KR100632448B1 - Device for locking manhole cover using bolt - Google Patents

Abstract

A manhole cover locking device using bolts is provided to reliably lock/unlock a manhole cover by simply rotating the locking bolt forward/reversely on the manhole cover, and to prevent an accident caused by separation of the manhole cover and by restricting rainwater from being infiltrated to the inner side of the manhole. A manhole cover locking device(3) comprises a manhole main body(1) having a settling sill(11) on the inner surface to install a manhole cover(2); the manhole cover inserted into the manhole main body; a locking bolt(31) inserted into a through-hole formed on the manhole cover; a holding piece(32) screw-combined with the locking bolt to be biased toward one side to a certain length; a hanging unit(12) recessed on the inner surface of the manhole main body to support the holding piece; a stopper(35) protruded on the lower surface of the manhole cover to prevent the holding piece from being excessively rotated in a rotation radius of the holding piece; a slope formed on one side of the hanging unit to contact/press the holding piece; a fixing pin(33) installed on one end of the locking bolt to limit excessive downward movement of the holding piece and to prevent the holding piece from being separated out of the locking bolt; and a packing(4) installed on the settling sill to watertightly block a gap between the manhole cover and the settling sill.

Description

Device for locking manhole cover using bolt}

Figure 1a, 1b is a perspective view showing the separation of the manhole according to the type of the manhole body according to the present invention

Figure 2a, 2b is a cross-sectional view taken by applying the manhole cover locking device type using the bolt according to the manhole body seating jaw type according to the present invention

Figure 3 is a cross-sectional view showing a state in which the manhole cover locking device is locked using a bolt according to the present invention

Figure 4 is a plan view showing the operating state of the latch of the manhole cover locking device using a bolt according to the invention

Figure 5 is an embodiment of the latch of the manhole cover locking device using a bolt according to the present invention.

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

1-manhole body 2-manhole cover

3-Lock 4-Packing

11-Seating Jaw 12-Clamp

31-Locking bolt 32-Brace

33-Pushpin 35-Stopper

36-slope

The present invention relates to a manhole cover locking device using a bolt that has a manhole cover installed on the upper part of the manhole body has a reliable locking and unlocking function by a simple forward / reverse rotation operation of the locking bolt.

The general manhole cover is inserted into the inside of the manhole body buried at the same height as the road surface so as to maintain its position only by its own weight without a separate locking device. However, due to the nature of the manhole industry where low-cost manhole products are preferred, precision manufacturing and processing operations have to be abandoned, and a large allowance between the manhole body and the manhole cover is provided to manufacture a manhole without problems at low prices. For this reason, there are many gaps between the outer diameter of the manhole cover and the inner diameter of the manhole cover insertion part, and the contact state with the seating jaw becomes poor. Risk factors that cause the direct damage of vehicles traveling on the road after the manhole cover is separated from the manhole body and indirect damage of pedestrians traveling to and from the roadside, as well as secondary damage of vehicles and pedestrians passing through the open manhole points. There was.

In order to solve this problem, a device for locking or releasing the manhole cover inserted into the manhole body has already been proposed, but such a conventional manhole cover locking device has an added shape and size that is not advantageous for the manhole cover. And cause an increase in weight or cause an excessively complex configuration, bringing considerable inconvenience during transportation and installation, and there is a problem in that the manufacturing cost is high and economic efficiency is low. In addition, the conventional manhole cover locking device has a function of simply locking the manhole cover to the manhole body, so that rainwater flows into the manhole without any resistance and contaminates the equipment installed in the ground. There is a problem that causes a large accident such as an accident.

The present invention has been made to solve all the problems of the conventional manhole as described above, the present invention is a manhole cover installed on the upper manhole on the road to be locked in the manhole body through a simple operation such as screw rotation to the vehicle coming and going The purpose of the present invention is to prevent human accidents and vehicle accidents caused by the detachment of the manhole cover.

In addition, the present invention is to provide a high locking fastening force by the screw rotation of the installed locking device in the case of the manhole requiring watertight, so that the gap between the manhole cover and the body can be completely blocked, electrical safety accident by leakage, gas leakage accident The purpose is to be able to prevent the problem that can cause a large accident at its source.

The present invention for achieving the object as described above is to prevent any separation of the manhole cover between the manhole body having a seating jaw seated on the inner circumference and the manhole cover is inserted into the manhole body In the manhole cover locking device, a manhole cover is formed with a through hole to insert a locking bolt in the through hole, the locking bolt is screwed to have a length biased to one side, the inner circumference of the manhole body is It is characterized in that the locking portion is formed a locking portion that is a groove that is caught by the internal locking.

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

Figure 1a, 1b is a perspective view showing the separation of the manhole according to the type of the manhole body according to the present invention, Figures 2a, 2b is applied to the manhole body seating jaw type locking state of the manhole cover locking device using a bolt according to the present invention 3 is a cross-sectional view showing a state in which the manhole cover locking device according to the present invention is locked, and FIG. 4 is a plan view showing a latch operation state of the manhole cover locking device according to the present invention.

As shown in Figures 1a, 1b to 4, the present invention is a manhole body (1) having a seating jaw (11) in which the manhole cover (2) is installed on the inner circumference and the manhole body (1) The manhole cover 2 is inserted and installed, and a manhole cover locking device 3 is installed between the manhole body 1 and the cover 2 to prevent any detachment of the manhole cover 2.

The manhole cover locking device (3) and the locking bolt 31 is installed through the manhole cover (2); Clamps 32 are screwed so that the length is biased to the locking bolt 31; It consists of a locking portion 12 is the rotation stops while the latch 32 is caught on the inner circumference of the manhole body (1).

And at the end of the locking bolt 31 is provided with a fixing pin 33 for limiting the movement of the latch 32 to the excessive lower portion and at the same time prevent the latch 32 from being separated from the locking bolt 31. On one side of the locking bolt 31, that is, the stopper 35 which prevents the latch 32, which is rotated in contact with the latch 32 at the opposite position of the locking portion 12, from being returned to the original locking position, Is installed. In other words, as shown in FIG. 4, a stopper 35 is formed on the bottom of the manhole cover in the rotation radius of the latch 32 to prevent excessive reverse rotation of the latch 32.

In addition, the locking portion 12 has a shape that can prevent the locking clamp 32 is fastened to the locking bolt 31 to rotate with the rotation of the locking bolt 31, that is, in various shapes such as locking jaw, locking groove Can be formed.

If necessary, as shown in FIG. 4, the clasp 32 and the clasp 12 contacting the clasp 32 form a gentle inclined surface 36 to be locked by the inclined surface 36 at the time of locking. It can also be configured to increase the effect.
That is, as shown in FIG. 4, when the clasp 32 and the clasp 12 contacting the clasp 32 form a gentle inclined surface 36, the clasp 32 is locked in the direction of the arrow in the drawing. A function of penetrating toward the locking portion 12 (the wider portion of the locking portion digs into a relatively narrow portion of the locking portion by rotation) is generated, whereby the locking portion 32 is locked. A press-fitting action is generated in (12), and the locking effect is increased by this action.

And in the case of the manhole for the purpose of requiring watertightness, the seating jaw (11) is provided with a packing (4) to block the gap with the manhole cover (2) to have a watertight, even in this case the locking structure of the present invention It can be applied effectively.

According to the present invention having the above-described configuration, when the manhole cover 2 is to be locked to the manhole body 1, the direction of the clasp 32 is opposite to the catch portion 12, that is, the inside of the manhole cover 2. In this state, the manhole cover 2 is seated on the seating jaw 11 formed in the manhole body 1.

Subsequently, when the locking bolt 31 is rotated using the rotary tool, the clamp 32 screwed to the locking bolt 31 is also rotated, and the latch 32 is formed on the manhole body 1. ), It no longer rotates. In this state, if the locking operation of the locking bolt 31 is continued, from this point, the latch 32 is lifted up and down by the thread of the locking bolt 31, and thus is firmly adhered to the locking portion 12 to achieve a firm locking state. do.

When the packing is installed on the seating jaw 11 of the manhole body 1 for watertight, the manhole cover 2 is pressed by the packing 4 installed on the seating jaw 11 by the locking force of the locking bolt 31. Since the gap between the manhole cover 2 and the seating jaw 11 allows high watertightness, rainwater is effectively blocked from penetrating into the manhole.

When the locking device of the manhole cover 2 is to be released, the locking bolt 31 is rotated in the reverse direction, i.e., in the unlocking direction, and the lock operation is reversed, thereby releasing the lock. That is, the latch 32 in close contact with the seating jaw 11 by the reverse rotation of the locking bolt 31 is lowered without rotating by the contact force, but when the contact force is weakened, the latch 32 slides with the seating jaw 11 surface or slightly. The gap is reversely rotated along the locking bolt 31.

When the latch 32 is out of the seating jaw 11, the manhole cover 2 is unlocked to be opened. At this time, the outside of the latch 32 should be able to recognize the deviation from the seating jaw (11), which can be seen as a feeling such as the sound or vibration generated by contacting the stopper (32) in the reverse rotation with the stopper 35 In addition, when the rotation is stopped by the stopper 35, the lowering is continued and the lower end of the locking bolt 31 is in contact with the pin or nut coupled for the release of the clamp 32 is no longer rotated Is also recognized.

In this state, since the manhole cover 2 is unlocked from the manhole body 1, the manhole cover 2 may be opened.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

According to the present invention described above, there is an advantage that the locking and unlocking function of the manhole cover can be completely implemented by a simple forward / reverse rotation operation of the locking bolt installed in the manhole cover, and finally, the manhole It is possible to prevent human and vehicle accidents due to the detachment of the cover, and to prevent the rainwater from penetrating into the manhole, thereby preventing problems such as electric safety accidents and gas leakage accidents. There is.

Claims (3)

Manhole cover (2) between the manhole body (1) having a seating jaw (11) for mounting the manhole cover (2) on the inner circumference and the manhole cover (2) inserted into the manhole body (1) In the manhole cover locking device (3) to prevent any separation of the The manhole cover (2) forms a through hole to insert the locking bolt 31 into the through hole, the locking bolt 31 is screwed to the locking clamp 32 to have a length biased to one side, the manhole body In the inner circumference of the (1) is formed a locking portion 12 which is a groove in which the latch is indented, and on the bottom of the manhole cover 2 to prevent excessive reverse rotation of the clamp within the rotation radius of the latch 32 The stopper 35 is formed to protrude, and one side of the locking portion 12 is formed as an inclined surface 36 so that the latch 32 is in contact with and pressed, while at the end of the locking bolt 31, the locking clamp 32 is formed. At the same time limiting the movement of the lower portion of the locking pin (32) is prevented from being released from the locking bolt 31 is provided with a fixing pin (33), the seating jaw (11) has a gap with the manhole cover (2) Characterized in that the packing (4) is installed to block the watertight Manhole cover lock with bolts. delete delete

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