KR101857957B1 - Apparatus and Method for Adjusting Height of a Manhole Frame of a Valve Box - Google Patents

Apparatus and Method for Adjusting Height of a Manhole Frame of a Valve Box Download PDF

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Publication number
KR101857957B1
KR101857957B1 KR1020170108214A KR20170108214A KR101857957B1 KR 101857957 B1 KR101857957 B1 KR 101857957B1 KR 1020170108214 A KR1020170108214 A KR 1020170108214A KR 20170108214 A KR20170108214 A KR 20170108214A KR 101857957 B1 KR101857957 B1 KR 101857957B1
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South Korea
Prior art keywords
frame
lifting device
hole
nut
boss
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KR1020170108214A
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Korean (ko)
Inventor
조동국
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주식회사 서영금속
조동국
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1409—Covers for manholes or the like; Frames for covers adjustable in height or inclination
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/11—Height being adjustable

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The present invention relates to an apparatus and a method for adjusting a height of a manhole frame of a valve box that can allow only one worker to move the manhole frame up and down, thereby improving convenience of working. The apparatus includes a lower frame having a lower side wall of a hollow cylindrical shape and a lower engaging flange formed on a lower end of the lower side wall; an upper frame having an upper side wall received in the lower side wall and an upper engaging flange formed on an upper end of the upper side wall; a lifting boss engaged to the upper engaging flange; a lifting nut engaged to the lower engaging flange; a lifting device having a cap of a polygonal column shape, a cylindrical stem provided below the cap, a ring engaging portion formed on a center of the cylindrical stem, and a stem screw portion provided below the cylindrical stem; an anti-lifting ring fitted to the ring engaging portion of the lifting device and fixed to the lifting device to prevent the lifting device from moving down; a support engaged between the upper and lower engaging portions, wherein a height of the support is able to be adjusted; and a manhole cover engaged to an upper portion of the upper frame. A male thread of one portion of the stem screw portion of the lifting device and a female thread of the lifting nut corresponding to the stem screw portion are left-hand threaded, while a male thread of the other portion of the stem screw portion of the lifting device and a female thread of the lifting nut corresponding to the stem screw portion are right-hand threaded.

Description

Technical Field [0001] The present invention relates to a height adjusting mechanism for adjusting a height of a manhole frame,

The present invention relates to a regulating device and a regulating method for regulating the height of a manhole frame configured to support a manhole cover provided at a manhole entrance on the upper side of a valve chamber embedded in a basement.

It is common to protect facilities such as sewer valves connected to the middle of paths such as sewage pipes buried underground and to put the valve room at a position where the equipment such as the drain valve is installed for the safe and convenient maintenance work of such facilities .

A manhole for allowing an operator to enter and exit the ground is provided on the upper side of the valve chamber. The manhole is generally composed of a manhole cover for opening and closing the manhole and a manhole frame provided on the valve chamber for seating the manhole cover .

The manhole cover needs to be installed so as to coincide with the ground of the road where the packaging is completed for reasons such as safety of the vehicle driving the road. However, it is very difficult to adjust the position of the manhole cover from the design stage to match the ground due to various variables such as the valve chamber size, the depth of the piping such as the upper sewer pipe, and the pavement thickness of the road.

Therefore, it is desirable to configure the height of the manhole cover, that is, the height of the manhole frame, to be adjustable within a certain range when installing the manhole in the valve chamber.

An example of a valve chamber capable of adjusting the height of the manhole frame is disclosed in Patent Document No. 10-0973229 (Patent Document 1).

The valve chamber of Patent Document 1 has a height adjusting device which is interposed between an upper portion of the valve chamber main body and a manhole frame and is interposed between a female screw hole provided in the upper portion of the valve chamber body and a through hole of a flange portion formed outside the upper portion of the manhole frame do.

The height adjusting device rotates the bolt having the hook portion formed to support the flange portion from the lower side of the through hole and the head portion positioned above the flange portion through-hole to move the bolt up and down with respect to the female screw hole, To move up and down.

In addition, a plurality of bolts are provided at the lower ends of the bolts, and the sprockets of the bolts are connected by a chain, so that even if only one of the bolts is rotated, the other bolts can be rotated at the same time, So that the height can be adjusted.

However, the technique disclosed in the above Patent Document 1 has a problem that the construction of the manhole frame is somewhat complicated because of the mechanical structure for lifting and lowering the manhole frame, leading to a cost increase factor. In addition, considering the chain mounting configuration of Patent Document 1 installed on the horizontal plane and a certain degree of deflection that necessarily occurs in the chain, the height adjustment device of Patent Document 1 has a small possibility that the chain is released during operation and becomes inoperable . In addition, when the chain is detached, there is a need to adjust the height of all the bolts to be equal before the chains are joined again, in order to ensure uniformly lifting operation of the manhole frame as a whole.

Further, in the manhole frame having the structure as in Patent Document 1, the space that can be accessed by the operator is required to be provided inside the triangle space formed by the inside of the chain, that is, the chain. As shown in FIG. 2 of Patent Document 1, Such a worker access space must be formed to be considerably smaller than the size of the actual manhole frame. In other words, in consideration of the worker access space, the manhole frame and the manhole cover according to Patent Document 1 must be formed in a considerably large size, which will lead to a considerable increase in the material and cost.

Registered Patent Bulletin 10-0973229 (Notice of July 30, 2010) "Valve room with easy manhole frame height adjustment"

SUMMARY OF THE INVENTION It is an object of the present invention to provide a valve seat manhole frame height adjusting device and a method of adjusting the height of a manhole frame,

It is another object of the present invention to provide a valve seat manhole frame height adjusting device and method of adjusting the height of a manhole frame uniformly upward or downward while adopting a simple structure without fear of failure.

Another object of the present invention is to provide a convenient valve seat manhole frame height adjusting device and a method of adjusting the height of a manhole frame so that the manhole frame can be easily lifted or lowered by a single operator.

Another object of the present invention is to provide a valve seat manhole frame height adjusting device and a method of adjusting the height of a manhole frame to prevent moisture from penetrating through a gap between operating parts provided for a manhole frame up or down operation .

According to another aspect of the present invention, there is provided a valve seat manhole frame height adjusting apparatus comprising: a lower sidewall forming a hollow cylindrical body having a first diameter; A lower frame having a lower engaging flange portion formed by extending and forming two or more even number of nut coupling holes and two or more even number of support lower insertion holes; An upper sidewall having a second diameter capable of receiving the lower sidewall of the lower frame inwardly, a boss insert hole formed to extend radially outward from an upper end of the upper sidewall and corresponding to the nut coupling hole, An upper frame having an upper engaging flange portion formed with a supporter upper insertion hole corresponding to a lower insertion hole of the supporter; A lifting device boss formed in an upper portion of the upper frame so as to be insertable into the boss portion insertion hole of the upper frame and coupled to the boss portion insertion hole and having a lifting device through hole formed therein in the vertical direction; A lifting device nut coupled to the lower engaging flange part by inserting a lower part of the lower part into the nut engaging hole of the lower frame and having a female screw hole formed on an inner surface of the upper side; A cylindrical stem portion extending downward from the cap portion and rotatably coupled to the lifting device through hole of the lifting device boss, a cylindrical stem portion extending downward from the cap portion and formed of a cylindrical stem portion, A lifting device including a ring engaging portion formed in a shape of a depression along the circumference at one side of the center, and a stem thread portion extending downward from the cylindrical stem portion and having a male screw thread engaging with a female screw thread of the lift nut; And a lowering preventing ring formed to be larger than an inner diameter of the boss insert hole of the upper frame and larger than an inner diameter of the riser through hole of the riser boss, ; A lower frame and a lower frame of the upper frame, and a lower end and an upper end of the upper frame, respectively, And a cap hole that is larger than an outer diameter of the cylindrical stem portion of the lifting device and is smaller than an outer diameter of the fall preventing ring so as to correspond to the boss portion insertion hole, and a manhole cover coupled to the upper side of the upper frame Wherein the male thread of the stem of the elevating device and the female thread of the lift device nut corresponding to the stem of the elevating device are formed as left threads and the female thread of the stem of the remaining part of the lifting device and the corresponding female thread of the lifting device nut are raised Respectively.

At this time, the screw cover may be coupled to the lower end of the lifting device boss and accommodate the lifting device nut on the inner side.

The upper support is formed of male threads over the entire length of the upper support, and the lower support is formed at an upper end of the upper support to support the upper support of the upper frame, Wherein the lower support member comprises an upper support member engaging portion formed with a female screw and an upper support member penetrating portion coupled to a lower end of the upper support member engaging portion and extending downwardly and having a larger diameter than the upper support member, And a coupling step formed to be inserted into a lower insertion hole of the lower frame of the lower frame by being embedded inwardly along the circumference at the lower end of the upper support bar penetration part.

Further, a support bolt hole penetrating between the radially outer side and the inner side of the upper support coupling portion and having a female screw hole is formed; And a support bolt screwed to the support bolt hole to press the upper support bar so that the upper support bar and the lower support bar are fixed to each other in a length-adjusted state.

A packing groove recessed along an outer periphery of the lower sidewall at an upper side of the lower frame; And a watertight packing inserted into the packing groove and contacting the inner surface of the upper frame to form a watertight connection between the lower frame and the upper frame.

According to another aspect of the present invention, there is provided a valve seat manhole frame height adjusting apparatus comprising: a hollow cylindrical lower sidewall; and a radially outwardly extending portion formed at a lower end of the lower sidewall, A lower frame having a lower engaging flange portion; An upper frame having an upper sidewall formed to receive the lower sidewall of the lower frame inwardly and an upper engagement flange extending radially outward from an upper end of the upper sidewall; A lifting device boss having an upper portion inserted into the boss portion insertion hole formed in the upper engaging flange portion of the upper frame and coupled to the lower frame portion from the lower side and having a lifting device through hole formed therein in the up and down direction; A lifting device nut having a lower end coupled to the lower engaging flange portion of the lower frame and having a female screw thread formed on an inner surface of the upper side; A cylindrical stem portion extending downward from the cap portion and rotatably coupled to the lifting device through hole of the lifting device boss, a cylindrical stem portion extending downward from the cap portion and formed of a cylindrical stem portion, A lifting device including a ring engaging portion formed in a shape of a depression along the circumference at one side of the center, and a stem thread portion extending downward from the cylindrical stem portion and having a male screw thread engaging with a female screw thread of the lift nut; And a lowering preventing ring formed to be larger than an inner diameter of the boss insert hole of the upper frame and larger than an inner diameter of the riser through hole of the riser boss, ; A lower frame coupled to the lower frame and a lower frame coupled to the upper frame; And a cap hole that is larger than an outer diameter of the cylindrical stem portion of the lifting device and is smaller than an outer diameter of the fall preventing ring so as to correspond to the boss portion insertion hole, and a manhole cover coupled to the upper side of the upper frame Wherein the male thread of the stem of the elevating device and the female thread of the lift device nut corresponding to the stem of the elevating device are formed as left threads and the female thread of the stem of the remaining part of the lifting device and the corresponding female thread of the lifting device nut are raised Respectively.

According to another aspect of the present invention, there is provided a method of adjusting a height of a manhole frame, which is composed of an upper frame and a lower frame and is fixed to an upper side of a valve chamber, includes a lower cylindrical sidewall and a lower sidewall Fixing a lower frame having a lower engaging flange portion formed to extend radially outward to a position of a manhole at an upper side of the valve chamber; A raising device nut formed by a right screw is fixed to a left side of a worker and a raising device nut is fastened to a work device by a raising device formed on the right side of the worker, Securing the nut; Fitting a watertight packing for watertight coupling between the lower frame and the upper frame into a packing groove recessed from the upper side of the lower frame along the outer periphery of the lower side wall; An upper sidewall formed to receive the lower sidewall of the lower frame inwardly, an upper engagement flange portion extending radially outward from an upper end of the upper sidewall, And a screw cover which is coupled to a lower side of the upper engaging flange portion and can receive the lifting device nut on the inner side, Coupling the upper frame to the lower frame; A cylindrical stem portion extending downward from the cap portion and rotatably coupled to the lifting device through hole of the lifting device boss, a cylindrical stem portion extending downward from the cap portion and formed of a cylindrical stem portion, A ring engagement portion formed at one side of the circumference of the ring-shaped engagement portion, and a stem thread portion extending downward from the cylindrical stem portion and having a male screw portion engaged with a female screw thread of the lift- Coupling an anti-lowering ring formed by dividing the outer ring into two parts, the outer diameter of which is smaller than the inner diameter of the boss insertion hole of the upper frame and is larger than the inner diameter of the lifting device through hole of the lifting device boss; The lifting device is inserted into the lifting device nut from above through the boss insert hole and is coupled to the lifting device nut while the lifting device formed by the right screw is engaged with the lifting device nut located on the left side of the worker, Combining the raised riser; A step of integrally assembling a manhole cover integrally formed on the upper side of the upper frame, the cap having a cap through hole larger than an outer diameter of the cylindrical stem portion of the lifting device and smaller than an outer diameter of the fall prevention ring, Rotating the lifting device on the left side of the worker in a counterclockwise direction and the lifting device on the right side of the worker in a clockwise direction by raising the manhole cover by simultaneously rotating the two lifting devices using both hands by an operator; When the manhole cover is raised to a predetermined position, the length of the two support rods, which are formed so that the lower end portion and the upper end portion can be coupled to the lower engagement flange portion of the lower frame and the upper engagement flange portion of the upper frame, To be supported; And releasing the coupling of the manhole cover integrally coupled to the upper frame to be detachable from the upper frame.

In this case, the support base is composed of an upper support having a male thread formed thereon and a lower support having a female thread formed to engage with the male thread, wherein the upper support has a male thread over its entire length, And an upper protruding engaging portion protruded to be inserted into the inserting hole, wherein the lower supporting strap includes an upper supporter coupling portion formed with a female screw hole, and an upper supporter coupling portion coupled to a lower end of the upper supporter coupling portion, And a coupling stepped portion formed to be inserted into a lower insertion hole formed in the lower engagement flange portion by being recessed inward along the circumference at the lower end of the upper support bar penetration portion.

According to the valve seat manhole frame height adjusting device and the adjusting method of the present invention, since the size of the manhole frame and the size of the space available for the actual manhole entrance / exit by the operator do not substantially differ, Can be greatly reduced.

In addition, since the manhole frame can be lifted or lowered by only one operator, the operation is convenient and the cost is also reduced.

Further, the structure of the manhole frame height adjusting device is simple, so there is no fear of failure, and a separate adjustment work is not required to make the manhole frame uniformly rise or fall down.

Furthermore, by providing a seal suitable for the clearance between the operating portions for the manhole frame lifting operation, it is possible to prevent the contamination of the inside of the valve chamber due to external moisture infiltration.

1 is a schematic view showing a state in which a valve chamber manhole frame height adjusting device according to the present invention is coupled to an upper side of a valve chamber.
FIG. 2 is a vertical sectional view (A), a cross-sectional view (B), and a front view (C) of the AA line, showing a state in which the valve chamber manhole frame height adjusting device according to the present invention is assembled.
3 is a partial plan view (A) and a longitudinal sectional view (B) of a lower frame of a valve chamber manhole frame height adjusting device according to the present invention.
4 is a partial plan view (A) and a longitudinal sectional view (B) of the upper frame of the valve chamber manhole frame height adjusting device according to the present invention.
FIG. 5 is a vertical sectional view (A) of the elevation device and the lift device nut of the valve chamber manhole frame height adjusting device according to the present invention, a front view and a plan view of the elevating device, and a front view and a plan view of the anti- C).
6 is a longitudinal sectional view of a support of a valve chamber manhole frame height adjusting device according to the present invention.
7 is a view illustrating a method of adjusting the height of a manhole frame of a valve chamber according to an embodiment of the present invention.
Fig. 8 shows a method of operating the lifting device for lifting the manhole frame in Fig. 7 (g).

Hereinafter, a valve seat manhole frame height adjusting device according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing a state in which a valve chamber manhole frame height adjusting device according to the present invention is coupled to an upper side of a valve chamber.

A manhole frame 40 according to the present invention is provided on one side of an upper portion of a valve chamber 10 having an inflow pipe 20 and an outflow pipe 30 to be connected to a facility (not shown) A manhole frame height adjusting device 50 is provided. The illustrated manhole frame height adjuster 50 is shown in a partially broken-away section so that its interior is visible.

FIG. 2 is a vertical cross-sectional view (A), a cross-sectional view (B), and a front view (C) taken along line A-A of FIG. 2 showing a state in which the valve seat manhole frame height adjusting device according to the present invention is assembled.

The manhole frame 40 included in the valve chamber manhole frame height adjusting device 50 according to the present invention includes a lower frame 100 coupled to one side of the upper portion of the valve chamber 10, And an upper frame 200 which is made of a metal.

The manhole frame height adjusting device 50 according to the present invention adjusts the height of the manhole frame by adjusting the interval between the lower frame 100 and the upper frame 200 in addition to the lower frame 100 and the upper frame 200. [ And a lifting device (310) and a lifting device (330). Further, the manhole cover 500 further includes a support base 400 for stably supporting the height-adjusted manhole frame 40. The manhole cover 500 also constitutes a part of the valve chamber manhole frame height adjuster 50 according to the present invention do.

3 is a partial plan view (A) and a longitudinal sectional view (B) of a lower frame of a valve chamber manhole frame height adjusting device according to the present invention.

The lower frame 100 includes a lower side wall 110 and a lower engagement flange portion 130. The lower sidewall 110 is formed of a hollow cylindrical body having a first diameter.

The lower coupling flange portion 130 is formed to extend radially outward from the lower end of the lower sidewall 110. [ The lower coupling flange 130 may include two or more than two nut coupling holes 133 into which a lift device nut 310 to be described later is inserted and coupled. In addition, two or more support base lower insertion holes 135 into which the lower end of the support base 400 described later is inserted may be provided in an even number.

Although two nut coupling holes 133 are shown in the illustrated embodiment, two or more nut coupling holes 133 may be provided depending on the size of the manhole cover 500. However, the manhole frame 40 and the manhole cover 500 and the method of adjusting the height of the manhole frame according to the present invention as will be described later. Although two support holes 135 are shown, two or more support holes may be provided for the same reasons as those of the nut coupling holes 133. In this case, the support holes are preferably provided in an even number.

In order to stably support the manhole cover 500, it is preferable that the nut coupling holes 133 are disposed at positions opposite to each other with respect to the center of the lower frame 100 in pairs. However, in the case where the nut coupling holes 133 are four in number, for example, even if the two nut coupling holes 133 are not aligned at two opposite positions, all four are appropriately dispersed along the periphery of the lower frame 100, It may be possible to sufficiently stably support the support member 500. The same can be applied to the lower insertion hole 135 of the support.

The lower frame 100 may further include a packing groove 139 formed at an upper side of the lower frame 100 so as to be recessed along an outer periphery of the lower side wall 110. Tight packing 150 such as an O-ring is inserted into the packing groove 139 and the watertight packing 150 inserted into the packing groove 139 of the lower frame 100 is inserted into the inner space of the upper frame 200 Tightly coupled between the lower frame 100 and the upper frame 200 by being in contact with the side surfaces.

4 is a partial plan view (A) and a longitudinal sectional view (B) of the upper frame of the valve chamber manhole frame height adjusting device according to the present invention.

The upper frame 200 includes an upper side wall 210 and an upper engagement flange 230. The upper sidewall 210 is formed to have a second diameter capable of receiving the lower sidewall 110 of the lower frame 100 having a first diameter inward. That is, the second diameter is larger than the first diameter.

The upper coupling flange 230 is formed to extend radially outward at the upper end of the upper sidewall 210. The upper coupling flange portion 230 includes a boss portion insertion hole 233 provided corresponding to the nut coupling hole 133 and a supporter upper insertion hole 235 corresponding to the supporter lower insertion hole 135 do. Here, " provided to correspond " is used to mean " provided in a number corresponding to the corresponding position ", and is used throughout this specification in the same sense.

The lifting device boss 250 is coupled to the lower side of the boss unit insertion hole 233. The elevating device boss 250 is formed such that an upper part thereof is insertable into the boss insertion hole 233 of the upper frame 200 from below and is coupled to the boss insertion hole 233. That is, the lifting device boss 250 is composed of an upper portion having an outer diameter that can be inserted into the boss portion insertion hole 233 and a lower portion that is not insertable into the boss portion insertion hole 233. A lifting device through hole 253 is formed in the upside of the lifting device boss 250 so that the lifting device 330, which will be described later, can be inserted.

In addition, a screw cover 340 can be coupled to the lower end of the lifting device boss 250 to receive the lifting device nut 310, which will be described later. This will be described later.

FIG. 5 is a vertical sectional view (A) of the elevation device and the lift device nut of the valve chamber manhole frame height adjusting device according to the present invention, a front view and a plan view of the elevating device, and a front view and a plan view of the anti- C).

The lifting device nut 310 and the lifting device 330 are a core structure of the valve chamber manhole frame height adjusting device 50 according to the present invention together with the lower frame 100 and the upper frame 200, Thereby adjusting the height of the base 40. [

First, the lift device nut 310 is coupled to the lower engagement flange portion 130 by inserting a lower portion of the lift device nut 310 into the nut engagement hole 133 of the lower frame 100. The lifting device nut 310 has an inner surface on one side of the upper surface thereof formed with a female screw thread engaging with a stem screw portion 337 of a lifting device 330 described later. This portion is referred to as a nut portion 313. The lifting device nut 310 also has a stem thread passing portion 315 extending downward from the nut portion 313. The stem thread passing portion 315 is formed in a hollow cylindrical shape and is a portion through which the stem thread portion 337 to be described below which is moved down by being rotated by engaging with the nut portion 313 is passed. The stem thread passing portion 315 guides the stem thread portion 337 It protects at the same time.

The lifting device nut 310 may be configured to be simply press-fitted into the nut coupling hole 133, but may be inserted into the nut coupling hole 133 for a more rigid coupling, 130, respectively. Although the female screw thread inside the upper portion of the lift nut 310 is shown as being formed at the upper end portion, it may be formed below the upper end portion. In this case, the height adjustment range of the valve chamber manhole frame height adjuster according to the present invention may be somewhat reduced have.

The lifting device 330 includes a cap portion 331, a cylindrical stem portion 333, and a stem thread portion 337 from above. The cap portion 331 is a portion rotated by the tool such as a wrench or a wrench used by an operator to rotate the lifting device 330 as a whole. The cap portion 331 may be formed as a polygonal column, specifically, a square column, a hexagonal column, or an octagonal column so that the cap 331 can be engaged with a tool such as a spanner or a wrench. In this case, for the sake of safety of the operator, the cap portion 331 may be formed in a shape in which the corner of the polygonal shape is trimmed. For example, the corner portion of the square cap 331 may be chamfered to reduce edge sharpness In this case, the shape of the cap portion 331 will be similar to the octagonal columnar shape.

The cylindrical stem portion 333 is formed to extend downward from the cap portion 331. When the lifting device 330 is inserted into the lifting device boss 250, And is a portion rotatably coupled to the through hole 253. The cylindrical stem portion 333 may include a ring-shaped coupling portion 335 formed at one side thereof in the vertical direction, the ring-shaped coupling portion 335 being recessed along the circumference of the cylindrical stem portion 333. The ring coupling portion 335 is engaged with a fall prevention ring 350 to be described later.

The stem thread portion 337 extends downward from the cylindrical stem portion 333 and is integrally formed with a male threaded portion that engages with the female threaded portion of the lifting unit nut 310.

As described above, the anti-falling ring 350 is fitted in the ring coupling portion 335 of the lifting device 330 and is coupled to the lifting device 330. [ The lowering prevention ring 350 has an outer diameter smaller than an inner diameter of the boss insertion hole 233 of the upper frame 200 and larger than an inner diameter of the riser through hole 253 of the riser boss 250 . Therefore, when the lifting device 330 is inserted into the boss unit insertion hole 233 from above, the falling prevention ring 350 is inserted into the boss unit insertion hole 233, and the lifting unit through hole 253 So that it stays above the lifting device boss 250. This means that the downward movement of the lifting device 330 coupled with the lowering preventing ring 350 is limited to a position where the lowering preventing ring 350 is in contact with the upper surface of the lifting device boss 250.

The fall preventing ring 350 may be formed in such a manner that the ring is relatively easily joined and separated by elastic deformation of the ring itself, such as a snap ring. However, it is preferable that the fall preventing ring 350 is formed to have a proper thickness and has a sufficient strength so as not to be damaged even by an unexpected load which may be applied to the lifting device 330. In this case, the lowering preventing ring 350 is not easily deformed elastically, unlike the snap ring. Therefore, in order to be easily coupled to the ring fitting portion 335 of the lifting device 330, It is preferable that it is formed into a two-part structure divided into two parts.

The lifting device 330 formed as described above allows the operator to rotate the cap portion 331 by using the tool so that the stem thread portion 337 rotates in engagement with the nut portion 313 of the lifting device nut 310, The lifting device 330 is lowered or raised so that the upper frame 200 of the manhole frame 40 is lowered or raised with respect to the lower frame 100.

However, in order to adjust the height of the manhole frame 40, the manhole cover 500 must be integrally coupled to the upper side of the upper frame 200. The manhole cover 500 has a cap through hole 510 that is larger than the outer diameter of the cylindrical stem portion 333 of the lifting device 330 and smaller than the outer diameter of the fall preventing ring 350 to correspond to the boss portion insertion hole Respectively. The lowering preventing ring 350 of the lifting device 330 can be forced to stay in the boss insertion hole 233 only when the manhole cover 500 is integrally coupled to the upper frame 200, When the lifting device 330 is lifted or lowered, the upper frame 200 may also be raised or lowered together.

When the manhole cover 500 is not integrally coupled to the upper frame 200, the upper frame 200 always moves down regardless of the position of the lifting device 330, so that the lifting device 330 The upper frame 200 will not be raised together but will be moved downward to remain in the lower frame 100 in a collapsed state.

Coupling the manhole cover 500 to the upper frame 200 may be effected by one or more lid bolts (not shown), and for this purpose, one or more (Not shown), and a manhole cover 500 may be provided with a frame engaging hole (not shown) to correspond to the lid engaging female engaging portion. The lid-engaging female threaded portion may be formed as a nut (not shown) welded to the lower side of a lid fitting hole (not shown) formed on one side of the upper engaging flange portion 230, for example.

However, in order to make the manhole cover 500 openable and closable after the height adjustment is completed, the cover bolt must be removed. Since the manhole frame 40 can be stably supported when the support block 400 is installed as described later after the height adjustment of the manhole frame 40 is completed, even if the cover bolt is removed after the support block 400 is installed, The frame 200 and the manhole cover 500 are not lowered but are fixed at a height-adjusted position, and the manhole cover 500 can be opened and closed.

Alternatively, when the manhole cover 500 is coupled to the upper frame 200 as described above, the manhole cover 500 may be provided with a coupling lid (not shown) formed in an annular shape and a radially inner Closing lid (not shown).

The coupling lid is a portion that is coupled to the upper engagement flange portion 230 of the upper frame 200 by the lid bolt as described above, and the opening / closing lid is a portion formed to be openable / ). ≪ / RTI > In order to support the opening / closing lid, an opening / closing lid support (not shown) may be provided along the entire circumference or a part of the radially inner side of the coupling lid. The opening and closing lid support portion may be formed as a supporting step (not shown) formed to extend radially inward from the radially inner bottom surface of the coupling lid, for example.

When the manhole cover 500 is manufactured by separating the manhole cover 500 from the coupling lid and the opening and closing lid, it is possible to open and close the manhole cover 500 without removing the lid coupling bolt.

The lifting device 330 and the lifting device nut 310 that are arranged to mesh with each other may be formed by a right screw or a left screw so that the screw thread portion 337 and the nut portion 313 are screwed to each other have. In the manhole frame 40 according to the present invention, when two lifting devices 330 and two lifting device nuts 310 are provided, one should be provided with a right screw and the other with a left hand screw. This structure facilitates the manhole frame lifting operation, and details thereof will be described later.

However, in the case where four lifting devices 330 and three lifting device nuts 310 are provided, for example, two right hand screws and two left hand screws are provided, The combination of the lifting device nuts 310 is not necessarily provided with a right screw on one side and a left screw on the other side. In this case, the right-hand thread lifting devices 330 are opposed to each other and the left-hand thread lifting devices 330 are opposed to each other on the assumption that two workers work in a confronted posture Is more advantageous in terms of work efficiency.

As described above, the screw cover 340 can be coupled to the lower end of the lifting device boss 250 to receive the lifting device nut 310. When the screw cover 340 is engaged with the screw cover 340, It is possible to prevent foreign substances such as dust and soil from flowing into the lifting device 330 and the lifting device nut 310 to prevent corrosion due to moisture inflow and prolong the service life.

6 is a longitudinal sectional view of a support of a valve chamber manhole frame height adjusting device according to the present invention.

The lower end and the upper end of the supporter 400 are respectively inserted into the supporter lower insertion holes 135 of the lower frame 100 and the upper supporter upper insertion holes 235 of the upper frame 200 to be coupled. The height of the manhole frame 40 can be adjusted by adjusting the length of the manhole frame 40 so that the height of the manhole frame 40 is adjusted between the lower frame 100 and the upper frame 200, The frame 40 can be stably supported.

The support base 400 includes an upper support 410 having a male thread and a lower support 430 having a female thread to engage with the male thread.

The upper support 410 has an upper projecting engaging portion 413 formed at an upper end of the upper frame 200 so as to be inserted into the upper support hole 235 of the upper frame 200.

The lower support member 430 includes an upper support member coupling portion 433 having a female screw hole and an upper support member penetration portion 433 formed at a lower end of the upper support member coupling portion 433 and extending downwardly and having a larger diameter than the upper support member 410 435). The lower end of the upper support arm penetration part 435 is provided with a coupling stepped part 437 which is formed to be embedded inwardly along the periphery to be inserted into the lower insertion hole 135 of the support frame of the lower frame 100.

The support frame 400 is inserted between the upper frame 200 and the lower frame 100 so that the support frame 400 supports the upper frame 200 and the manhole cover 500 more rigidly The support base 400 may further include a support bolt hole 439 passing through between the radially outer side and the inner side of the upper support base engagement portion 433 and having a female screw hole. The upper support 410 and the lower support 430 are fixed to each other in a state in which the upper support 410 and the lower support 430 are fixed to each other by coupling the support bolt 440 to the support bolt hole 439. [ Lt; / RTI >

Hereinafter, the method of adjusting the height of the manhole frame of the valve chamber according to the present invention will be described in detail with reference to FIGS. 7 and 8. FIG.

FIG. 7 is a view illustrating a method of adjusting the height of a manhole frame of a valve chamber according to an embodiment of the present invention, and FIG. 8 is a plan view illustrating a method of operating a lifting device for lifting a manhole frame in FIG.

A method for adjusting the height of a manhole frame 40 comprising an upper frame 200 and a lower frame 100 and fixed to the upper side of the valve chamber 10 according to the present invention is as follows .

First, a lower side wall 110 forming a hollow cylindrical body having a first diameter and two nuts (not shown) extending radially outward from the lower end of the lower side wall 110 and facing the central axis of the hollow cylindrical body The lower frame 100 having the lower coupling flange 130 formed with the coupling hole 133 and the lower support lower insertion hole 135 is fixed at the manhole position on the upper side of the valve chamber 10 ), S110).

A lower part of the lifting device nut 310 having a female screw thread formed on the inner surface of the upper side is inserted into the nut coupling hole 133 of the lower frame 100 and welded, And fixed to the flange portion 130 (Fig. 7 (b), S120). At this time, a lift device nut 310 formed by a right screw is fixed to the nut coupling hole 133 located on the left side of the operator, and a lift device nut 310 formed by a left screw is fixed to the nut coupling hole 133 located on the right side of the worker.

The lower frame 100 is provided with a packing groove 139 formed to be recessed along the outer circumference of the lower sidewall 110 at an upper portion of the lower frame 100 for watertight coupling between the lower frame 100 and the upper frame 200 The watertight packing 150 is inserted (Fig. 7 (b), S130).

Subsequently, the upper frame 200 is coupled to the lower frame 100 (Fig. 7 (c) and 7 (d), S140). The upper frame 200 includes an upper sidewall 210 having a second diameter capable of receiving the lower sidewall 110 of the lower frame 100 inwardly and a lower sidewall 210 radially outward from the upper end of the upper sidewall 210 A boss part insertion hole 233 formed to extend to correspond to the nut coupling hole 133 and an upper support flange insertion hole 235 formed to correspond to the support lower insertion hole 135, And an upper part of the upper part 200 is inserted into the boss part insertion hole 233 of the upper frame 200 from below so as to be coupled to the boss part insertion hole 233, A riser boss 250 formed with a hole 253 and a screw cover 340 coupled to a lower end of the riser boss 250 and accommodating the riser nut 310 therein.

A cap portion 331 formed downward from the cap portion 331 and extending downward from the lifting device boss 250 to the lifting device through hole 253 A ring-shaped coupling portion 335 formed in a shape of being recessed along one side of the center of the cylindrical stem portion 333, and a ring-shaped coupling portion 335 formed at a lower portion of the cylindrical stem portion 333, Of the lifting device nut (310) and a stem thread portion (337) formed with a male screw thread engaging with the female screw thread of the lifting device nut (310) Preventing ring 350 that is formed to be smaller than the inner diameter of the boss insertion hole 233 of the boss insertion hole 233 of the boss insertion hole 233 and is formed to be larger than the inner diameter of the riser through hole 253 of the riser boss 250 7 (e) and 7 (f), S150).

The lifting device 330 is inserted from above through the boss insertion hole 233 and is coupled to the lifting device nut 310 at step S160. At this time, a lifting device 330 formed by a right screw is coupled to the lifting device nut 310 located on the left side of the worker, and a lifting device 330 formed by a left hand screw is coupled to the lifting device nut 310 located on the right side of the worker.

A cap through hole 510 that is larger than the outer diameter of the cylindrical stem portion 333 of the lifting device 330 and smaller than the outer diameter of the fall preventing ring 350 is formed to correspond to the boss portion insertion hole 233 A manhole cover 500 is installed on the upper frame 200 so as to be integrally coupled to the upper frame 200 (S170). Combining the manhole cover 500 integrally with the upper frame 200 means, for example, coupling the manhole cover 500 to the upper frame 200 with the lid-fitting bolts described above.

Subsequently, the operator lifts the manhole cover 500 by simultaneously rotating the two lifting devices 330 using both hands (Fig. 7 (g), S180). At this time, the lifting device 330 on the left side of the worker rotates counterclockwise and the lifting device 330 on the right side of the worker rotates clockwise (see FIG. 8). Of course, when the two lifting devices 330 are rotated in the opposite direction, the manhole frame 40 and the manhole cover 500 will be lowered.

When the manhole cover 500 is raised to a predetermined position, the lower end of the lower frame 100 and the lower end of the lower frame 100 are inserted into the lower insertion hole 135 of the lower frame 100 and the upper insertion hole 235 of the upper frame 200, The length of the two supports 400 formed to allow the upper end to be inserted and engaged is installed to support the manhole cover 500 (FIG. 7 (h), S190).

Since the structure and operation of the supporter 400 inserted between the upper frame 200 and the lower frame 100 by adjusting the length to stably support the manhole cover 500 have been described above, I never do that.

After the installation of the support frame 400 is completed, the coupling of the manhole cover 500, which is integrally coupled to the upper frame 200, is released so as to be detachable from the upper frame 200. Disengaging the manhole cover 500 integrally coupled to the upper frame 200 means removing the lid-fitting bolts. Thereby, the manhole cover 500 becomes openable and closable for the operator's access.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed embodiments, Quot; is set forth only in the description of the following claims.

10: valve chamber 20: inflow pipe
30: Outflow pipe 40: Manhole frame
50: height adjusting device 100: lower frame
110: lower side wall 130: lower coupling flange portion
133: nut coupling hole 135: lower support slot
139: packing groove 150: watertight packing
200: upper frame 210: upper side wall
230: upper engagement flange portion 233: boss portion insertion hole
235: Upper support hole upper insertion hole 250: Lift device boss
253: lifting device through-hole 310: lifting device nut
313: nut portion 315: stem thread passing portion
330: lifting device 331: cap
333: cylindrical stem portion 335: ring engagement portion
337: screw thread portion 340: screw cover
350: anti-falling ring 400: support
410: upper support 413: upper projecting engaging part
430: lower support 433: upper support coupling part
435: upper support bar penetration part 437:
439: Supporting Fixing Bolt Hole 440: Supporting Fixing Bolt
500: Manhole cover 510: Cap hole

Claims (8)

A lower sidewall forming a hollow cylindrical body having a first diameter and a lower coupling flange portion formed to extend radially outward from a lower end of the lower sidewall and having two or more even numbered nut coupling holes and two or more even numbered support base lower insertion holes, A lower frame having a lower frame;
An upper sidewall having a second diameter capable of receiving the lower sidewall of the lower frame inwardly, a boss insert hole formed to extend radially outward from an upper end of the upper sidewall and corresponding to the nut coupling hole, An upper frame having an upper engaging flange portion formed with a supporter upper insertion hole corresponding to a lower insertion hole of the supporter;
A lifting device boss formed in an upper portion of the upper frame so as to be insertable into the boss portion insertion hole of the upper frame and coupled to the boss portion insertion hole and having a lifting device through hole formed therein in the vertical direction;
A lifting device nut coupled to the lower engaging flange part by inserting a lower part of the lower part into the nut engaging hole of the lower frame and having a female screw hole formed on an inner surface of the upper side;
A cylindrical stem portion extending downward from the cap portion and rotatably coupled to the lifting device through hole of the lifting device boss, a cylindrical stem portion extending downward from the cap portion and formed of a cylindrical stem portion, A lifting device including a ring engaging portion formed in a shape of a depression along the circumference at one side of the center, and a stem thread portion extending downward from the cylindrical stem portion and having a male screw thread engaging with a female screw thread of the lift nut;
And a lowering preventing ring formed to be larger than an inner diameter of the boss insert hole of the upper frame and larger than an inner diameter of the riser through hole of the riser boss, ;
A lower frame and a lower frame of the upper frame, and a lower end and an upper end of the upper frame, respectively, And
A cap hole that is larger than an outer diameter of the cylindrical stem portion of the lifting device and is smaller than an outer diameter of the fall preventing ring corresponds to the boss portion insertion hole, and a manhole cover coupled to the upper frame;
, ≪ / RTI >
Wherein the screw thread of a part of the lifting device and the screw thread of the lifting device nut corresponding to the screw thread of the lifting device are formed as a left screw thread and the screw thread of the stem part of the remaining part of the lifting device and the screw threads of the lifting device nut, And the height of the manhole frame height adjusting device is adjusted. The method according to claim 1,
Further comprising a screw cover coupled to a lower end of the riser boss and adapted to receive the riser nut on the inside thereof. The method according to claim 1,
Wherein the support base comprises an upper support having a male screw and a lower support having a female screw engaged with the male screw,
Wherein the upper support is formed with a male screw arch over its entire length and has an upper projecting engaging portion formed at an upper end thereof so as to be projected to be inserted into the upper support hole of the upper frame,
Wherein the lower support member comprises an upper support member engaging portion formed with a female screw hole and an upper support member penetrating portion coupled to a lower end of the upper support member engaging portion and extending downwardly and having a larger diameter than the upper support member,
And a coupling step formed to be inserted into a lower insertion hole of the lower frame of the lower frame by being embedded inwardly along the circumference at the lower end of the upper support through-hole. The method of claim 3,
A support bracket fixing bolt hole penetrating between the radially outer side and the inside side of the upper support bracket coupling portion and formed with a female screw hole; And
A support table fixing bolt which is screwed to the support table fixing bolt hole and presses the upper support table so that the upper support table and the lower support table are fixed to each other in a length-adjusted state;
And the height of the manhole frame height adjusting device. The method according to claim 1,
A packing groove recessed along an outer periphery of the lower sidewall at an upper side of the lower frame; And
A watertight packing inserted in the packing groove and in contact with an inner surface of the upper frame to form a watertight connection between the lower frame and the upper frame;
Further comprising: a height adjusting mechanism for adjusting the height of the manhole frame. A lower frame having a hollow cylindrical lower sidewall and a lower engagement flange portion extending radially outward from the lower sidewall lower end;
An upper frame having an upper sidewall formed to receive the lower sidewall of the lower frame inwardly and an upper engagement flange extending radially outward from an upper end of the upper sidewall;
A lifting device boss having an upper portion inserted into the boss insertion hole formed in the upper engagement flange portion of the upper frame and coupled to the upper portion from the lower side and having an elevating device through hole formed therein in the vertical direction;
A lifting device nut having a lower end coupled to the lower engaging flange portion of the lower frame and having a female screw thread formed on an inner surface of the upper side;
A cylindrical stem portion extending downward from the cap portion and rotatably coupled to the lifting device through hole of the lifting device boss, a cylindrical stem portion extending downward from the cap portion and formed of a cylindrical stem portion, A lifting device including a ring engaging portion formed in a shape of a depression along the circumference at one side of the center, and a stem thread portion extending downward from the cylindrical stem portion and having a male screw thread engaging with a female screw thread of the lift nut;
And a lowering preventing ring formed to be larger than an inner diameter of the boss insert hole of the upper frame and larger than an inner diameter of the riser through hole of the riser boss, ;
A lower frame coupled to the lower frame and a lower frame coupled to the upper frame; And
A cap hole that is larger than an outer diameter of the cylindrical stem portion of the lifting device and is smaller than an outer diameter of the fall preventing ring corresponds to the boss portion insertion hole, and a manhole cover coupled to the upper frame;
, ≪ / RTI >
Wherein the screw thread of a part of the lifting device and the screw thread of the lifting device nut corresponding to the screw thread of the lifting device are formed as a left screw thread and the screw thread of the stem part of the remaining part of the lifting device and the screw threads of the lifting device nut, And the height of the manhole frame height adjusting device is adjusted. There is provided a method for adjusting a height of a manhole frame made up of an upper frame and a lower frame and fixed to an upper side of a valve chamber,
Securing a lower frame having a hollow cylindrical lower sidewall and a lower engagement flange portion formed radially outwardly from the lower end of the lower sidewall at a position of the upper manhole of the valve chamber;
A raising device nut formed by a right screw is fixed to a left side of a worker and a raising device nut is fastened to a work device by a raising device formed on the right side of the worker, Securing the nut;
Fitting a watertight packing for watertight coupling between the lower frame and the upper frame into a packing groove recessed from the upper side of the lower frame along the outer periphery of the lower side wall;
An upper sidewall formed to receive the lower sidewall of the lower frame inwardly, an upper engagement flange portion extending radially outward from an upper end of the upper sidewall, And a screw cover which is coupled to a lower side of the upper engaging flange portion and can receive the lifting device nut on the inner side, Coupling the upper frame to the lower frame;
A cylindrical stem portion extending downward from the cap portion and rotatably coupled to the lifting device through hole of the lifting device boss, a cylindrical stem portion extending downward from the cap portion and formed of a cylindrical stem portion, A ring engagement portion formed at one side of the circumference of the ring-shaped engagement portion, and a stem thread portion extending downward from the cylindrical stem portion and having a male screw portion engaged with a female screw thread of the lift- Coupling an anti-lowering ring formed by dividing the outer ring into two parts, the outer diameter of which is smaller than the inner diameter of the boss insertion hole of the upper frame and is larger than the inner diameter of the lifting device through hole of the lifting device boss;
The lifting device is inserted into the lifting device nut from above through the boss insert hole and is coupled to the lifting device nut while the lifting device formed by the right screw is engaged with the lifting device nut located on the left side of the worker, Combining the raised riser;
A step of integrally assembling a manhole cover integrally formed on the upper side of the upper frame, the cap having a cap through hole larger than an outer diameter of the cylindrical stem portion of the lifting device and smaller than an outer diameter of the fall prevention ring,
Rotating the lifting device on the left side of the worker in a counterclockwise direction and the lifting device on the right side of the worker in a clockwise direction by raising the manhole cover by simultaneously rotating the two lifting devices using both hands by an operator;
When the manhole cover is raised to a predetermined position, the length of the two support rods, which are formed so that the lower end portion and the upper end portion can be coupled to the lower engagement flange portion of the lower frame and the upper engagement flange portion of the upper frame, To be supported; And
Releasing the coupling of the manhole cover integrally coupled to the upper frame to be detachable from the upper frame;
Wherein the height of the manhole frame is adjusted by adjusting the height of the manhole frame. The method of claim 7,
Wherein the support base comprises an upper support having a male screw and a lower support having a female screw engaged with the male screw,
Wherein the upper support is formed with a male screw thread over its entire length and has an upper projecting engaging portion formed at an upper end thereof so as to be projected to be inserted into an upper support hole formed in the upper engaging flange portion,
Wherein the lower support member comprises an upper support member engaging portion formed with a female screw hole and an upper support member penetrating portion coupled to a lower end of the upper support member engaging portion and extending downwardly and having a larger diameter than the upper support member,
And a coupling stepped portion formed to be inserted into a lower insertion hole formed in the lower coupling flange portion by being recessed inward along the circumference at the lower end of the upper support rod penetration portion.
KR1020170108214A 2017-08-25 2017-08-25 Apparatus and Method for Adjusting Height of a Manhole Frame of a Valve Box KR101857957B1 (en)

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KR102189909B1 (en) 2020-02-10 2020-12-11 본제이워터스 주식회사 Apparatus for adjusting height of manhole cover
KR102195637B1 (en) * 2020-03-13 2020-12-29 정경복 valve room with manhole frame height adjusting device and folding type rising extendable ladder
KR102232257B1 (en) * 2020-11-19 2021-03-24 정경복 valve room with dew condensation preventing function and manhole frame height adjusting function
KR102263374B1 (en) * 2019-12-20 2021-06-11 주식회사 서영금속 Valve Room with Manhole Cover Height Adjuster
KR102295332B1 (en) * 2020-07-08 2021-08-31 이병순 Manhole Frame Height Adjustable Type Valve Room
KR20220018841A (en) 2020-08-07 2022-02-15 이병순 Valve Room With Variable Pipe Insertion Angle

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KR20150117847A (en) * 2014-04-11 2015-10-21 주식회사 한국미터택 Height adjusting apparatus for manhole cover
KR101723776B1 (en) * 2016-10-05 2017-04-05 주성이엔지 주식회사 Module type valve room including height control fuction

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JPH116167A (en) * 1997-06-16 1999-01-12 Hinode Suido Kiki Kk Lid opening structure for underground structure
KR100973229B1 (en) 2010-04-20 2010-07-30 (주) 디케이금속 The valve room that adjustable is high easy of a manhole fram
KR20150017281A (en) * 2013-08-06 2015-02-16 (주) 디케이금속 The valve room that adjustable in height and slope of a manhole frame
KR20150117847A (en) * 2014-04-11 2015-10-21 주식회사 한국미터택 Height adjusting apparatus for manhole cover
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102263374B1 (en) * 2019-12-20 2021-06-11 주식회사 서영금속 Valve Room with Manhole Cover Height Adjuster
KR102189909B1 (en) 2020-02-10 2020-12-11 본제이워터스 주식회사 Apparatus for adjusting height of manhole cover
KR102195637B1 (en) * 2020-03-13 2020-12-29 정경복 valve room with manhole frame height adjusting device and folding type rising extendable ladder
KR102295332B1 (en) * 2020-07-08 2021-08-31 이병순 Manhole Frame Height Adjustable Type Valve Room
KR20220018841A (en) 2020-08-07 2022-02-15 이병순 Valve Room With Variable Pipe Insertion Angle
KR102232257B1 (en) * 2020-11-19 2021-03-24 정경복 valve room with dew condensation preventing function and manhole frame height adjusting function

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