KR20110006831A - Manhole cover with theftproof function and opening device for the same - Google Patents

Abstract

PURPOSE: A manhole lid with a theft-protection function and a device for opening the manhole lid are provided to prevent an outer plate from becoming separated without a dedicated opening device. CONSTITUTION: A manhole lid(20) with a theft-protection function comprises an inner plate(21) and an outer plate(22). The inner plate is placed on the protrusion(11) of a manhole body(10). Fastening holes(11a,21a) are formed on the inner plate, which is stably fixed to the protrusion by a fixing bolt(B). The outer plate is deposited on the top of the inner plate and is fixed to the inner plate through compulsory insertion.

Description

Manhole cover with theft protection and manhole cover {Manhole cover with theftproof function and opening device for the same}

The present invention relates to a manhole cover having an anti-theft function, and a dedicated opening device of the manhole cover, and more particularly, including an inner plate fixed to the manhole body, and an outer plate fixed to the inner plate through interference fit. And a manhole cover configured to be difficult to separate from the outer plate without using a dedicated opening device, and a manhole cover opening device which can easily separate and discharge the outer plate of the manhole cover from the inner plate. will be.

Manholes are made up of various types such as communication manholes where communication channels are buried underground, rainwater manholes that drain rain and snow, and sewage manholes where wastewater and wastewater from homes and factories are collected.

These manholes are used to inspect, repair or clean water pipes, sewer pipes, wiring, etc., and to protect the facilities inside the manholes. Cover the manhole cover to prevent it from appearing on the road or sidewalk. These manhole cover is usually made of cast iron by casting and consists of a weight of about 50-60kg.

In the wake of the recent economic crisis, many cases of theft have been encountered as the cast manhole cover is traded for scrap metal. When the manhole cover is stolen, the cost and work time for re-installing the manhole cover are re-used, but the biggest problem is that the manhole is exposed to sidewalks or roads, causing human injury.

In order to solve this problem, each municipality has proposed a method of covering a manhole by making a plastic manhole cover, but this causes a problem that is not practical, such as a fear of damage when installed on a road or a sidewalk under heavy load.

On the other hand, in the past, a separate tool for opening the manhole cover was not presented and is opened entirely by the work force. However, the manhole cover is missed by the weight of the manhole cover when the manhole cover is made of a metal material, and the hand or foot is damaged. Even if a safety accident such as a fire is generated and an emergency such as a gas leak, a fire or an electric leakage is required, the opening of the manhole cover is not easy to be made, so the response time is long, leading to a large accident.

In order to solve this problem, various types of manhole cover openers have been proposed, but most of the manhole cover openers described above are moved to large vehicles because they are bulky or heavy by means of power, so they can be used in times of emergency. Many openers, which are cumbersome and expensive parts, have been impractical.

An object of the present invention devised to solve the above problems is to include an inner plate fixed to the manhole body, and an outer plate fixed to the inner plate through interference fit, without using a dedicated opening device of the outer plate The present invention provides a manhole cover that is configured to be difficult to separate and has an anti-theft function, and an opening device of the manhole cover that can be easily separated and discharged from the inner plate of the manhole cover.

The above object is achieved by the following configuration provided in the present invention.

The manhole cover having an anti-theft function according to the present invention,

It is configured to include an inner plate fixed to the manhole body, an outer plate which is installed by stacking on top of the inner plate, configured to close the upper part of the manhole body open at the top,

The inner plate is formed such that the truncated conical truncated upward gradually toward the bottom is formed, the upper and lower penetrating holes of the outer plate are formed,

The outer plate is forcibly fitted to a truncated cone formed in the inner plate through a press-in hole in the process of being seated on the upper portion of the inner plate fixed to the manhole body, characterized in that configured to form a stable fixed state.

Preferably, a snap ring having a diameter larger than that of the indentation hole is provided at an end portion of the truncated cone which penetrates the indentation hole of the outer plate and protrudes upwardly to the outer plate, and is configured to prevent separation of the outer plate from the truncated cone by the snap ring.

More preferably, a fastening hole is formed in the seating jaw of the manhole body and the inner plate seated on the seating jaw, and the inner plate is fixed to the seating jaw of the manhole body by a fixing bolt fastened through the fastening hole. .

On the other hand, the manhole cover opening device proposed in the preferred embodiment of the present invention comprises an inner plate which is fixed to the hollow manhole body with an upper portion and an outer plate which is stacked on top of the inner plate and is provided with an upper portion of the manhole body. By closing the conical cone, the diameter of the inner plate is widened from the upper center to the lower portion is formed so as to protrude upward, the center of the outer plate is penetrated through the upper and lower indentation, the outside of the indentation hole a plurality of adhesive holes respectively Is formed, by separating the forcing the outer plate through the truncated cone and the indentation in the upper portion of the inner plate fixed to the manhole body,

A pressure shaft having a spiral feed groove formed in an outer diameter thereof; A lifting bush having a spiral feed groove formed in an inner diameter and penetrating the pressing shaft to move up and down by a forward and reverse rotation of the pressing shaft; And a clamper having one end hinged to the elevating bush and a shoulder end formed on the other end thereof.

When the lower end of the pressing shaft is supported on the top of the truncated cone and the clamping end of the clamper is attached to the attaching hole of the outer plate, respectively, and the pressing shaft is rotated in the forward direction.

The lifting bush is configured to lift the outer plate adhered to the clamp arm while lifting along the pressing shaft to separate the outer plate fitted to the truncated cone of the inner plate.

In the present invention, a lever lever having a pedestal at one end is installed in the pressing shaft in a rotational structure, and the operator rotates the pressing shaft in the forward direction to separate the outer plate fitted to the truncated cone of the inner plate, and then raises the other end of the lever lever. It is configured to separate and discharge the heavy load outer plate separated from the truncated cone of the inner plate by the lever action with little force from the manhole body.

As described above, the present invention includes an inner plate fixed to the manhole body and an outer plate fixed to the inner plate through interference fit, and configured to be difficult to be separated without the use of a dedicated opening device. A manhole cover configured to have a preventive property and an opening device of a manhole cover that can be easily separated and discharged from the inner plate of the manhole cover are proposed.

The manhole cover configured to have the antitheft property is composed of an inner plate fixed to the manhole body and an outer plate fixed to the inner plate through interference fit, so that quick dismantling is not performed without using a dedicated opening device proposed by the present invention. By making it difficult, it has improved antitheft property.

In addition, the opening device of the manhole cover according to the present invention, the manhole cover can be easily opened in a short time, and can be easily lifted and then discharged by levering the outer plate of the open high-load manhole cover, easy Work is possible and the work efficiency is greatly improved.

Hereinafter, with reference to the accompanying drawings will be described in detail a manhole cover having an anti-theft function and a dedicated opening device of the manhole cover proposed in the preferred embodiment of the present invention.

Figure 1 shows the overall configuration of a manhole cover having an anti-theft function proposed as a preferred embodiment of the present invention, and a dedicated opening device of the manhole cover, Figure 2 is theft proposed as a preferred embodiment in the present invention The manhole cover having a prevention function is shown in the installation state of the manhole body, Figure 3 is a manhole cover installed through the installation process shown in Figure 2 through the manhole cover opening device according to the present embodiment, by separating from the manhole body It shows the process of discharge sequentially.

The manhole cover 20 having the anti-theft function proposed in the present invention is an inner plate 21 fixed to the manhole body 10, and an outer plate 22 stacked on the inner plate 21. It is configured to include, is configured to close the upper manhole body 10 is open.

As shown in the drawing, fastening holes 11a and 21a are formed in the seating jaw 11 of the manhole body 10 and the inner plate 21 seated on the seating jaw 11, and the inner plate 21 is fastened. It is fixed to the seating jaw 11 of the manhole body 10 by the fixing bolt (B) fastened through the balls (11a, 21a).

And, the fixing bolt (B) for fastening between the seating jaw 11 and the inner plate 21 of the manhole body 10 is covered by an outer plate 22 which is stacked on top of the inner plate 21 and exposed. Prevented.

Therefore, the manhole cover 20 according to the present embodiment must remove the outer plate 22 installed on the upper part of the inner plate 21 to expose the fixing bolt B to the outside, and the inner plate 21 to the manhole body 10. Can be separated).

In this embodiment, a close fixing structure is provided between the inner plate 21 and the outer plate 22 forming the manhole cover 20, and is fixed to the inner plate 21 without using a dedicated opening device 100 to be described later. The detachable outer plate 22 is configured to be difficult to be separated, so as to have improved anti-theft property.

To this end, in the present embodiment, the truncated truncated cone 21b is gradually projected upwardly toward the lower portion of the inner plate 21, and the upper plate 22 is formed with a press-through hole 22a vertically penetrating.

Therefore, the outer plate 22 is forcibly fitted to the truncated cone 21b formed on the inner plate 21 through the press-in hole 22a in the process of being seated on the upper portion of the inner plate 21 fixed to the manhole body 10 and is fixed and fixed. It forms a state, and the interference fit state formed between the outer plate 22 and the inner plate 21 has an improved anti-theft property since the dismantling is practically difficult using a wedge, which is a general dismantling tool.

As shown in the figure, an installation groove 21b-a is formed at an end portion of the truncated cone 21b which penetrates the press-in hole 22b of the outer plate 22 and protrudes upwardly to the outer plate 22, and the mounting groove 21b-a. ), A snap ring 21c having a diameter larger than that of the press-in hole 22a is provided to prevent the phenomenon that the outer plate 22 is separated from the truncated cone 21b by the snap ring 21c.

On the other hand, the manhole cover opening device 100 according to the present invention, the inner plate 21 is fixed to the hollow manhole body 10 with the upper portion, and the outer plate 22 which is installed by being stacked on the upper portion of the inner plate 21. By closing the upper part of the manhole body 10, which is configured and opened, the truncated cone 21b is formed to protrude upward from the upper center of the inner plate 21 toward the lower portion and the outer plate ( The inner plate 21 fixed to the manhole body 10 is formed by radially forming a press-fitting hole 22a vertically penetrating in the center of the 22 and a plurality of adhesive holes 22b outside the press-fitting hole 22a. The outer plate 22 is a device for separating the outer plate 22 of the manhole cover 20 which is fixed by being fitted through the indentation hole 22a to the truncated cone 21b of the inner plate 21 and the manhole body 10.

According to this embodiment, the manhole cover opening device 100, the pressing shaft 110 is formed with a spiral feed groove 121 in the outer diameter as shown in Figure 1 and 3; An elevating bush (121) formed in the inner diameter, the elevating bush (120) penetrating through the pressing shaft (110) to move up and down by the reverse rotation of the pressing shaft (110); And a clamper having one end fixed to the elevating bush 120 and a shoulder end 132 formed at the other end thereof.

Referring to the drawings, four clampers 130 are installed on the outside of the elevating bush 120 in a hinge 131 structure, and the outer plate 22 of the manhole cover 20 in which the attachment hole 22b is formed is four clampers. The adhered end 132 of 130 is adhered conformally.

The lower end of the pressing shaft 110 is formed in an inverted cone shape, and a center groove 121b-b is formed in the center of the upper end of the truncated cone 121b, and the lower end of the pressing shaft 110 is a truncated cone 121b. Rotate stably in the state entered in the center groove (121b-b) formed in the), wherein the pressing shaft 110 is configured to rotate by receiving the rotational force provided from the operator through the handle 112 installed on the top.

Therefore, the opening process of the manhole cover 20 through the manhole cover opening device 100 according to the present embodiment, the operator removes the snap ring 21c installed on the truncated cone 21b, as shown in Figure 3a, the pressing shaft The lower end of the 110 is supported on the upper end of the truncated cone 21b, and the attachment end 132 of the clamper 130 is attached to the attachment hole 22b of the outer plate 22, respectively.

In this state, when the operator provides a rotational force through the handle 112 as shown in FIG. 3B to rotate the pressing shaft 110 in the forward direction, the lifting bush 120 is a spiral feed groove 111 of the pressing shaft 110. Ascending along, the outer plate 22 attached to the clamper 130 by the lifting of the elevating bush 120 is lifted and separated from the truncated cone 21b of the inner plate 21 fitted.

Thus, the manhole cover opening device 1 according to the present invention, the elevating bush 120 and the clamper by rotating the pressing shaft 110 to the outer plate 22 of the manhole cover forcibly fitted to the inner plate 21 described above ( It can be easily separated by the rise of 130).

And, in the present embodiment in implementing such a manhole cover opening device 100, the manhole body 10 with a small force on the outer plate 22 of the heavy load separated from the inner plate 21 by the rotation of the pressing shaft 110 ) To provide a structure that can be separated and discharged, so that the high load outer plate 22 can be easily separated and discharged from the manhole body 10.

To this end, in the present embodiment, the lever shaft 140, on which the pedestal 141 is formed, is added to the pressing shaft 110 in a rotational structure.

Referring to the drawings, the lever lever 140 has a bearing 142 installed therein, and the pressing shaft 110 penetrates the bearing 142 so that the pressing shaft 110 is fixed to the lever lever 140 in a rotational structure.

Then, the lower end of the pedestal 141 is provided with a feed roller (141a), the lever lever 140 is fixed to the pressing shaft 110 in a rotating structure and the movement of the support base 141 installed on the lever lever 140. It is configured to be possible.

In addition, in the present embodiment, by providing a height adjustment structure between the pedestal 141 and one end of the lever lever 140, the height of the end of the pedestal 141 and the lever lever 140 according to the body shape or development situation of the operator. It is possible to adjust.

To this end, in the present invention, a plurality of fixing grooves 141b, one end of the lever lever 140 enters and is fixed to the pedestal 141 to be spaced up and down, the worker is levered to suit the situation or his body shape. It is configured to adjust the height of the 140, in this embodiment is fixed by inserting one end of the lever lever 140 in the fixing groove (141b) formed at the bottom.

Therefore, the operator separates the outer plate 22 separated from the inner plate 21 by the rotation of the pressing shaft 110, and then raises the other end of the lever lever 140 as shown in Figure 3c through a heavy load After lifting the outer plate 22, the lever lever 140 is moved through the transfer roller 141a to easily separate and discharge the heavy plate outer plate 22 from the manhole body 10.

Then, the worker dismantles the fixing bolt (B) formed between the inner plate 21 and the seating jaw 11 of the manhole body 10, by separating and discharging the inner plate 21 from the manhole body 10, the manhole body The open state of (10) is formed.

1 is a view showing the overall configuration of a manhole cover having an anti-theft function and a dedicated opening device of the manhole cover proposed as a preferred embodiment of the present invention,

Figure 2 shows the installation state in the manhole body with a manhole cover having an anti-theft function proposed as a preferred embodiment in the present invention,

FIG. 3 sequentially shows a process of separating and discharging the manhole cover installed through the manhole cover opening device shown in FIG. 2 through the manhole cover opening device according to the present embodiment.

**** Explanation of symbols for the main parts of the drawing ****

1. Manhole

10. Manhole body 11. Seating jaw

11a. Fastener

20. Manhole cover 21. Inner plate

21a. Fastener 21b. Truncated cone

21b-a. Installation groove 21b-b. Home

21c. Snap ring B. Fixing bolt

22. Shell plate 22a. Indentation

22b. A hardworker

100. Manhole cover opening device

110. Pressing shaft 111. Feed groove

112. Handle

120. Lifting bush 121. Transfer groove

130. Clamper 131. Hinge

132. Affix

140. lever lever 141. stand

141a. Feed roller 141b. Fastener

142. Bearings

Claims (5)

 It is configured to include an inner plate fixed to the manhole body, the outer plate is stacked on top of the inner plate, the upper part is configured to close the upper part of the open manhole body, the inner plate has a truncated cone that gradually increases in diameter toward the bottom It is formed to protrude upward, the upper and lower penetrating hole of the outer plate is formed, The outer plate is a manhole cover having an anti-theft feature, characterized in that configured to be secured by being fitted to the truncated cone formed on the inner plate through the indentation hole in the process of being seated on the upper portion of the inner plate fixed to the manhole body. According to claim 1, wherein the mounting groove is formed at the end of the truncated cone through the press-in hole of the outer plate and protrudes upwardly to the outer plate, the installation groove is provided with a snap ring having a diameter larger than the press-in hole, the snap ring of the outer plate The manhole cover having an anti-theft function, characterized in that configured to prevent departure. The method of claim 1, wherein the seating jaw of the manhole body and the inner plate seated on the seating jaw is formed through the fastening hole, the inner plate is fixed to the seating jaw of the manhole body by a fixing bolt fastened through the fastening hole Manhole cover having an anti-theft function, characterized in that. Including an inner plate fixed to the hollow manhole body with an open top and an outer plate stacked on top of the inner plate to close the upper part of the manhole body, the diameter widens from the upper center to the lower part of the inner plate. The truncated cone is formed to protrude upward and the upper and lower press-fitted holes are formed in the center of the outer plate, and a plurality of adherent holes are formed in a radial structure on the outside of the press-fitted hole, respectively. By separating the fitted shell, A pressure shaft having a spiral feed groove formed in an outer diameter thereof; A lifting bush having a spiral feed groove formed in an inner diameter and penetrating the pressing shaft to move up and down by a forward and reverse rotation of the pressing shaft; And a clamper having one end hinged to the elevating bush and a shoulder end formed on the other end thereof. When the lower end of the pressing shaft is supported on the top of the truncated cone and the clamping end of the clamper is attached to the attaching hole of the outer plate, respectively, and the pressing shaft is rotated in the forward direction. The elevating bush is configured to lift the outer plate adhered to the clamp arm while lifting along the pressing shaft to separate the outer plate fitted to the truncated cone of the inner plate. According to claim 4, wherein the lever is provided with a lever lever having a pedestal formed in a rotating structure, The operator rotates the pressure shaft in the forward direction to separate the outer plate fitted to the truncated cone of the inner plate, and then raises the other end of the lever lever, so that the heavy plate separated from the truncated cone of the inner plate by the lever action is separated and discharged from the manhole body. Manhole cover opening device, characterized in that configured.

Images