or loosening the screw, so that the workability of this height adjustment is good and the work time is shortened. be able to.

  According to the second aspect of the invention, the outer screw is constituted by the inner screw insertion notch and the partial outer screw, and the inner screw is constituted by the outer screw insertion notch and the partial inner screw. At the time of screwing, there is no need to screw the heavy inner tube into the outer tube many times around its axis. Thereby, the screwing operation of the outer tube and the inner tube can be completed easily and in a short time.

  According to the third aspect of the present invention, since the portion of the inner tube that protrudes upward from the upper edge of the outer tube is covered with the cover from the outside, earth and sand enter the gap between the inner tube and the outer tube. Can be prevented.

  Hereinafter, the present invention will be described with reference to embodiments.

1 to 3, reference numeral 10 denotes a manhole with a height adjustment function according to Embodiment 1 of the present invention. The manhole 10 with a height adjustment function has an inner screw 11 formed on the inner peripheral side, and is in the soil. An outer tube 12 to be embedded, an inner tube 14 in which an upper opening is disposed near the ground and an outer screw 13 to be screwed to the inner screw 11 is formed on the outer peripheral side, and an upper opening of the inner tube 14 And a lid 15 for closing.
The outer tube 12 and the inner tube 14 are each manufactured from cast iron or concrete. The lengths of the outer tube 12 and the inner tube 14 are substantially the same.
A flange 16 that provides an anchor effect to the outer tube 12 when the outer tube 12 is buried in the soil is formed on the outer peripheral side of the intermediate portion in the length direction of the outer tube 12. In the flange 16, a total of three bolt holes 16 a for bolting the outer tube 12 to the soil are formed every 120 ° in the circumferential direction of the flange 16. Through each bolt hole 16a, three bolts can be driven into the soil and the outer tube 12 can be firmly fixed to the soil.

  Further, in the entire area of the inner screw 11, an outer screw insertion notch portion 19 into which a partial outer screw 18 described later is inserted and a partial inner screw 20 are inserted every 60 ° in the circumferential direction of the outer tube 12. A total of three are formed one by one alternately. Each partial internal thread 20 is configured by partial internal thread pieces 21 that are arranged at a fixed pitch in the respective pipe axis directions and are arranged in seven stages on the upper and lower sides, and each have a uniform length and a uniform shape. The total number of the internal thread pieces 21 is not limited to seven. One inner pipe connection hole 21 a is arranged at an intermediate portion in the length direction of each partial inner screw piece 21. In addition, although each partial internal thread piece 21 and each partial external thread piece 23 mentioned later may each be helically arrange | positioned, they may be arrange | positioned horizontally. Here, a description will be given of an example in which each partial internal thread piece 21 and each partial external thread piece 23 are horizontally arranged.

A flange 14 a on which the lid 15 is placed is formed in the upper opening of the inner tube 14. The inner pipe connection hole 21a is also formed in the flange 14a every 120 ° in the circumferential direction. However, if the lid body 15 is formed to have a diameter larger than that of the flange 14a, the connecting rod 25 described later can be connected to the lid body coupling hole 15a, The tube connection hole 21a and the outer tube connection hole 23a can be inserted in series.
Further, in the entire area of the outer screw 13, an inner screw insertion notch portion 22 into which a later-described partial inner screw 20 is inserted and a partial outer screw 18 are inserted every 60 ° in the circumferential direction of the inner tube 14. A total of three are formed one by one alternately. Each partial external screw 18 is composed of partial external screw pieces 23 that are arranged at a fixed pitch in the respective pipe axis directions in six upper and lower stages, and each have a uniform length and a uniform shape. The total number of partial external thread pieces 23 is not limited to six. One outer tube connection hole 23 a is arranged in the middle portion of each partial outer screw piece 23 in the length direction.

The lid 15 is made of cast iron. On the outer periphery of the lid body 15, the length direction is the thickness direction of the lid body 15, and when the upper opening of the inner tube 14 is closed, a series of the inner tube coupling hole 21 a and the outer tube coupling hole 23 a is provided. 3 in total are formed at intervals of 120 ° in the circumferential direction of the lid body 15.
A pair of handle storage portions 15b are formed in the central portion on the upper side of the lid 15 so as to be slightly separated from each other. A handle 24 is stored in each handle storage portion 15b so as to be freely inserted and removed. Note that only one handle storage portion 15b and handle 24 may be formed on the lid 15 (FIG. 4). When the lid 15 is removed from the upper end of the inner tube 14 and the manhole 10 with height adjustment function is opened, the handles 24 are pulled out from the handle storage portions 15b, and the lids are gripped by these drawer portions. Lift 15 up.
A stainless connecting rod 25 is inserted into the corresponding lid connecting hole 15a, inner tube connecting hole 21a and outer tube connecting hole 23a so as to be inserted and removed in series. Thereby, the cover body 15, the inner tube | pipe 14, and the outer tube | pipe 12 are integrated so that isolation | separation is mutually possible.

  Further, the manhole 10 with a height adjusting function is provided with a synthetic resin cover 26 that covers the portion of the inner tube 14 that protrudes upward from the upper edge of the outer tube 12 from the outside (FIG. 5). . The cover 26 is composed of a pair of partial covers 26a that are divided into two equal parts in the circumferential direction of the manhole 10 with height adjustment function. The both end covers 26a are fastened to each other at their butted ends by a plurality of connecting screws. The cover 26 makes it difficult for dirt and the like to enter the gap between the outer tube 12 and the inner tube 14.

Next, a construction method of the manhole 10 with a height adjusting function according to the first embodiment of the present invention will be described.
When the outer tube 12 and the inner tube 14 are screwed together, the lid body 15 is first placed in the upper opening of the inner tube 14, the lid body connecting hole 15a and the inner pipe connecting hole 21a are matched, and the outer tube 12 is kept in this state. The inner tube 14 is disposed immediately above the tube 12 so that each partial internal screw 20 and the corresponding internal screw insertion notch 22 are aligned with each other, and each partial external screw 18 and corresponding external screw insertion notch 19. To match. Thereafter, the inner tube 14 is gradually lowered while maintaining this state. As a result, the inner tube 14 is inserted into the outer tube 12.

  Then, when the height of the upper surface of the lid 15 becomes substantially the same as the height of the ground, the inner tube 14 is rotated by 60 ° in the circumferential direction. As a result, the inner tube 14 and the outer tube 12 are screwed together by the outer screw 13 and the inner screw 11 in a state where the partial outer screw pieces 23 and the respective inner screw pieces 21 are hooked. Thereafter, a portion of the inner tube 14 that protrudes upward from the upper edge of the outer tube 12 is covered with an annular cover 26 from the outside. As a result, foreign matter such as earth and sand hardly enters the gap between the inner tube 14 and the outer tube 12.

  In addition, you may perform the mounting of the cover body 15 to the upper side opening part of the inner pipe 14 after this rotation operation | work. However, in that case, it is necessary to determine the height of the upper end surface of the inner tube 14 in advance in consideration of the thickness of the lid 15. At this time, the three lid connecting holes 15a and the corresponding inner pipe connecting hole 21a and outer pipe connecting hole 23a are in communication with each other in plan view. Next, the connecting rod 25 is inserted into each lid connecting hole 15a from above. Thereby, the connecting rod 25 is inserted in series into each of the communicating constituent holes (the lid connecting hole 15a, the inner pipe connecting hole 21a, and the outer pipe connecting hole 23a). As a result, the lid 15, the inner tube 14 and the outer tube 12 are detachably connected, and the height adjustment of the manhole 10 with the height adjusting function is completed.

  In addition, in the case of the construction method of the manhole 10 with the height adjustment function in which each partial external thread piece 23 and each partial internal thread piece 21 were each helically arranged, it was screwed into the outer tube 12 buried in the ground. When the inner tube 14 is twisted (turned) in the removal direction, the position of the lid 15 with respect to the ground increases. On the contrary, when the inner tube 14 is twisted in the screwing direction, the position of the lid 15 with respect to the ground is lowered. After adjusting the height of the lid 15 in this way, the inner tube connection hole 21a of the inner tube 14 and the outer tube connection hole 23a of the outer tube 12 are made to coincide with each other. At this time, the lid connecting hole 15a and the inner pipe connecting hole 21a are matched. Then, the connecting rod 25 is inserted in series into the lid connecting hole 15a, the inner pipe connecting hole 21a and the outer pipe connecting hole 23a that are in communication with each other. As a result, the lid 15, the inner tube 14, and the outer tube 12 are detachably connected.

  Thus, the main body portion of the manhole 10 with the height adjusting function is constituted by the outer tube 12 and the inner tube 14 screwed to the outer tube 12, and the lid body 15, the outer tube 12 and the inner tube 14 are externally attached. Since it can be connected by the connecting rod 25 that can be freely inserted and removed, for example, in the past, when the height of the lid body was adjusted, a plurality of plate rings that had to be prepared in advance are no longer necessary. As a result, the work cost when adjusting the height of the lid 15 is reduced. Moreover, the height position of the lid 15 can be adjusted only by performing a simple operation of screwing the inner tube 14 into the outer tube 12 or loosening the screw. Therefore, the workability of adjusting the height of the lid 15 is improved, and the work time is shortened.

  Further, in the first embodiment, the outer screw 13 having the inner screw insertion notch 22 and the partial outer screw 18 is employed, and the outer screw insertion notch 19 and the partial inner screw 18 are used as the inner screw 11. Since the one having the screw 20 is employed, it is not necessary to screw the heavy inner tube 14 into the outer tube 12 while rotating the heavy inner tube 14 around its axis when the two tubes 12 and 14 are screwed together. Thereby, the screwing operation of the outer tube 12 and the inner tube 14 can be completed easily and in a short time.

The manhole with height adjustment function of the present invention is not limited to the first embodiment, and can be applied to, for example, the manhole 10A with height adjustment function shown in FIG.
In the manhole 10A with height adjustment function, a lower flange 12a that enhances the anchor effect of the outer tube 12 embedded in the soil is provided around the lower end portion of the outer tube 12. The flange 14a is formed with a pair of rod end portion insertion notches 14b at point-symmetric positions around the center line (FIG. 6). Further, an annular edge portion 14 c having substantially the same height as the thickness of the lid 15 is provided on the outer peripheral portion of the flange 14 a at the upper end portion of the inner tube 14. The inner diameter of the annular edge portion 14 c is slightly larger than the diameter of the lid body 15. An annular rubber packing 29 is provided on the upper side of the flange 14a to prevent vibration and noise of the lid 15 placed thereon.

In addition, the base portions of the connecting pins 27 protruding downward from the lid body 15 are connected to the lower side of each handle 24. At the lower ends of both the connecting pins 27, intermediate portions of a horizontal connecting rod 28 for opening and closing the lid for securing the lid 15 to the upper opening of the inner tube 14 are fixed. The length of the horizontal connecting rod 28 is slightly shorter than the length connecting both rod end portion insertion notches 14b. The diameter of the horizontal connecting rod 28 is shorter than the width of the rod end insertion notch 14b.
With this configuration, when the manhole 10A with height adjustment function is to be closed, both ends of the horizontal connecting rod 25 are inserted into the corresponding rod end insertion notches 14b, and then the lid 15 is rotated 90 ° in the circumferential direction. If moved, the upper opening of the inner tube 14 is closed.

It is a front view of the manhole with a height adjustment function which concerns on Example 1 of this invention. It is a top view of the manhole with a height adjustment function which concerns on Example 1 of this invention. It is a top view of the state which removed the cover body of the manhole with a height adjustment function which concerns on Example 1 of this invention. It is a perspective view of the manhole with a height adjustment function which concerns on Example 1 of this invention. (A) It is a front view of the cover which comprises a part of manhole with a height adjustment function which concerns on Example 1 of this invention. (B) It is a disassembled perspective view of the cover which comprises a part of manhole with a height adjustment function which concerns on Example 1 of this invention. It is a disassembled perspective view of the cover body and inner pipe which comprise a part of manhole with a height adjustment function which concerns on Example 1 of this invention. It is a disassembled perspective view of the manhole with a height adjustment function which concerns on Example 1 of this invention. It is a perspective view in height adjustment work by the manhole with height adjustment function which concerns on Example 1 of this invention. It is sectional drawing of the other manhole with a height adjustment function which concerns on Example 1 of this invention.

Explanation of symbols

10, 10A Manhole with height adjustment function,
11 Internal thread,
12 Outer pipe,
13 External thread,
14 Inner pipe,
15 lid,
15a Lid connecting hole,
18 part internal thread,
19 Internal thread insertion notch,
20 partial external screws,
21a Inner pipe connecting hole,
22 Notch for external screw insertion,
23a outer pipe connection hole,
25 connecting rod,
26 Cover.

Claims (3)

An inner pipe formed on the inner peripheral side, and an outer pipe buried in the soil;
An inner tube in which an upper opening is disposed in the vicinity of the ground and an outer screw that is screwed to the inner screw is formed on the outer peripheral side;
A manhole with a height adjustment function comprising a lid for closing the upper opening of the inner tube,
The inner screw is formed with one or a plurality of outer tube connection holes whose length direction is the tube axis direction of the outer tube,
The outer screw is formed with one or a plurality of inner tube connection holes that can communicate with the outer tube connection hole when the length direction is the tube axis direction of the inner tube and screwed with the inner screw.
The outer periphery of the lid can communicate with the inner tube connection hole and the outer tube connection hole when the length direction is the thickness direction of the cover body and the upper opening of the inner tube is closed. One or more lid connecting holes are formed,
A manhole with a height adjusting function having one or a plurality of connecting rods inserted into the corresponding lid connecting hole, inner pipe connecting hole, and outer pipe connecting hole in a removably inserted manner. The outer screw is alternately formed with notches for inserting an inner screw and partial outer screws at predetermined intervals in the circumferential direction of the inner tube,
The inner screw includes an outer screw insertion notch portion through which the partial outer screw is inserted at predetermined intervals in the circumferential direction of the outer tube, and a partial inner screw loosely inserted into each inner screw insertion notch portion. The manhole with a height adjusting function according to claim 1, wherein and are alternately formed.   The manhole with a height adjustment function according to claim 1, further comprising a cover that covers a portion of the inner tube that protrudes upward from an upper edge of the outer tube from the outside.

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