KR20010112725A - Height controller of manhole cover - Google Patents

Abstract

An intermediate polyester fiber prepared by passing a highly oriented unstretched polyester fiber having a degree of crystallization in a specified range into a non-contact type heater at a temperature of 250 °C or above under a tension of 0.3 x 10 -2 g/d to 5.0 x 10 -2 g/d to cause shrinkage by 5 to 40 %, and characterized by having the following properties (A): (1) a specific gravity of 1.335 to 1.360 (g/cm 3); (2) a degree of crystallization of 21 to 26 %; (3) a crystal size of 1.4 to 2.2 nm for the index of crystal face (010), 1.4 to 2.5 nm for the index of crystal face (100), and 1.6 to 3.5 nm for the index of crystal face (105); (4) a degree of crystal orientation of not more than 75 % for the 010 plane and not more than 85 % for the 105 plane; and (5) a noncrystal orientation degree of 0,15 to 0,4, a hydrothermal shrinkage of 0 to 35 %, and a dry heat shrinkage of 0 to 35 %. A process for preparing a woven fabric which comprises heat-treating the above intermediate polyester fiber at a temperature of 120 °C or above without substantially stretching before and/or after weaving the fiber for change to a specified fiber structure, thereby preparing a woven fabric which has excellent resilience and exhibits setting resistance (such as fiber toppling resistance and slanting resistance), bulking power, and cushioning properties. In particular, in a multiple layer woven fabric called "three-dimensional woven fabric", such as fiberboard knit, significant effects can be attained including high tear strength, impact absorption, and pilling resistance.

Description

Height adjustment device of manhole cover {HEIGHT CONTROLLER OF MANHOLE COVER}

The present invention is a manhole that is installed to manage the underground and communication lines or traffic information network, as well as the electric line, water, sewage and gas facilities in the basement and to manage them, the manhole is installed on the ground By applying an asphalt or concrete coating work to the ground of the part where the manhole is installed in the state, the height of the manhole can be prevented from being lowered and the height of the manhole can be freely adjusted to fit the height of the ground. It relates to a height adjusting device of the lid for the manhole that can improve the bearing capacity of the load applied to the manhole.

1 and 2, the manhole 101 is installed at the construction site for the construction of electricity lines, communication lines, gas pipes, traffic information networks, water supply and sewage facilities, and the like for underground construction. At the upper portion of the 101, a manhole cover 201 is installed to protect and manage the facilities in the manhole while smoothly passing pedestrians or vehicles.

In addition, one side of the lid is provided with a handle for opening and closing the lid and the lid is to be installed in a state that is simply mounted on the engaging jaw portion 301 formed on the upper end of the inlet of the manhole, or use the toothed screw portion 401 The manhole and the lid were configured to be fixed prior to the pavement at a set height regardless of the pavement state of the road.

However, in the conventional case, the top height of the manhole is determined by design because the lid is placed in a state where the lid is simply placed at the entrance of the manhole, or because the tooth screw of the inclined state is formed and installed. Due to this, there was no choice but to fix it. Therefore, after the pavement work such as the road, the manhole part was recessed to form a pit. There was a flaw.

In addition, since a pit is formed in a portion where the manhole is installed, when a vehicle or the like passes on the road, the manhole is impacted and the load of the vehicle is moved to the manhole, and the manhole and the manhole cover There is a problem such as a strong impact on the manhole, the manhole and the manhole cover is damaged by the impact, the management of the manhole is difficult, and the facilities installed in the manhole can not be safely protected.

The present invention has been made in view of the above-mentioned conventional problems, the present invention is to embed the electric line as well as communication lines or traffic information network underground and manage it, or buried water, sewage facilities and gas facilities underground and manage it In the manhole provided to be able to do so, in the state where the manhole is installed on the ground, the manhole to prevent the height of the manhole to be lowered by applying a coating work such as asphalt or concrete on the ground of the site where the manhole is installed To adjust the height of the free to adjust the height of the ground, and to provide a height adjustment device for the manhole cover that can improve the bearing capacity of the load applied to the manhole, which is attached to the following drawings When described in detail based on the following.

1 is a cross-sectional view showing a conventional manhole structure

Figure 2 is a cross-sectional view showing another state of installing a lid in a conventional manhole

Figure 3 is an exploded perspective view showing a separation state of the present invention

Figure 4 is a cross-sectional view showing an isolated state of the present invention

5 is a cross-sectional view showing an assembled state of the present invention.

Explanation of symbols on the main parts of the drawing

1: manhole

2: entrance

3: Fastening part

4: lower cover

5: Fastener

6: cover

7: regulator

8: guide groove

9: top cover

10: coating layer

In the installation of the manhole cover in the upper inlet (2) of the manhole (1), which is installed in order to bury the electric line, communication line and traffic information network in the basement, to the entrance (2) of the manhole (1) The fastening part 3 is formed, and the fastening part 5 with which the lower cover 4 is interposed in this fastening part 3 is fastened and installed, and this fastener 5 is fastened and installed with the cover 6.

Inside the cover (6), the height adjustment is possible, while installing the adjusting groove (7) having a guide groove (8) and the upper cover (9) is installed on top of the adjusting hole (7) and the manhole (1) It is configured by applying a coating layer 10, such as asphalt, to the upper peripheral portion of the inlet (2).

The threaded portions formed in the fastener 5 and the cover 6 and the adjustment opening 7 are formed by square screws, and the square screws formed in the fastener 5 and the adjustment opening 7 have their flesh thicknesses. It is configured to have a length of approximately 12-16mm when the 30-60mm to maximize the load capacity according to the load received by the square screw.

The present invention configured as described above in the installation of the manhole cover in the upper inlet (2) of the manhole (1) which is installed in order to bury the electric line, communication line and traffic information network in the basement, the fastening portion The fastener 5 is fastened and installed in accordance with the design in a state where the lower cover 4 is placed on the inlet 2 of the manhole 1 in which the 3 is formed, and the fastener 5 is provided with a cover 6. Fasten and fix it.

It is possible to adjust the height of the inside of the cover 6 in the above state while installing the adjusting groove 7 formed with the guide groove 8 and the upper cover 9 is installed on the upper portion of the adjusting hole 7 In the state in which the control hole 7 and the upper cover 9 are installed on the upper part of the inlet 2 of the manhole 1, the road pavement is completed while applying the coating layer 10 such as ascone around them.

When the upper cover 9 installed on the upper part of the manhole 1 is lower or higher than the road after the road pavement is completed as described above, the upper cover 9 is opened and the control unit 7 is rotated to The height is adjusted to match the upper surface of the road and the construction is completed by covering the upper cover 9 in the state where the height adjustment is made.

In addition, the threaded portion formed in the fastener 5 and the cover 6 and the adjuster 7 is formed with a square screw, the square screw formed in the fastener 5 and the control 7 is their flesh. When the thickness is 30-60mm, it has a length of about 12-16mm, so that even if it receives a load according to the weight of the vehicle through the upper cover 9 and the control opening 7, approximately 25.51kgf per 1mm2 by the test value The internal force of the is to act, and by this internal force to be able to achieve stability while maximizing the internal strength of the manhole (1).

As described above, the present invention is provided with a manhole cover on the upper part of the manhole as described above, but by installing the upper end of the manhole (1) that can be adjusted by adjusting the height of the upper part of the manhole (1) It can be matched with the surface of the road, so that the state of the road is made flat even if the manhole (1) is installed.

In addition, the manhole cover can be installed stably in the manhole, and can maximize the strength of the manhole to safely protect the facilities installed in the manhole, to prevent the breakage of the manhole, etc. In addition, the pedestrians and vehicles that pass through this area can be secured.

Claims (3)

In the installation of the manhole cover in the upper inlet (2) of the manhole (1), which is installed in order to bury the electric line, communication line and traffic information network in the basement, to the entrance (2) of the manhole (1) The fastening part 3 is formed, and the fastening part 5 which the lower cover 4 is interposed in this fastening part 3 is fastened and installed, The fastener 5 is fastened and installed by the cover 6, and Inside the cover 6, the height adjustment is possible, while the guide groove (8) is provided with a control opening (7) is installed and the upper cover (9) is installed on the top of the control hole (7) of the manhole (1) The height adjusting device of the lid for the manhole, characterized in that the inlet (2) is applied by applying a coating layer (10) such as asphalt to the upper peripheral portion. The height adjusting device of the lid for manholes according to claim 1, wherein the threaded portions formed in the fasteners (5) and the cover (6) and the adjusting mechanism (7) are formed by square screws. The square screw according to claim 1 or 2, wherein the square screws formed on the fasteners 5 and the adjustment holes 7 have a length of approximately 12-16 mm when their flesh thickness is 30-60 mm. The height adjustment device of the lid for the manhole, characterized in that configured to maximize the load capacity according to the load received.