KR100936814B1 - Double fixed manhole cover - Google Patents

Abstract

The present invention relates to a double fixed cover structure of the manhole, the locking device (bolt) of the manhole cover and the inner lid is fixed to the inner coupling without being exposed to the outside to remove the flow of the manhole cover so that noise is not generated and the manhole cover This phenomenon is prevented from being separated to the outside.

In addition, the manhole cover and the inner lid is to enable easy and safe opening and closing of the manhole cover with a switch using a lever principle for fixing, detachment.

Manhole cover, inner cover, manhole support frame, switchgear, manhole

Description

Boltless manhole cover {Double fixed manhole cover}

The present invention relates to a double cover structure of the manhole, the locking device (bolt) of the manhole cover and the inner lid is fixed to the inner coupling without being exposed to the outside to remove the flow of the manhole cover so that noise is not generated and the manhole cover is This is to prevent the phenomenon from coming off to the outside.

The conventional manhole has a structure consisting of a manhole cover and a manhole support frame as shown in FIG. The manhole cover of such a structure is an independent structure that can flow, and there are many examples of noise generated by the traffic of the vehicle, and the phenomenon of leaving outside is frequent. In order to prevent this, there is a structure of a lockable manhole cover type, but the locking part is exposed to the outside, which causes severe wear of the locking device and difficulty in easily releasing the locking device due to dirt or foreign matter.

The present invention has been made in order to solve the above problems, by fixing the manhole cover to be integrated with the support frame having the inner lid in a double structure inside the manhole support frame to reduce the flow to prevent noise and escape to the outside To prevent.

In addition, the internal fixing structure is less damaging of the fixing device and the purpose of providing a method to open and close the lid simply and safely using the lever principle using the switchgear.

The boltless double fixed manhole cover according to the present invention is a manhole cover including a manhole cover and a manhole support frame, which is provided inside the manhole support frame and has an inner lid support piece protruding on an outer circumferential surface and fixed to the manhole support frame. A manhole cover is provided by the mutual coupling of a manhole cover fixing groove formed on the bottom surface of the manhole cover and a manhole cover fixing key formed on the top surface of the inner cover and guided to the manhole cover fixing groove. Is fixed to.

Here, the inner lid support ribs are formed on the inner wall of the manhole support frame along the circumferential direction, and the inner cover fixing ribs are intermittently formed along the circumferential direction on the inner wall of the manhole support frame. An inner lid insertion groove into which the inner lid support piece can be inserted is formed.

The inner lid has two or more inner lid support pieces on its outer circumferential surface.

The center of the manhole cover is formed with a key groove for inserting a key formed at the tip of the switch, and the center of the bottom of the manhole cover is formed with a key fixing groove for seating the key of the switch.

In the center of the upper surface of the inner lid is formed a key opening including two projections formed spaced apart and the manhole cover is combined with the inner lid by rotating the key of the switch inserted through the key groove of the manhole cover to the key opening Or separate.

The body of the switch has a long rod shape, and has a T-shaped key at the tip and a hinge portion that allows the key to rotate about the tip of the body, and the body is equipped with a support foot rotatably connected to the body.

Fixed double-cover manhole cover according to the present invention is fixed to the manhole support frame without an externally exposed device is effective in preventing the generation of noise and separation of the manhole cover due to the flow.

In addition, the present invention can effectively block the backflow of sewage at the same time to prevent the departure of the manhole cover due to the backflow of sewage in the case of sewage manhole.

In addition, the present invention has an effect that can be easily and safely open and close the manhole cover without the need for specialized technology using the switch.

As shown in FIG. 2, the inner lid fixing ribs 9 are disposed on the inner wall of the manhole support frame 2 and the inner lid fixing ribs spaced from the inner lid support ribs for fixing and supporting the inner lid 3. As the groove (8) is formed, the inner lid support piece (4) formed to protrude on the outer circumferential surface of the inner lid can be inserted into the inner lid insertion groove (7) and the inner lid can be rotated to fix the manhole support frame (2). . It is preferable that at least two inner lid support pieces 4 are installed on the outer circumferential surface of the inner lid for secondary fixing with the manhole cover. As shown in FIG. 2, the inner lid insertion groove 7 is disposed at a portion where the inner lid fixing rib 8 is intermittently broken in the middle and is formed corresponding to the number of inner lid support pieces.

As shown in Figure 2 to 4, the manhole cover (1) is formed on the bottom of the manhole cover fixing groove (6), by rotating the inner lid (3) using a switch to be described later manhole cover on the bottom of the manhole cover Manhole cover fixing key (5) protruding from the upper surface of the inner cover (3) is guided to the fixing groove (6), the inner cover (3) and the manhole cover (1) fixed to the manhole support frame (2) are fastened Is fixed. At this time, as shown in Figure 4, the manhole cover fixing groove 6 formed on the lower surface of the manhole cover 1 is formed to protrude on the upper surface of the inner cover 3, the cross-section of the T-shaped manhole cover fixing key ( 5) is formed in a certain groove size so that it can be guided. At this time, the coupling of the manhole cover fixing key 5 and the manhole cover fixing groove 6 can be confirmed by the sound of the manhole cover fixing key 5 hitting the manhole cover structure frame 13 formed on the lower surface of the manhole cover.

For insertion of the switch to be described later, as shown in Figures 2 to 4, the key groove 10 through the manhole cover is installed in the center of the manhole cover 1 and the switch in the center of the lower surface of the manhole cover 1 To form a key fixing groove 11 is seated so as not to shake when lifting the lid to the switch. Because of this structure, the manhole cover 1 is coupled to the manhole support frame 2, so that the flow is prevented, and even if a large impact is applied from the outside, it is possible to prevent the occurrence of noise and the detachment phenomenon of the manhole cover. In addition, the sewage manhole can effectively block the backflow of sewage.

The manhole was created at the same height as the existing manhole standard so that there is no fear of protrusion on the road surface when replacing the defective manhole.

On the other hand Figure 5, 6 shows the configuration and usage of the switch for opening and closing the manhole cover.

The switch has a long rod shape, having a T-shaped key 14 and a hinge portion 17 at the tip, and the manhole cover on the principle of lever by the support foot 16 installed on the body to be rotatable in the direction of gravity. It is composed of a structure that can be moved.

When the key 14 of the switch is inserted into the manhole cover key groove 10 and touches the inner cover, the switch is turned counterclockwise. The actuator key 14 turns the key opening 12 to rotate the inner lid to separate the manhole cover clamp 6 and the fixing key 5. When the keys are turned back, the actuator body 15 is tilted down. When the actuator body is tilted down, the support feet 16 attached to the body are supported on the road surface while rotating in the direction of gravity.

As the switchgear is formed by the structure of the lever principle, the manhole cover can be opened with little force. The open manhole cover can be safely lowered away from the manhole by turning the switch left and right.

The invention can be used in the art of manholes.

1 is a general manhole structure according to the prior art

Figure 2 is a perspective view showing a manhole structure according to the present invention

Figure 3 is a plan view showing a manhole structure according to the present invention

Figure 4 is a manhole coupled state in accordance with the present invention

5 is a structural diagram of a switch according to the present invention

6 is an embodiment of using and closing the switch according to the invention

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

1-manhole cover 2-manhole support frame 3-inner cover

4-Inside cover support 5-Manhole cover fixing key 6-Manhole cover fixing groove

7-Internal lid insertion groove 8-Internal lid fixing rib 9-Internal lid support rib

10-Keyway 11-Key Locking Slot 12-Key Opening 13-Manhole Cover Frame

14-Height 15-Body 16-Support Foot 17-Hinge

Claims (6)

In the manhole cover comprising a manhole cover (1) and a manhole support frame (2), It is provided inside the manhole support frame (2) and has an inner lid support piece (4) protruding on the outer circumferential surface and has an inner cover (3) fixed to the manhole support frame (2), The interaction between the manhole cover fixing groove 6 formed on the lower surface of the manhole cover 1 and the manhole cover fixing key 5 formed on the upper surface of the inner cover 3 and guided to the manhole cover fixing groove 6 The boltless double fixed manhole cover, characterized in that the manhole cover (1) is fixed to the manhole support frame (2) by coupling. The method of claim 1, An inner lid support rib 9 is formed in the inner wall of the manhole support frame 2 in the circumferential direction, and is spaced apart in the upper direction of the inner cover support rib 9 so as to have a circumference in the inner wall of the manhole support frame 2. Bolt-free double fixed manhole cover, characterized in that the inner lid fixing rib 8 is formed intermittently along the direction to form the inner lid insertion groove (7) into which the inner lid support piece (4) can be inserted. The method of claim 1, The inner lid (3) is a boltless double fixed manhole cover, characterized in that provided with two or more inner lid support piece (4) on its outer peripheral surface. The method of claim 1, In the center of the manhole cover (1) is formed a key groove (10) for inserting the key (14) formed at the tip of the switch, and the key fixing groove (11) in which the key of the switch is seated in the center of the lower surface of the manhole cover (11). Boltless double fixed manhole cover, characterized in that is formed. The method of claim 1, In the center of the upper surface of the inner lid (3) is formed a key opening 12 including two protrusions formed spaced apart to open the key of the switch inserted through the key groove 10 of the manhole cover (1) The bolt-free double fixed manhole cover, characterized in that the manhole cover (1) is coupled to or separated from the inner cover (3) by rotating on the stand. The method of claim 4, wherein The body 15 of the switchgear has a long rod shape, and has a T-shaped key 14 at its tip and a hinge portion 17 which allows the key 14 to rotate about the tip of the body 15, The body 15 is a boltless double fixed manhole cover, characterized in that the support foot 16 is rotatably connected to the body is mounted.

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