KR100300737B1 - Manhole with having bolting prevention apparatus - Google Patents

Abstract

The present invention relates to a manhole equipped with a departure prevention device.

Conventionally, in order to prevent the phenomenon that the manhole cover is separated from the frame, a locking piece corresponding to each other is installed around the manhole support frame or the manhole cover to prevent the opening of the cover, but it can be opened and closed only at a certain position during opening and closing, and it is inconvenient. Operation was very inconvenient because the heavy manhole cover could be opened and closed only by rotating it at an angle.

Therefore, the present invention includes a locking groove 16 formed on the seating jaw 12 of the manhole frame 10, and opens the short side wall 22 toward the open groove 21 formed on both sides of the manhole cover 20. At the same time, the operation groove 24 is formed at the bottom of the inner side of the opening 23, and the tip portion protrudes into the opening 23 to form the locking end 32 inserted into the locking groove 16 of the manhole frame 10. And the rear end is rotatably axially coupled to the bottom of the manhole cover 20, the upper portion is provided with a stopper (34) formed with a stopper 34 flowing in the working groove 24, the stopper 34 and The elastic groove is installed between the inner grooves of the working groove 24 so that the clamp 30 can be automatically rotated toward the opening 23 so that the lid can be automatically locked and the opening of the lid can be easily and easily opened. It is.

Description

Manhole with having bolting prevention apparatus

The present invention relates to a manhole equipped with a departure prevention device, and in particular, to provide a fastener in the opening groove of the manhole cover to automatically lock the lid and at the same time to open the lid simply and easily.

In general, underground works such as power and communication cables, and water and sewage pipes are mostly installed along roads or sidewalks. Since the underground buried or water and sewage pipes should always be maintained, a manhole is installed to allow people to enter and exit at regular intervals. The manhole consists of a manhole support frame and a manhole cover seated on the upper portion thereof.

Since the manhole is a structure in which the manhole cover is simply seated on the manhole support frame by itself, the manhole cover is detached from the support frame and an accident may occur when an external shock is applied to the upper part of the manhole.

Conventionally, there are those in which locking devices are installed to prevent these things, but these locking devices are bolted to the manhole support frame and the manhole cover, or the corresponding openings are installed around the manhole support frame and the manhole cover to open the lid. There are things to prevent.

However, the manhole coupled with the bolt has the disadvantage of performing the cumbersome work of tightening and loosening the bolt when opening and closing the lid, and the manhole opened and closed by using the locking piece can be opened and closed only at a certain position when opening and closing the lid, Operation was very difficult and inconvenient because opening and closing was possible only when the manhole cover was rotated at a predetermined angle to displace the corresponding catch pieces.

The present invention has been devised to solve such a conventional closed end, the object of which is to install a fastener that automatically resiliently protrudes in the opening groove of the manhole cover to automatically lock the lid by its own weight, the manhole cover on the manhole frame It can be combined in any direction, and to provide a manhole with a departure prevention device is installed to enable easy and easy opening of the manhole cover.

1 is a perspective view of a manhole equipped with a departure prevention device of the manhole according to the present invention;

Figure 2 is an exploded perspective view showing the main part of the separation prevention device structure of the present invention manhole,

Figure 3 is a combined cross-sectional view of the departure prevention device of the manhole according to the invention,

Figure 4a, 4b is an operating state of the clamping state of the present invention locked,

Figure 5a, 5b is an operating state of the clamping state of the present invention in the open state,

6 is a perspective view of the clasp of the present invention.

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

10-manhole frame 12-seating jaw 14-inner circumference

16-Hanging groove 20-Lid 21-Opening groove

22-Short wall 23-Opening 24-Operating groove

25a, 25b-Spring groove 26-Shaft hole 27-Bolt

28-Capnut 30-Clamp 31-Shaft Bore

32-Hanging part 33-Slope 34-Stopper

35-spring

Means of the present invention for achieving the above object is a manhole consisting of a manhole frame having a seating jaw on the inner circumferential surface, and a manhole cover seated on the seating jaw of the manhole frame by having a short side wall around the bottom and forming a concave open groove on both sides. To

It includes a locking groove formed on the seating jaw upper portion of the manhole frame,

At the same time as opening the short side wall of the open groove side formed on both sides of the manhole cover at the same time to form the operation groove in the inner bottom surface,

The front end protrudes into the opening and constitutes the locking end inserted into the locking groove of the manhole frame, and the rear end is rotatably coupled to the bottom of the lid, and the upper part of the central part is provided with a stopper having a stopper flowing in the working groove.

And elastic means installed elastically between the stopper and the inner wall of the operation groove to automatically rotate the clamp toward the opening.

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

Figure 1 is a perspective view of a manhole equipped with a departure prevention device of the manhole according to the invention, Figure 2 is an exploded perspective view showing the structure of the departure prevention device of the manhole according to the invention, Figure 3 is a departure prevention device of the manhole according to the invention Joining cross section.

As shown, a seating jaw 12 in which the manhole cover 20 is seated is formed inside the manhole frame 10, and a locking groove 16 having a predetermined depth is formed in the upper inner circumferential surface 14 of the seating jaw 12. ) Is formed.

The manhole cover 20 has a short side wall 22 formed at a predetermined height around the bottom surface thereof, and a concave opening groove 21 is formed on both sides to extend the manhole cover 20.

The short side wall 22 on the side where the opening groove 21 is formed is opened at a predetermined section, and the clamping lever 30 is rotatably installed in the opening 23 in the outward direction. The catch 30 has a shaft hole 31 formed at the rear end thereof to be rotatably coupled to the bottom of the manhole cover 20, and the front end is bent at a right angle as shown in FIG. 6, and the bottom end forms an inclined surface 33. 32 is inserted into the engaging groove 16 of the manhole frame 10 through the opening 23, the stopper 34 protruding upward is formed in the center.

A shaft hole 26 is formed in the manhole cover 20 at a position coincident with the shaft hole 31 of the clamp 30 so that the shaft hole 31 of the clamp 30 and the shaft hole 31 of the manhole cover 20 are formed. ) Is inserted into the bolt 27 formed only at the end of the thread and fixed to the cap nut 28 at the top of the manhole cover 20. And the operating groove 24 is formed in the position corresponding to the stopper 34 of the clamp 30 so that the clamp 30 can flow in the operating groove 24, the back and rear of the clamp 30 The spring groove 25a, 25b is formed in the inner surface of the operation groove 24 corresponding to the spring groove 25a, 25b, and the spring 35 is elastically installed. At this time, the clamp 30 is rotated to the outside by the spring 35, the stopper 34 is caught by the side end of the operation groove 24 is no longer the clamp 30 is rotated. At this time, a part of the stopper 34 and the catch 30 is exposed to the opening groove 21, and the exposed degree is only exposed by the exposed length of the locking end (32). In addition, the upper end of the stopper 34 of the clamping mechanism 30, that is, the upper end of the opening direction of the opening groove 21 may be formed to be inclined to guide the tool inserted at the time of opening.

Looking at the operating state of the present invention having such a structure as follows.

Figures 4a, 4b is an operating state diagram of the locking clasp of the present invention is locked, Figures 5a, 5b is an operating state diagram of the open clasp of the present invention.

As shown, when the manhole cover 20 is seated on the manhole frame 10, the locking end 32 of the protruding clamp 30 is caught by the upper end of the manhole frame 10. However, because the bottom surface of the locking end 32 forms an inclined surface 33 inclined downward inward, the clasp 30 is retracted while compressing the spring 35, and the manhole cover 20 is the manhole frame by its own weight. The seating jaw 12 of 10) is smoothly seated. At this time, the retracting lock 30 is retracted by descending on the inner circumferential surface of the manhole frame 10 and then is moved forward by the elastic force of the spring 35 that has been compressed when it comes to the position of the locking groove 16. In this state, even if an external shock is applied to the upper portion of the manhole cover 20 such that the vehicle passes, it is not opened by the lock 30.

In addition, when the catch 30 moves forward, the stopper 34 is caught by the catching groove 24 so that the catching end 32 is advanced only a proper length, and the center of the catch 30 is also exposed in the open groove 21 only as much as appropriate. In particular, in addition to the center portion of the clamp 30, the stopper 34 is also partially exposed and the degree of exposure of the locking end 32 and the center of the clamp 30 is the same.

On the other hand, if the manhole cover 20 should be opened for maintenance of underground pipelines, one of the open grooves 21 of the open grooves 21 formed on both sides of the manhole cover 20 with a pointed extension such as a pickaxe or a lever 21) and then support the top of the manhole frame 10 to lift the manhole cover 20 by the lever principle. At this time, if the end of the extension is pushed in the stopper 34 is fully inserted and then lift the lid, the end of the extension is moved toward the open groove 21 while the stopper 34 and the catch 30 exposed to the open groove 21 ) Press the center part front side. Therefore, the clamp 30 is retracted while pressing the spring 35 as shown in Figure 4a, 4b and at the same time the locking end 32 is also retracted. Particularly, when lifting the manhole cover 20 by extension, the end of the extension reliably presses the clamp 30 so that the locking end 32 completely exits the locking groove 16 of the manhole frame 10. Therefore, the manhole cover 20 is easy to open, even if only the retracting clamp installed in one of the opening groove of the two opening grooves 21 is opened, there is an advantage that it is very convenient to use.

As described above, the present invention is installed so that the brace is elastically rotated to the outside of the manhole cover to close the manhole cover on the manhole frame is automatically locked while descending by its own weight does not open even if any impact is applied from the outside. Rather, there is no directivity, which can be locked in any direction. In addition, when opening, the extension is inserted into one of the opening grooves formed on both sides of the manhole cover and lifted up, so that the locking key retreats and escapes from the locking groove of the manhole frame.

Claims (2)

A manhole frame 10 having a seating jaw 12 on its inner circumferential surface, and a short side wall 22 around its bottom surface, and open grooves 21 concave on both sides are formed on the seating jaw 12 of the manhole frame 10. In the manhole consisting of a manhole cover 20 seated, It includes a locking groove 16 formed on the seating jaw 12 of the manhole frame 10, Opening the short side wall 22 on the side of the opening groove 21 formed on both sides of the manhole cover 20 and at the same time to form the operation groove 24 in the bottom surface of the opening 23, The front end protrudes into the opening 23 and constitutes the locking end 32 inserted into the locking groove 16 of the manhole frame 10. The rear end is rotatably coupled to the bottom of the manhole cover 20, and the upper part of the center part. In the installation groove 24 is provided with a stopper (34) formed with a stopper (34) flowing in, Manhole is installed between the stopper 34 and the operation groove 24, the elastic member for resilient means for automatically rotating the lock 30 toward the opening 23 toward the opening 23. The manhole according to claim 1, wherein the bottom of the locking end portion (32) forms an inclined surface (33) inwardly downward.