KR20090026550A - Manhole cover and locking device thereof - Google Patents

Abstract

A manhole cover is provided that the secession of the manhole cover is prevented since the support frame and manhole cover are unitized in adamantly through the locking bar. A manhole cover comprises a support frame(20) forming the gateway for incoming and outgoing on upside, a manhole cover(10) in which the key insert groove passes through in center and which is formed, a connection rod(30) admitted inside the support frame, a rotational plate(40) which is arranged in order to rotate in the center of the connection rod, a locking bar(32) slid with the rotation of the rotational plate from the center of the connection stick towards the end part.

Description

Manhole cover and locking device

The present invention relates to a manhole cover and a manhole cover opening and closing device, in particular to install a locking bar under the manhole cover to collectively improve the departure and theft, which was a problem in the existing manhole cover and the end of the lock bar is inside the support frame It is tooth-coupled to the rotating body on the connecting rod accommodated in the manhole cover by rotating the head of the rotating body using a special key on the upper portion of the locking bar to be inserted into or released from the fixing hole of the support frame to achieve locking / opening.

In general, as shown in Figure 1, the manhole cover 10 is a communication passage or sewage pipe, etc., the entrance is formed on the upper side so that the worker can enter the pipeline to work on the ground, and the surface buried exposed to the plane And it is composed of a support frame (2) to form an entrance in the center, and a manhole cover (1) to seal the entrance by being seated on the rib (3) inside the support frame. In particular, the handle is disposed on the upper side of the manhole cover (1) is exposed so that pull the handle (4) from the outside to separate the manhole cover from the support frame (2) to open the manhole cover.

On the other hand, the manhole cover (1) of the manhole as described above is simply seated on the support frame (2) without a separate binding means, the public can easily open the lid, the point of time when the price of raw materials is formed at a high price in recent years In the case of frequent theft accidents, there was a problem such that the lid is easily peeled off due to the shock transmitted from the vehicle being driven, causing a safety accident.

An object of the present invention is to devise to solve the above problems, to provide a manhole cover of the structure that can be easily opened and closed to prevent the departure and theft, which is a problem of the existing manhole cover complex.

In order to achieve the above object, the manhole cover according to an embodiment of the present invention includes a support frame having an entrance for entrance in the upper side; A manhole cover which seals the entrance and has an outer circumferential surface formed on the outer circumferential surface thereof and a key insertion groove penetrates at the center thereof; A connecting rod accommodated in the support frame; A rotating plate disposed to rotate in the center of the connecting table; It is disposed on the connection object and includes a locking bar that slides toward the end from the center of the connecting table by the rotation of the rotary plate.

Here, the pinion gear teeth are provided on the side of the rotary plate, and complementary rack gear teeth are formed on the side of the lock bar to engage the teeth of the rotary plate, and the rotational movement of the rotary plate is converted to the linear movement of the lock bar. do.

In addition, holes are formed in the edge portion of the manhole cover and the inner wall of the support frame into which one end of the locking bar can be inserted.

On the other hand, the connecting rod is formed with a guider for guiding the linear slide motion of the lock bar.

On the other hand, protruding pins spaced apart from each other to face each other are formed on the upper side of the rotating plate.

On the other hand, support ribs are formed on the inner surface of the support frame is seated on both side ends of the connecting rod.

On the other hand, the lower end of both ends of the connecting rod is formed with an alignment protrusion, the support rib is formed with an insertion groove into which the alignment protrusion is inserted.

The present invention provides a manhole cover opening and closing device for opening and closing the manhole cover of the structure as described above, the manhole cover opening and closing device, the body having a long shape; It is formed in one end of the main body, and is inserted through the key insertion groove comprises a key for rotating the rotary plate integrally formed on the protruding pins in contact with the protruding pins.

The present invention relates to a manhole cover and an opening and closing device for opening and closing the manhole cover, bar utilizing the present invention has the following effects,

First, the manhole cover on the road is always inherent in the risk of large-scale human accidents, such as an eccentric load that is overturned or dislodged when a heavy vehicle passes, causing accidents for subsequent vehicles or pedestrians falling into the manhole room. When applying the technology of the invention through the lock bar locking device to prevent the death of the manhole cover by integrating the support frame and the manhole cover firmly, it can prevent a large casualty accident,

Second, the manhole cover switchgear can be easily opened and closed when necessary,

Third, in order to open and close the manhole cover, the manhole cover can be opened and closed only by inserting a key suitable for a predetermined key groove, thereby preventing the manhole cover from being opened by a person other than the person concerned.

Fourth, it is possible to control the connection between the manhole cover and the support frame without opening the manhole cover.

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

Figure 2 is an exploded perspective view of the manhole cover according to an embodiment of the present invention.

As shown in Figure 2, the manhole cover 100 according to the present invention is a support frame 20 having a doorway for access to the upper side and a manhole cover 10 disposed on the upper side of the support frame 20 to cover the support frame 10 ).

The manhole cover 10 has a disk shape, and a key insertion groove 12 is formed at the center thereof. The key insertion groove 12 is formed through the manhole cover 10, and has a predetermined shape into which the key of the manhole cover opening and closing device to be described later can be inserted.

The manhole cover 10 is formed on the outer circumferential surface of the edge portion 14 to a predetermined thickness extending downward from the manhole cover 10. One or more alignment protrusions 18 are formed at the edge portion 14 to protrude in the circumferential outward direction at regular intervals. In FIG. 2, four alignment protrusions 18 are formed at intervals of 90 degrees.

Under the manhole cover 10, the support frame 20 is mounted inside the support frame 20. On the connecting table 30, a pair of locking bars 32 are arranged to reciprocate and slide in an end direction of the connecting table, and the locking bars 32 are guided by the guider 34. As shown in FIG. 2, the locking bar 32 is not necessarily limited to two and may be arranged in plural within a range that does not interfere with each other's slide movement.

One end of the locking bar 32 is coupled in a complementary tooth to the rotating plate 40 (see Fig. 3) installed in the center of the connecting table 30. Meanwhile, protruding pins 42 (refer to FIG. 3) disposed to be spaced apart from each other are disposed on an upper portion of the rotating plate rotatably disposed at the center of the connecting table 30.

On the other hand, by using a specific key in the key insertion groove 12 formed in the center of the manhole cover 10 by inserting the key into the space between the protruding pins 42 to rotate the rotating plate 40, The locking bars 32 arranged alternately with respect to the entirety 40 slide forward or backward.

On the other hand, the edge portion 14 of the manhole cover 10 is formed with a hole 16 in a position corresponding to the lock bar (32). In addition, a hole 24 is formed in the inner wall of the support frame 20 at a position corresponding to the locking bar 32.

Therefore, in the state in which the connecting table 30 and the manhole cover 10 are mounted on the support frame 10, when the locking bar 32 slides forward in the end direction of the connecting table 30, the locking bar 32 is moved. The end of the penetrating hole 16 of the rim portion 14 and is fitted into the hole 20 of the support frame 10, the manhole cover 10, the connecting table 30, by the locking bar 32, And the supporting frame 10 may be fixed integrally. As shown in the figure, when the fixing pin 33 is formed at the end of the locking bar 32, the fixing pin 33 passes through the holes (16, 20). Therefore, it may be referred to and included in the other end of the locking bar 32 of the fixing pin 33 herein, or may be an additional component protruding from the other end.

On the other hand, the support ribs 26 protrude inwardly so as to allow the connecting rod 30 to be seated on the inner wall of the support frame 10. The supporting ribs 26 are located at positions of the ends of the connecting rod 30. Correspondingly arranged on the inner wall of the support frame (10). In addition, in order to align the connecting rod 30 and the support rib 26, an alignment protrusion 36 protrudes from an end of the end of the connecting rod 30, and the alignment protrusion portion is formed on the support rib 26. An insertion groove 22 having a diameter into which the 36 can be inserted is formed. The alignment protrusion 36 and the insertion groove 22 are formed at positions corresponding to each other.

Meanwhile, when the manhole cover 10 is seated on the support frame 20, the inner wall of the support frame 20 has a complementary protrusion corresponding to the protrusion alignment portion 18 of the manhole cover 10 for alignment thereof. The accommodation part 28 is formed.

FIG. 3 is a perspective view illustrating in detail the configuration of the connecting bar 30 of FIG. 2 and the locking bar 32 arranged at the connecting object, and FIG. 4 is a plan view of the connecting rod assembly of FIG. 3.

3 and 4, alignment protrusions 36 are formed on the lower surfaces of both ends of the connecting table 30. As described above, the alignment protrusion 36 is a component for precisely aligning the connecting table 30 with the support ribs 26 of the support frame 10.

On the other hand, the connecting table 30 is formed to have a length and width that can be accommodated inside the support frame (10). In the drawing, the connecting rod is shown in a long plate shape, but is not necessarily limited thereto, and the connecting rod 30 may be in the form of a disc having a size that can be accommodated inside the support frame 10. If the connecting rod 30 is in the form of a disk, the diameter of the connecting rod 30 is such that the connecting rod 30 can be placed on the support rib 26 to be seated.

In the center of the connecting table 30 is provided with a rotating plate 40 mounted to enable the rotational movement. On the other hand, two locking bars 32 are disposed around the rotary plate 40 to linearly slide by sliding along the upper surface of the connecting table 30.

The locking bars 32 are alternately arranged in the tangential direction of the circumference of the rotating plate 40. One end of the locking bar 32 is disposed adjacent to the rotating plate 40, the other end of the locking bar 32 is disposed toward the end of the connecting table 30.

On the other hand, the pinion gear teeth 38a are formed on the side of the rotating plate 40, and the rack gear teeth 38b are formed at one end of the locking bar 32 adjacent to the rotating plate 40. The pinion gear teeth 38a and the rack gear teeth 38b are complementarily formed to allow gear engagement with each other.

Accordingly, the pinion gear teeth 38a formed on the rotating plate 40 and the rack gear teeth 38b formed at one end of the locking bar 32 form a tooth 38 which meshes with each other to move. In this structure, when the rotary plate 40 is rotated, power is transmitted to the rack gear tooth 38b meshing with the pinion gear tooth 38a formed on the side of the rotary plate 40 to form the rack gear tooth 38b. The lock bar 32 makes a linear motion.

A guider 34 surrounding the lock bar 32 is disposed above the connecting table 30 to guide a path in which the lock bar 32 slides and moves linearly. Lubricant or bearing may be disposed in the guider so that the locking bar 32 may smoothly pass through the guider 34.

Including the fixing pin 33, the locking bar 32, the locking bar 32, the connecting rod 30 from the center by the engagement rotation of the pinion gear teeth 38a and the rack gear teeth 38b. When turned in the direction of the end of the connecting rod 30 is formed to a length that can protrude outward.

In FIGS. 3 and 4, only two locking bars 32 are disposed on the connecting rod 30, but are not necessarily limited thereto. You can also place more than two lock bars on the floor.

When arranging the lock bars on the connecting table, the rotation bars 40 may be disposed radially with respect to each other, but the locking bars may be arranged to be alternate with each other in the tangential direction of the circumference of the rotation plate.

On the other hand, protruding pins 42 are disposed on the upper side of the rotating plate 40 so as to be symmetrically spaced apart from each other in a direction opposite to the rotation axis of the rotating plate 40. For example, the protruding pins 42 may be formed in a fan shape. When the protruding pins 42 have a fan shape, as shown in FIGS. 3 and 4, the arc portions face the outer circumferential surface of the rotating plate 40, and the straight portions are alternately arranged on the virtual extension line. do. Therefore, when a key is inserted between the protruding pins 42, a space in which the key can be inserted is secured. On the other hand, the protruding pins 42 are formed integrally with the rotating plate 40 or are firmly fixed to the rotating plate 40.

3 and 4, when the rotating body 40 is rotated in the clockwise direction, the locking bar 32 slides in the end direction of the connecting rod and is deployed. When the whole 40 rotates counterclockwise, the locking bar 32 slides toward the center of the connecting table.

5 is a plan view showing a state in which the connecting table 30 and the manhole cover 10 are coupled to the support frame 10 in sequence. In FIG. 5, the components arranged on the connecting table 30 and the connecting object are shown as broken lines because they are actually covered by the manhole cover 10.

Referring to FIG. 5, the key insertion groove 12 formed in the center of the manhole cover 10 is spaced apart from the protruding pins 42 disposed on the upper side of the rotating plate 30 disposed in the center of the connecting table 30. Arranged in space. Therefore, by inserting the key into the key insertion groove 12, it is possible to rotate the key by placing the key in the space between the protruding pins (42).

The locking bar 32 is moved in the direction of the end of the connecting table 30 by the rotation of the rotary plate 40 through the hole formed in the edge portion 14 of the manhole cover 10 and the inside of the support frame 20 It is arrange | positioned inside the hole 24 formed in the side wall. Therefore, the support frame 20, the connecting table 30, the manhole cover 10 is in a state of being integrally coupled to each other.

6A and 6B are side cross-sectional views in combination with a drawing showing an assembled state based on a section taken along the line VI-VI of FIG. 5.

6A and 6B, the locking bar 32 disposed on the connecting rod 30 slides to an end portion of the connecting rod, and thus, the fixing pin 33 formed at the other end of the locking bar 32. Or the other end including the fixing pin 33 passes through the hole 16 formed in the edge portion 14 of the manhole cover 10 and is simultaneously formed in the hole 24 formed in the inner wall of the support frame 20. It can be seen that the supporting frame and the connecting rod and the manhole cover are assembled integrally.

7 is a front view of the opening and closing device that can open and close the manhole cover according to an embodiment of the present invention having the structure as described above.

Referring to FIG. 7, the manhole cover opening and closing device 50 is formed of an elongated rod-shaped main body 58 and a lower end of the main body and is inserted through the above-described key insertion groove 12 to protrude the aforementioned pins 42. ) And a key 52 for rotating the rotating plate 40. The key 52 is connected to the main body 58 by the hinge portion 54 so that the key 52 can be hinged with respect to the main body 58. On the other hand, the support foot 56 is connected to the predetermined position of the main body so that the hinge movement with respect to the main body 58 is also mounted.

8 shows a process of opening the manhole cover according to the present invention using the opening and closing device described above. As shown in FIG. 8, the key 14 is inserted into the key insertion groove 12 of the manhole cover 10 and positioned in the spaced space between the protruding pins 42, and then the main body 58 is rotated counterclockwise. When rotated, the rotating plate on the connecting table 30 is rotated accordingly so that the other end of the locking bar is pulled out of the hole of the support frame, and then is pulled out of the hole formed in the rim of the manhole cover. Therefore, the supporting frame and the connecting rod and the manhole cover are in a state of being in contact with each other, but are actually prepared to be separated. When operated in reverse, the half needle frame, the connecting rod and the manhole cover are brought into a combined state again.

In FIG. 8, the main body 58 of the open / close device is shown with a broken line, and the main body 58 is shown in a state in which the rotating body is rotated. The solid line shows the key 14 with the key insertion groove 12. In the state inserted in the hinge portion 14 by the hinge movement relative to the bent, it shows a state in which the support foot 56 hinged to the main body 58 is in contact with the ground.

9 is a view showing a state of lifting the manhole cover 10 through the opening and closing device.

The manhole cover 10 is actually an object of considerable weight and is not easy to lift by hand. Therefore, in order to lift the manhole cover 10, the support foot 56 acts as a center of the lever with respect to the main body of the opening and closing device, so that the manhole cover 10 can be lifted with less force.

At this time, the key 14 is a manhole in a state in which the key insertion groove and the key are displaced from each other by rotating the main body 58 so that the elongated shape is not aligned and aligned with respect to the key insertion groove 12. The lid 10 will be lifted up.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

The invention can be used in the art of manholes.

1 is an exploded perspective view of a typical manhole cover.

Figure 2 is an exploded perspective view of the manhole cover according to an embodiment of the present invention.

3 is an enlarged partial perspective view of the connecting rod of FIG. 2.

4 is a plan view of the connecting rod of FIG. 3.

5 is a plan view illustrating a coupled state of a manhole cover according to an embodiment of the present invention.

6A and 6B are separate and combined cross sectional views taken along line VI-VI of FIG. 5.

7 is a front view of the manhole cover opening and closing device for opening and closing the manhole cover of FIG.

8 is a view illustrating a process of opening the manhole cover of FIG. 2 with a manhole cover opening and closing apparatus.

FIG. 9 is a view illustrating a state in which a manhole cover of the manhole cover opened in FIG. 8 is lifted by an opening and closing device.

<Brief description of symbols for the main parts of the drawings>

100: manhole cover 10: manhole cover

12: key insertion groove 14: edge portion

16: hole 18: alignment protrusion

20: support frame 22: insertion groove

24: hole 26: support rib

30: connecting rod 32: locking bar

34: guider 36: alignment projection

38: tooth 40: rotating plate

42: protruding pin 50: switchgear

52: key 54: hinge portion

56: support foot 58: main body

Claims (8)

A support frame having an entrance for entrance to and from an upper side thereof; A manhole cover which seals the entrance and has an outer circumferential surface formed on the outer circumferential surface thereof and a key insertion groove penetrates at the center thereof; A connecting rod accommodated in the support frame; A rotating plate disposed to rotate in the center of the connecting table; And a lock bar disposed on the connection object and sliding from the center to the end by rotation of the rotating plate. The method of claim 1, Pinion gear teeth are provided on the side of the rotating plate, and complementary rack gear teeth are formed on the side of the locking bar to engage the teeth of the rotating plate, so that the rotational movement of the rotating plate is converted to the linear movement of the locking bar. Manhole cover characterized by. The method of claim 2, The manhole cover, characterized in that the hole in which the one end of the locking bar is inserted into the edge portion of the manhole cover and the inner wall of the support frame, respectively. The method of claim 1, And a guider configured to guide the linear slide motion of the locking bar. The method of claim 1, The manhole cover, characterized in that the upper side of the rotating plate is formed with protruding pins spaced apart to face each other. The method of claim 1, A manhole cover, characterized in that the support ribs are formed on the inner surface of the support frame is seated on both ends of the connecting rod. The method of claim 6, Manhole cover, characterized in that the alignment projection is formed on the lower surface of both ends of the connecting rod and the insertion rib is formed in the support rib is inserted into the alignment projection. A manhole cover opening and closing device for opening and closing the manhole cover of claim 1, A long shape body; The manhole cover opening and closing device is formed on one end of the main body, the key is inserted through the key insertion groove to contact the protruding pin to rotate the rotary plate integrally formed on the protruding pin.

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