KR100698888B1 - Manhole cover for separated prevention - Google Patents

Abstract

A separation preventive manhole cover of a water supply system is provided to prevent a fall or overturn, and to protect the water supply system securely by restricting the manhole cover from opening and being displaced from a manhole against vibration. A separation preventive manhole cover includes a stepped T-shaped penetration hole(200) formed in the manhole cover and narrowed in a lower part, a rotary bolt(30) fitted to the penetration hole and turned by a tool lever, and a latch(50) combined with an end of the rotary bolt and fitted to an opening end of a manhole body in turning the rotary bolt. A polygonal assembling hole(56) is formed in the latch, and combined with an assembling part(36) of the rotary bolt. The latch is fixed to the rotary bolt by assembling a thread part(38) of the rotary bolt with a nut(39). A spring(S) is inserted between the rotary bolt and the manhole and supported to a bolt head(34) and an inner sill(202) of the penetration hole to project the rotary bolt from the manhole cover. The locking state of the manhole cover is detected accurately by forming a projection(58) in the latch.

Description

Manhole cover for separated prevention

1 is an exploded perspective view of the water supply manhole cover for departure prevention according to the present invention.

Figure 2 is an exemplary cross-sectional view showing a state of use of the water supply manhole cover for departure prevention in accordance with the present invention.

Figure 3 is an operating state diagram for showing the locking / releasing process of the water supply manhole cover for departure prevention in accordance with the present invention.

<Description of Signs of Major Parts of Drawings>

10 ... Manhole body

20 ... manhole cover

30.Rotating Bolt

40 ... stopper

50.Latch

The present invention relates to a water supply manhole cover, and more particularly, to a separation prevention water supply manhole cover with a departure prevention function to prevent the departure from the manhole.

In general, a manhole is formed on the road for inspection or management of facilities buried under the ground, such as water pipes. The upper part of the manhole closes the open upper part of the manhole to facilitate the passage of pedestrians or vehicles. Manhole cover is installed to open and close the door.

However, the conventional manhole cover which is generally used has a weak bearing force because it is simply seated and supported on the upper opening of the upper mandrel of the manhole body, so that local lifting and impact due to the load and impact of the vehicle passing through the upper part of the manhole are weak. Noise is frequently generated and is open to theft. In fact, manhole cover theft accidents are frequently occurring due to the recent rise in steel commodity prices.

If the manhole cover is lost or undesirably opened for the above reasons, underground facilities are exposed to the ground, which causes difficulty in maintenance, and when the manhole opening is exposed on the road, the car falls through the manhole and oversize Can lead to a rollover accident. In addition, there is a point that the risk of a safety accident is very high because there may be a fall accident due to pedestrian carelessness.

The present invention is to solve the above-mentioned conventional problems, and does not open arbitrarily separated without opening to the external force, such as vehicle progress and external vibration, and as a result, to protect the facilities in the manhole while preventing pedestrian or vehicle safety accidents It is an object of the present invention to provide a water-proof manhole cover for departure prevention.

In order to achieve the above technical problem, the present invention provides a tap water manhole cover for departure prevention that cannot be opened arbitrarily from the manhole body.

According to an aspect of the present invention, the manhole cover is formed in the manhole cover while the inner diameter of the lower portion is narrower than the upper stepped T-shaped through hole, and is inserted into the through hole is rotated and bound in the center of the cylindrical body The hole is drilled perpendicularly to the longitudinal direction of the body, and the upper end of the body is coupled with a lever to receive a rotating torque, the multi-head bolt head is formed integrally with the stepped upper portion of the through hole is formed integrally, the lower end of the body is formed with a multi-part fastening portion And a rotating bolt having a threaded portion integrally formed at a lower end of the fastening portion and a threaded portion integrally formed at the outer circumferential surface thereof, and being fastened to a binding hole of the rotating bolt at the back of the manhole cover while the rotating bolt penetrates the through hole formed in the manhole cover. A stopper that prevents the bolt from being detached from the lid, and the work is inserted into the fastening part so as to be engaged. A multi-sided fastening hole is formed on the side surface and is fixed on the rotating bolt through a nut coupled to the rotating bolt screw in the state of being fitted into the fastening part of the rotating bolt through the fastening hole, and the other side is fixed by the rotating torque of the rotating bolt. It includes a latch for preventing the separation of the manhole cover is caught in the upper inner end of the opening of the manhole body while rotating in one direction.

Between the rotating bolt and the manhole cover, both ends of the bolt head and the through hole may be interposed with a spring to provide elastic force in a direction protruding from the manhole cover. In this case, when the locking state coupled to the lower end of the rotating bolt is released from the upper end of the opening of the manhole body, the rotating bolt may protrude from the manhole cover and maintain a secure state of release of the manhole cover with respect to the manhole body. .

In addition, a protrusion may be further formed on the other side of the latch to be convex upward. In this case, when the other end is caught by the upper inner end of the manhole body, the locking state can be reliably detected, so that the locking state of the manhole cover can be easily understood.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the accompanying drawings will be described briefly, the accompanying drawings, Figure 1 is an exploded perspective view of the water supply manhole cover for departure prevention according to the present invention, Figure 2 is a cross-sectional view showing a state of use of the water supply manhole cover for departure prevention according to the present invention.

1 to 2, the manhole cover for departure prevention according to the embodiment of the present invention is formed in the manhole cover 20, while the inside of the T-shaped through hole 200 having a narrower diameter than the upper portion thereof is formed. And, while being inserted into the through-hole 200 and the rotating bolt 30 that can be rotated by the lever for the external tool, and the end of the rotating bolt 30 is swinged by the rotation of the rotating bolt 30 manhole The main body 10 consists of a latch 50 which is caught inside the opening end so that the manhole cover 20 is not separated from the manhole main body 10. The main components of the present invention will be described in more detail.

The rotating bolt 30 has a cylindrical body 32 having a binding hole 320. The upper end of the body 32 is coupled to a separate tool, for example, a tool lever, while receiving a rotating torque, the multi-head bolt head 34 is located above the through hole based on the step 202 of the through hole 200. Is formed integrally. The lower portion of the body 32 is formed with a fastening portion 36 having a polygonal surface, and the lower portion of the fastening portion 36 is integrally formed with a screw portion 38 having a thread on its outer circumferential surface.

The rotating bolt 30 is inserted in a direction penetrating the through hole 200 of the manhole cover 20 from the top to the bottom of the manhole cover 20 in a state where the bolt head 34 is located above the through hole 200. The stopper 40 is fastened to the binding hole 320 of the rotating bolt 30 at the rear surface thereof so that the departure from the manhole cover 20 can be prevented.

The catch 50 is fastened to the front end of the rotating bolt 30 to swing by the rotation of the rotating bolt 30 to start or release the locking state between the manhole body 10 and the manhole cover 20. Specifically, the latch 50 is a rectangular plate having a predetermined thickness, one side thereof is formed with a plurality of fastening holes 56 engaging with the fastening portion 36 of the rotating bolt 30. Such a clamp 50 is rotated through a nut 39 coupled to the threaded portion 38 of the rotating bolt 30 in a state of being fitted to the fastening portion 36 of the rotating bolt 30 through the fastening hole 56. 30 can be fixed on.

Here, between the rotating bolt 30 and the manhole cover 20, both ends thereof are supported by the inner head 202 of the bolt head 34 and the through-hole 200, respectively, the rotating bolt 30 to the manhole cover A spring S is provided which provides an elastic force in the direction which projects with respect to 20. Of course, the spring S is applied to the compression spring. According to this, when the locking state of the latch 50 coupled to the lower end of the rotating bolt 30 with the upper inner end of the manhole body 10 is released, the rotating bolt protrudes over the manhole cover and the manhole for the manhole body. Keep the lid loose.

Further, the protrusion 58 may be formed on the other side of the latch 50 to be convex upward. In this case, when the other end of the latch 50 is caught by the upper inner end of the manhole body 10, the locking state can be reliably detected, so that the operator can easily know the locking state of the manhole cover 20.

Furthermore, a figure, for example, an arrow may be marked on the bolt head 34 of the rotating bolt 30 so that a user may identify a locked or released state of the manhole cover 20 according to the rotation of the rotating bolt 30. have. In this case, the rotational state of the rotating bolt can be checked directly with the naked eye, so it is easy to determine whether the manhole cover is locked.

The operation and effect of the present invention configured as described above will be described in connection with the opening or closing process of the manhole cover.

Figure 3 is a view showing the operating state of the present invention, in the case of facilities inside the manhole body 10, for example, in the case of water supply pipe to release the locked state of the manhole cover 20 to check the control valve for controlling the flow of running water The manhole cover 20 should be separated from the manhole body 10. In this case, as shown in (a) of FIG. 3, after coupling the tool lever 80 to the head of the rotating bolt 30 located in the through hole, the lever 80 is rotated in one direction. By the rotation of the lever 80, the rotating bolt 30 and the latch 50 coupled to its tip rotate in the same direction as the lever. Accordingly, the latch 50 is released from the engagement with the inner end side of the upper opening of the manhole body 10. As a result, the manhole cover 20 can be separated from the manhole body 10 to open the manhole. At this time, the rotating bolt 30 is slightly projected over the manhole cover 20 by the restoring force of the spring (S) interposed between the manhole cover 20 and the rotating bolt 30, the manhole by the stopper 40 Complete detachment from the cap is prevented.

On the contrary, when the manhole cover is closed and the lock state is started after the facility inspection in the manhole, as shown in (b) of FIG. 3, the bolt of the rotating bolt 30 protruding above the manhole cover 20 as shown in FIG. Press the rotary bolt 30 in the downward direction while being inserted into the head 34 and rotates in one direction (see arrow direction in the drawing). As the lever 80 rotates, the locking bolt 30 and the latch 50 coupled to the front end thereof also rotate in the same direction. The latch 50 rotated in one direction is caught by the inner end side of the upper opening of the manhole body 10 to prevent the manhole cover 20 from being separated from the manhole body. That is, the locking operation of the manhole cover 20 with respect to the manhole body 10 is started. At this time, the protrusion 58 is formed on the other side of the latch 50 to be convex upward. Accordingly, when the other end of the latch 50 is caught by the opened upper inner end of the manhole body 10, the operator can surely sense the locking state, so that the locking state of the manhole cover 20 can be more easily known.

According to the embodiment of the present invention described above, the manhole cover can be fastened to the manhole body or can be simply released using the tool lever. In this case, when the locked state is maintained, the manhole cover is not squeezed or arbitrarily separated from the external force, for example, the vehicle traveling and external vibration, so as not to open. As a result, facilities in the manhole can be protected while preventing pedestrian or vehicle safety accidents.

As described above, according to the inventors of the water escape prevention manhole cover of the present invention, it is possible to prevent the manhole cover is randomly opened or rattled by the external force, such as vibration caused by vehicle traffic. Accordingly, safety accidents such as vehicle overturning and pedestrian fall due to the opening of the manhole cover can be prevented in advance, and arbitrary opening is impossible without a separate tool, thereby preventing theft of the manhole cover.

What has been described above is just one embodiment for carrying out the separation prevention manhole cover according to the present invention, the present invention is not limited to the above embodiment, as claimed in the following claims of the present invention Without departing from the gist of the present invention, one of ordinary skill in the art will have the technical spirit of the present invention to the extent that various modifications can be made.

Claims (3)

The manhole cover is perforated with at least two T-shaped through-holes with a stepped inner diameter narrower than an upper portion thereof; It is inserted into the through-hole and rotated, the binding hole is drilled in the center of the cylindrical body perpendicular to the longitudinal direction of the body, and the upper end of the through-hole with the rotation torque coupled to the lever at the top of the body relative to the stepped step Rotating bolts are formed integrally with a plurality of bolt heads located in; A stopper which is fastened to the binding hole of the rotating bolt on the back of the manhole cover in a state where the rotating bolt penetrates the through hole formed in the manhole cover, and stops the detachment of the rotating bolt from the manhole cover; A plurality of fastening holes are formed at one side thereof so as to be coupled to the fastening part, and fixed on the rotating bolt through a nut coupled to the screw of the rotating bolt in the state of being fitted to the fastening part of the rotating bolt through the fastening hole. The other side is caught in the upper inner end of the opening of the manhole body while rotating in any direction by the rotation torque of the rotating bolt; latches to prevent the separation of the manhole cover; A lower end of the body of the rotating bolt is formed with a plurality of fastening parts, and a lower end of the fastening part is formed with a thread having a thread on its outer circumferential surface; On the other side of the latch, when the other end is caught in the upper inner end of the opening of the manhole body, a convex protrusion is further formed to be convex upward to detect the jam state, characterized in that the water fall prevention manhole cover. delete delete

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