KR20160080891A - Intercepting chamber manhole easy opening and closing device - Google Patents

Abstract

The present invention provides a manhole cover opening and closing device easy to open and close, capable of easily opening and closing a manhole by using a push handle with a lever formed in a manhole cover to be integrated. A manhole cover opening and closing device easy to open and close according to an desirable embodiment of the present invention as a manhole opening and closing device for opening and closing the manhole in the upper side of a pipe includes: a manhole cover seating frame buried underground to position the top surface thereof at the same level as an installation ground surface in the upper side of the pipe; the manhole cover opening and closing a manhole entrance by being seated on the manhole cover seating frame; a lever rotary shaft installed at a predetermined interval from an outer circumference of the manhole cover to be parallel to a tangential direction of the outer circumference of the manhole cover; and the push handle with the lever joined to the lever rotary shaft to be able to rotate and to slide in a longitudinal direction of the lever rotary shaft at the same time.

Description

{Intercepting chamber manhole easy opening and closing device}

The present invention relates to a manhole cover opening / closing device, and more particularly, to a manhole cover opening / closing device that facilitates opening and closing of a manhole cover by using a push handle combined with a manhole cover.

Various facilities such as a water pipe, a sewer pipe, a communication line, and a power line are located under the road. Since the facilities must be maintained at all times to meet the purpose, workers need to go underground and repair the facilities if necessary.

In this case, a manhole is provided on the road surface for operator's maintenance. Mainly, the manhole is installed in the middle of the straight line part where the direction changes, the starting point, the intersection point, and the long length. At this time, a manhole cover is installed so that the manhole is closed at a normal time, thereby protecting a pedestrian or a traffic vehicle. In addition, if necessary, the operator can open the manhole cover to perform necessary work.

Generally, the manhole cover is made of cast iron or cast steel to have sufficient strength to support a passing vehicle. In this case, the specific gravity of the material is large, and the manhole cover weighs more than 60 kg depending on the size.

Therefore, in order to open the manhole cover, a large force is required, so that a method of easily opening the manhole with a small force should be provided.

As a background of the present invention, Korean Unexamined Patent Publication No. 10-2012-0097809 discloses a manhole cover opening and closing apparatus. The arm is bent at a predetermined angle to form a first locking hole, and the other end of the arm is formed with a knob portion to which an external force acts. A second latching member coupled to the bent portion of the arm so as to be rotatable; And a support portion formed at a middle portion of the arm and contacting the bottom surface when the external force acts to become a support point.

In the background art, the first and second fastening openings are firmly fixed to the manhole cover, so that a safety accident such as dropping of the manhole cover at the time of opening and closing the manhole cover can be prevented in advance, The manhole cover can be easily lifted with a small force and the manhole cover can be easily moved through the rotation movement.

However, the background art of the former has a problem that the manhole cover opening / closing device is not integrally provided in the manhole cover, but is separated from the manhole cover opening / closing device so as to be managed and stored separately.

Another background art of the present invention is Korean Unexamined Patent Publication No. 10-2013-01399429, which proposes a manhole cover fixing structure. A plurality of support fixtures formed on the inner surface of the manhole support, and a plurality of support fixtures coupled between the fixtures, the plurality of support fixtures being formed on the inner surface of the manhole support, shaft; A cover fixing shaft coupled between a plurality of cover fixing holes formed in the cover and the cover fixing holes; And a connecting means for connecting the support fixing shaft and the cover fixing shaft so that the lid does not come off the manhole support when the lid is opened.

Therefore, in the latter background art, the manhole cover is connected to the support body by the hinge, so that there is no risk of loss in the open state, but the manhole cover is opened and the manhole weight can not be opened easily.

Korean Unexamined Patent Publication No. 10-2012-0097809 (manhole cover opening / closing device) Korean Unexamined Patent Application Publication No. 10-2013-01399429 (Manhole cover fixing structure)

It is an object of the present invention to provide a manhole cover opening / closing device which can be easily opened and closed so that a manhole cover can be easily opened and closed by using a push handle combined with a manhole cover.

According to a preferred embodiment of the present invention, a manhole cover opening /

A manhole opening / closing device for opening and closing a manhole on an upper side of a pipe body,

A manhole cover seating frame embedded in the upper part of the tube so that the upper surface thereof is positioned on the same height as the installation surface;

A manhole cover seated on the manhole cover seating frame to open and close a manhole entrance;

A lever shaft rotating shaft having a predetermined distance from the outer circumferential surface of the manhole cover and being arranged in parallel with the tangential direction of the outer circumferential surface; And

And a lever handle which is rotatable on the rotation axis of the lever and is slidably coupled in the longitudinal direction of the rotation axis of the lever.

Further, the manhole cover seating frame is further provided with a rounded curved surface portion for leverage point so that the contact point when curved is pressed when the combined leverage push handle is tilted.

In addition, the lever handle and the lever handle have a shaft insertion slot formed at one end thereof with a shaft insertion slot into which a lever shaft is inserted, a lever having a straight shape toward the center of the manhole cover, and a pushing operation handle bent in a direction perpendicular to the other end of the lever. .

In addition, the leverage push handle may be housed in a push handle receiving groove opened upward in the manhole cover so as not to protrude onto the surface of the manhole.

Further, the push handle receiving groove is provided with a push handle fitting latch for latching and fixing the free end of the lever handle serving as the lever.

Further, a protruding key is formed in the push handle receiving groove, and a key groove is further formed in the free end of the lever handle, which is forcibly engaged with the protruding key.

According to the manhole cover opening / closing device of the present invention, the manhole cover can be easily opened with a small force by the leverage principle using the push handle handle combined with the lever handle integrally provided in the manhole cover have.

In addition, since the push handle for both levers is integrally provided in the manhole cover, there is no need for separate storage and management, and there is no fear of loss.

In addition, the push handle for both leverage is fixedly stored in the push handle retention groove in the manhole cover, so that no danger is generated during the use of the manhole.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is an exploded perspective view of a manhole cover opening / closing device according to an embodiment of the present invention.
FIG. 2 is an assembled perspective view of FIG. 1. FIG.
Fig. 3 is a state in which the lever-operated push handle is rotated for leverage in Fig.
Fig. 4 is a plan view of Fig. 2; Fig.
FIG. 5A is an enlarged view of the 'K' portion of FIG. 4, showing a state in which the lever handle 52 is coupled to the projection key.
FIG. 5B is an enlarged view of a portion 'K' in FIG. 4, showing a state in which the leverage-common push handle is disengaged from the projecting key.
FIG. 6 is an exploded perspective view of a manhole cover according to an embodiment of the present invention; FIG.
7 is a view showing an example of the construction of a manhole cover opening / closing device which can be easily opened and closed according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

7, the manhole cover opening / closing apparatus according to the embodiment of the present invention includes a manhole cover 30 for opening and closing a manhole at an upper side of a tubular body 10 by lifting the manhole cover 30 by a lever action of a leash- It is easy to open.

A manhole cover seating frame 20 is installed at an upper portion of the tubular body 10 such that an upper surface thereof is positioned on the same height line as the installation surface 5. Although the manhole cover seating frame 20 exemplified in this embodiment is installed apart from the upper end of the body 10, the present invention is not limited to such an installation example. Also, the inner lid 12 may be provided at the upper end of the tubular body 10 as illustrated.

1, a manhole cover seating frame 20 includes a circular flange 201 formed at a lower portion thereof, a ring-shaped cylindrical portion 202 provided at a predetermined height from the circular flange 201, And a manhole entrance 204 that penetrates through the circular base 203 and the circular base 203. Therefore, the manhole entrance 204 is used as a manhole passage of an operator.

As shown in FIGS. 2 and 5B, a rounded curved surface portion 202a for a leverage point is formed on the manhole cover seating frame 20 so that a contact point is formed on a curved line when the push handle 50 is folded down do. The round curved surface portion 202a for the leverage point is formed with a constant radius of curvature at a predetermined angle interval with the center of the manhole cover seating frame 20 being centered. The round curved surface portion 202a for the leverage point is formed only in a predetermined section in the present embodiment, but may be formed around the entire circumference or at regular intervals.

1 to 3, the manhole cover seating frame 20 is provided with a manhole cover 30. That is, the manhole cover seating frame 20 is provided with a manhole cover 30 which is inserted into the cylindrical portion 202 and is supported by the circular support shoe 203. Here, the manhole cover seating frame 20 and the manhole cover 30 are made of cast iron or cast steel, for example. The manhole cover 30 may be formed with a flat top surface or a spherical convex surface. The manhole cover 30 is seated on the manhole cover seating frame 20 to open and close the manhole entrance 204.

The manhole cover 30 is formed with a push handle receiving groove 302 having a predetermined depth and opening upward. The push handle receiving groove 302 may be formed so that its periphery substantially follows the contour of the lever-push handle 50. At this time, when the lever handle 52 is housed in the push handle receiving groove 302, there is a certain clearance between the lever handle 52 and the push handle receiving groove 302, desirable. Here, the operation clearance means a gap into which a finger or other tool or tool (for example, a chandelier, barrel, etc.) can be inserted for forcibly lifting the push handle 50 for leverage.

At this time, the push handle receiving groove 302 is provided with a push handle fitting hook 304 for forcibly latching the free end of the push handle 50, which will be described later. The push handle fitting latch jaw 304 is forcibly inserted into the handle receiving groove 302 when the push handle 50 is pivoted and locked. Thereafter, the push handle fitting latch jaw 304 prevents the leverage lever 50, which is also used as the lever lever, from rotating in the push handle receiving groove 302 by itself.

The manhole cover (30) is provided with a lever shaft (40). The lever shaft 40 is provided at a predetermined distance from the outer circumferential surface of the manhole cover 30 and in parallel with the tangential direction of the outer circumferential surface thereof. In the present embodiment, the lever rotation shaft 40 is forcibly inserted into the shaft coupling hole 301 of the manhole cover 30 and fixed.

The leverage rotating shaft (40) is connected to a leverage push handle (50). The leverage push handle 50 has one end rotatable with the lever rotation shaft 40 and at the same time slidably coupled with the lever rotation axis 40 in the longitudinal direction.

At this time, it is preferable that the leverage push handle 50 is housed in the push handle receiving groove 302, which is opened upward in the manhole cover 30, so as not to protrude on the surface of the manhole.

The push handle 50 includes a lever 501 having a shaft insertion slot 501a to be inserted into the lever shaft 40 and having a straight line toward the center of the manhole cover 30 and a lever 501 And a pushing operation handle 502 bent at a right angle direction. The pushing operation handle 502 is not limited to the illustrated form, and it suffices that the pushing operation handle 502 has a suitable shape and size to be hand-held and able to be stepped on. In the present embodiment, the push handle 50 is formed in a circular cross section, but the push handle 50 is not limited to this cross sectional shape but may be formed in a square or polygonal cross section.

The use method and operation of the thus constituted manhole cover opening / closing apparatus will be described.

First, when the manhole cover 30 is seated in the manhole cover seating frame 20 as shown in FIGS. 2 and 6, the manhole entrance 204 is closed. At this time, the manhole cover 30 is supported by the circular support jaw 203 of the manhole cover seating frame 20.

In this state, the leverage push handle 50 is horizontally housed in the push handle receiving groove 302 on the upper side of the manhole cover 30, so that the push handle 50 is caught even if it is walking on the manhole cover 30, There is no risk factor.

At this time, since the lever handle 52 is forcibly inserted into the push handle fitting hook 304 and fixed to the push handle receiving groove 302 at this time, the behavior of the lever handle 52 for both levers is controlled to improve safety do.

When the operator wishes to open the manhole cover 30 for management or other purposes, first, the lever-operated push handle 50, which is located in the push handle receiving groove 302 of the manhole cover 30, And is brought into contact with the round curved surface portion 202a for leverage point of the manhole cover seating frame 20 as shown in FIG. 6 (B). At this time, the leverage push handle 50 easily rotates about the leverage rotating shaft 40.

In this state, even if the push handle 50 is stepped on, the manhole cover 30 is separated from the manhole cover seating frame 20 as shown in FIG. 6 (c), and the handhole cover 50 30).

At this time, the leverage push handle 50 is separated from the manhole cover seating frame 20 by the leverage method using the round curved surface portion 202a as a point, and can be opened with a small force will be.

After the manhole cover 30 is opened, the push handle 50 can be used again to close the manhole cover 30 to the manhole cover seating frame 20 easily.

As another safety measure for preventing the upwardly biased push handle 50 from being easily pulled upward in a state in which the push handle 50 is overlapped with the manhole cover 30 as shown in FIG. 5, the key handle And a protruding key 306 that is forcibly engaged with the key groove 506 may be formed in the push handle receiving groove 302 of the manhole cover 30.

5A, the push handle 50 is folded into the push handle receiving groove 302 and then the push handle 50 is slid along the lever rotation axis 40 to project the key groove 506 Key 306 so that the lever handle 52 can be fixed so as not to come out by itself.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

20: Manhole cover seat frame
202a: round curved portion for leverage point
30: Manhole cover
302: Push handle storage groove
304: Push handle jaw jaw
306: Extrude key
40: Lever rotation axis
50: Push handle combined with lever
506: keyway

Claims (6)

A manhole opening and closing apparatus for opening and closing a manhole on an upper side of a tubular body (10)
A manhole cover seating frame 20 embedded in the upper part of the tube 10 such that the upper surface thereof is positioned on the same height line as the installation surface;
A manhole cover 30 which is seated on the manhole cover seating frame 20 and opens and closes the manhole entrance 204;
A lever shaft rotating shaft (40) provided on the manhole cover (30) at a predetermined distance from the outer circumferential surface thereof, the lever shaft rotating parallel to the tangential direction of the outer circumferential surface; And
And a lever handle (50) rotatably supported on the lever shaft (40) and coupled to the lever shaft (40) so as to be slidable in the longitudinal direction of the lever shaft (40) Opening and closing device. The method according to claim 1,
Wherein the manhole cover seating frame (20) is further provided with a rounded curved surface portion (202a) for a point of leverage, the point of contact being formed in a curved line when the push handle (50) Easy manhole cover opening and closing device. The method according to claim 1,
The push handle 50 includes a lever 501 having a shaft insertion slot 501a into which the lever shaft 40 is inserted and having a straight shape toward the center of the manhole cover 30, And a pushing operation handle (502) bent in a direction perpendicular to the other end of the manhole cover opening / closing device (501). The method according to claim 1,
The push handle (50) is configured to be housed in a push handle receiving groove (302) opened upward in the manhole cover (30) so as not to protrude on the surface of the manhole. Manhole cover opening and closing device. 5. The method of claim 4,
Wherein the push handle receiving groove (302) is provided with a push handle fitting hook (304) for latching and fixing the free end of the lever handle (50). 5. The method of claim 4,
A protruding key 306 is formed in the push handle receiving groove 302 and a key groove 506 is formed at a free end of the lever handle 52 for forcibly engaging with the protruding key 306. [ A manhole cover opening / closing device for easy opening and closing.

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