KR200369960Y1 - Manhol cover security apparatus - Google Patents

Abstract

The present invention relates to a security device for preventing the separation of the manhole cover, in particular to form a ring in the manhole reinforcement, and the corresponding manhole cover is provided with a locking clasp locked in the ring by rotating in and out by the operation of the jig And it relates to a manhole cover security device to be able to easily lock the manhole cover.

The configuration of the present invention, in the manhole reinforcement provided with a manhole cover, attached to the bottom surface of the manhole cover, the housing having a shaft on the side and a latch hole on one side, and a shaft having a shaft hole and a rotating jaw on one side A branch is provided to be rotatably coupled to the shaft, and the other end of the clasp rotates in and out of the latch hole, and a spring is elastically installed around the shaft of the housing between the housing and the clasp to give the restoring force of the clasp; Has a shaft support for exposing the shaft support and the shaft and the closing plate is fixed to the upper portion of the housing is attached to the clasp attached to one side of the bottom of the manhole cover, and the manhole corresponding to the end of the clasp exposed by the clasp hole A latch ring that is fitted with an end portion of the clasp, a catching piece provided on a manhole cover opposite to the clasp, and the catch A manhole is formed in the manhole cover to enable the operation of the shaft and the shaft support of the housing to enable the operation of the clasp through the latch ring and the separate jig that the end of the locking piece is inserted into the manhole to the corresponding to achieve do.

The present invention of such a configuration has the advantage that the opening and closing operation is very easy since the manhole opening and closing operation by inserting a small jig into the jig groove while rotating.

In addition, once the manhole cover is locked, the clasp is inserted into the clasp fixing groove so that the rotation is prevented, so that the clasp is not detached from the clasp.

In addition, since the clasp is protected from the external harsh environment by the housing, there is no corrosion and the resulting failure, and the structure is simple, making it easy to manufacture and reducing the manufacturing cost.

Description

Manhole cover security apparatus

The present invention relates to a security device for preventing the separation of the manhole cover, in particular to form a ring in the manhole reinforcement, and the corresponding manhole cover is provided with a locking clasp locked in the ring by rotating in and out by the operation of the jig And it relates to a manhole cover security device to be able to easily lock the manhole cover.

In general, a manhole cover is seated and coupled to a manhole cover installed in an opening of a manhole, and the manhole cover is detached to the outside by a dynamic load applied as the vehicle passes by, because the manhole cover is simply structured to rest on a manhole cover. There was a problem that a severe impact sound is generated by the flow, and there is a fear of causing a safety accident as the lid is opened by the water flowing back inside the flood. In recent years, as theft accidents of manhole covers are caused by material accidents, installation of security devices is required to prevent safety accidents and theft of manhole covers.

However, the manhole cover security device installed in the manhole reinforcement is always exposed to the harsh environment such as moisture, dust, dirt, and sewage, so that corrosion is promoted and failure occurs frequently, and the operation of the security device is caused by foreign matter. In many cases, the opening and closing of the manhole cover becomes very difficult. Due to this cause, the maintenance work of unnecessary manhole reinforcement has to be accompanied, while the maintenance cost of many manhole reinforcements is required, and workers are avoiding the work of manhole reinforcement installed with such a security device.

Accordingly, an object of the present invention is to provide a manhole cover security device that can be operated in a harsh environment without trouble and convenient to operate, and can have reliability in locking operation.

In addition, its purpose is to provide a manhole cover security device that is simple in structure and easy to manufacture and low in manufacturing cost.

1 is a perspective view of a manhole cover and manhole retractor having a security device of the present invention.

Figure 2 is a bottom view of the manhole cover having a security device of the present invention.

Figure 3 is a sectional view showing the installation state of the manhole cover security device of the present invention.

4A and 4B are enlarged views of a portion 'A' and a portion 'B' of FIG. 2.

Figure 5 is an exploded perspective view showing the structure of the manhole cover security device according to the present invention.

Figure 6 is an assembly view showing the structure of the manhole cover security device according to the present invention.

Figure 7a, 7b is a cross-sectional view showing the operation of the manhole cover security device according to the present invention.

Figure 8 is a cross-sectional view showing the structure of the manhole cover security device according to the present invention.

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

1-Manhole retraction 12-Clasp 14-Hook

2-manhole cover 20-clasp 21-housing

212-Flange 213-Shaft 214-Shackle Hole

215-Hasp 22-Hasp 222-Shaft Bore

223-Shaft Support 224-Jam Jaw 23-Spring

24-Finishing plate 241-Shaft groove 41-Operator

50-Jig 52-Hanging groove 54-Handle

60-jam

The present invention for achieving the above object,

In the manhole extension with a manhole cover,

A housing attached to a bottom surface of the manhole cover, the housing having a shaft at one side and a latch hole at a side thereof;

A shaft support having a shaft hole and a rotating jaw on one side thereof is rotatably coupled to the shaft, and the other end of the latch rotates in and out of the latch hole;

A spring that is elastically installed around the axis of the housing between the housing and the clasp to give the restoring force of the clasp;

A clasp bundle having a shaft groove for exposing the shaft support portion and the shaft and fixed to the upper portion of the housing and attached to one side of the bottom surface of the manhole cover;

A mantle ring corresponding to the end of the clasp exposed to the clasp hole, the clasp ring being inserted by the end of the clasp;

A catch piece provided on the manhole cover on the opposite side of the clasp;

A clasp hook that is inserted into the end of the locking piece is inserted into the manhole to the corresponding locking piece and

The operation hole is formed in the manhole cover to enable the operation of the shaft and the shaft support of the housing to enable the operation of the latch through a separate jig is achieved.

Hereinafter, with reference to the accompanying drawings the configuration of the subject innovation will be described in detail.

1 is a perspective view of a manhole cover and a manhole cover having a security device of the present invention, Figure 2 is a bottom view of the manhole cover having a security device of the present invention, Figure 3 is a state of installation of the manhole cover security device of the present invention 4A and 4B are enlarged views of the 'A' part and the 'B' part of FIG. 2, FIG. 5 is an exploded perspective view showing the structure of the manhole cover security device according to the present invention, and FIG. Assembled view showing the structure of the manhole cover security device according to, Figure 7a, 7b is a cross-sectional view showing the operation of the manhole cover security device according to the present invention.

According to the drawings, the manhole cover device 2 is seated on the upper part of the manhole retractor 1 is provided with a manhole security device.

The illustrated manhole cover (2) security device is a clasp bundle (20) attached to the manhole cover (2), the clasp ring (12) and the hook is installed on the manhole cover (1) corresponding to the clasp bundle (20) It consists of a locking piece (60) installed at the opposite side of the iron ball 20 and a manhole fixing (1) corresponding to the locking piece (60).

The clasp 20 is composed of a housing 21 and a clasp 22 pivoting in and out of the housing 21. The housing 21 has a rectangular box shape with an open upper portion, and has flanges 212 formed at upper ends of both sides thereof. The housing 21 has a vertical axis 213 at one inner side thereof, and the clasp 22 can be mounted on one side thereof. The clasp hole 214 is formed. At this time, the upper part of the end of the clasp hole 214 adjacent to the shaft 213 is formed with a clasp fixing groove 215 about the width of the clasp 22.

The clasp 22 has a structure of a plate body having a length and width enough to be accommodated in the housing 21, the shaft hole 222 is inserted into one side of the shaft 213 of the housing 21 and A shaft support 223 having the same diameter as the shaft hole 222 and having a locking jaw 224 for rotation on both upper ends thereof is integrally connected in parallel with the shaft hole 222. The clasp 22 is coupled to the shaft hole 222 and the shaft support portion 223 in the shaft 213 of the housing 21 to be rotated about the shaft 213.

In addition, a spring 23 is provided around the shaft 213 between the bottom of the housing 21 and the clasp 22 so that the clasp 22 has a lifting elastic restoring force. In particular, the spring 23 is a torsion spring, one end of which is supported by the housing 21 and the other end of the latch 22 to have a tension to rotate the latch 22 in one direction. It is not necessary to limit the direction of the tension, but it would be desirable to act primarily in the direction of rotating the latch 22 in the reverse direction of the lock.

The clasp 22 is rotated upward by the spring 23 and then lifted upward to be inserted into the clasp fixing groove 215 of the clasp hole 214 so that the left and right pivots do not rotate. Inside, it will be in close contact with the lifted up toward the closing plate 24 of the upper portion to be described later. In this state, since it is located above the latch hole 214 of the housing 21, the rotation operation of the latch 22 is impossible.

On the other hand, the closing plate 24 is coupled to the upper portion of the housing 21, the shaft groove 241 is formed in a position corresponding to the shaft 213, the shaft 213 and the shaft support portion 223 around the shaft The top is exposed.

In addition, the manhole cover 2 corresponding to the upper end of the shaft 213 and the shaft support portion 223 of the housing 21 has a through hole 41 is formed through the jig (50) by the operation hole 41 The clasp 22 can be rotated by inserting. The jig 50 has a lower end that can be inserted into the operation hole 41 while forming a tubular shape such as the shaft support part 223, and a lower end corresponding to the locking jaw 224 of the upper end of the shaft support part 223. The groove 52 is formed, and the handle 54 is formed at the top to facilitate rotation.

On the other hand, the clasp ring 12 is installed in the manhole (1) part corresponding to the place where the clasp 22 of the clasp 20 is rotated and projected, the clasp ring 12 is inverted 'U' shape It consists of a structure having a flange (212) bent at both ends is screwed (bolt) to the manhole (1). Accordingly, when the clasp 22 is rotated and protruded, the end of the clasp 22 is located in the clasp 12 so that the end of the clasp 22 is not caught and opened by the clasp 12 even when the manhole cover is lifted up.

In addition, the catch piece 60 installed on the opposite side of the clasp 20 forms a plate shape bent in a crank structure and the upper end is screwed (bolt) to the bottom of the manhole cover 2, the opposite end is rotated protruding It faces toward the end opposite to the end of the clasp 22.

In addition, the mandrel 1 corresponding to the end of the locking piece 60 is provided with a locking ring 14 having the same structure as the clasp 12 for inserting and fixing the locking piece 60.

Looking at the operation of the manhole cover security device of the present invention having such a structure as follows.

In the state in which the manhole cover 2 is opened, the clasp 22 is inserted into the housing 21. In this state, when the manhole cover 2 is seated on the manhole cover 1, first, the end of the manhole cover 2 on which the catching piece 60 is formed is lowered so that the end of the catching piece 60 is closed by the catch ring ( 14) Insert it into the seat and lower the other side.

When the seating of the manhole cover 2 is completed, the lower end of the jig 50 is inserted into the operation hole 41. At this time, as the shaft 213 is inserted into the lower center of the jig 50, the locking jaw 224 of the shaft support part 223 is correspondingly coupled to the locking groove 52 at the lower end thereof. In this state, when the jig 50 is pressed downward, the shaft support part 223 descends on the shaft 213 and the latch 22 descends while compressing the spring 23. In addition, when the latch 22 is lowered to the same height as the latch hole 214 and the jig 50 is rotated in the direction of the latch hole 214, the locking jaw 224 and the jig 50 of the shaft support 223 are rotated. Since the shaft support part 223 is integrally rotated by the locking groove 52 at the bottom thereof, the clasp 22 rotates, and the end of the shaft support part 223 rotates out of the clasp hole 214.

When the clasp 22 is rotated in this manner, the free end of the clasp 22 is inserted into the clasp ring 12 to be engaged, and the elastic force of the spring 23 that is compressed when the jig 50 is detached in the state where the clasp 22 is rotated is completed. The clasp 22 is lifted and inserted into the clasp fixing groove 215 to be seated. At this time, since the latch 22 is inserted into the latch fixing groove 215, there is no fixed left and right rotation.

When the manhole cover 2 is locked by the manhole cover security device as described above, the ends of the clasp 22 and the catching piece 60 on the clasp ring 12 and the catch ring 14 provided on both sides of the manhole cover 1. Since the end of is inserted and hung, the lid is not opened by any impact, and the manhole cover 2 is not opened even if the manhole cover 2 is forcibly lifted.

On the other hand, when the manhole cover 2 is opened from the manhole retractor 1, the shaft 213 is inserted into the lower center of the jig 50 while inserting the lower end of the jig 50 into the operation hole 41. In addition, the lower locking groove 52 is correspondingly coupled to the locking jaw 224 of the shaft support 223.

In this state, when the jig 50 is pressed downward, the shaft support part 223 descends on the shaft 213, and the latch 22 descends while compressing the spring 23 and is separated from the latch fixing groove 215. do. At this time, when the jig 50 is rotated in the opposite direction as when the manhole cover 2 is locked, the latch 22 rotates in the opposite direction and is inserted into the latch hole 214 to be received into the housing 21. When the jig 50 rotated while pressing is removed, the latch 22 is brought into close contact with the elevating closing plate 24 to the upper part of the housing 21 by the elasticity of the spring 23. Therefore, the manhole cover 2 is freed from the manhole cover 1, so the manhole cover 2 end of the side where the clasp 22 is installed is lifted from the manhole cover 1 and the hook 60 on the opposite side is caught. When the manhole cover 2 is lifted off from (14), the manhole cover 2 can be easily separated from the manhole cover 1.

8 is a cross-sectional view showing the structure of the manhole cover security device according to the present invention, if necessary, may be provided with a clasp bundle (20 ') of the same structure instead of the locking piece 60, as shown, The opening and closing operation is carried out by seating the manhole cover (2) to the manhole reinforcement (1) and then maneuvering the clasps (22) and (22 ') by manipulating both clasps (20, 20') through the jig (50). The latches 12 and 14 'of the latch 1 can be locked by being locked, and then opened, after the two latches 22 and 22' are returned to the inside of the housings 21 and 21 '.

As described above, the present invention has an advantage that the opening and closing operation is very easy because the opening and closing operation of the manhole is inserted into the jig groove and rotated while pressing.

In addition, once the manhole cover is locked, the clasp is inserted into the clasp fixing groove so that the rotation is prevented, so that the clasp is not detached from the clasp.

In addition, since the clasp is protected from the external harsh environment by the housing, there is no corrosion and the resulting failure, and the structure is simple, making it easy to manufacture and reducing the manufacturing cost.

Claims (4)

In the manhole extension with a manhole cover, A housing attached to a bottom surface of the manhole cover, the housing having a shaft at one side and a latch hole at a side thereof; A shaft support having a shaft hole and a rotating jaw on one side thereof is rotatably coupled to the shaft, and the other end of the latch rotates in and out of the latch hole; A spring that is elastically installed around the axis of the housing between the housing and the clasp to give the restoring force of the clasp; A latch bundle having a shaft groove for exposing the shaft support portion and the shaft and fixed to the upper portion of the housing and attached to one side of the bottom surface of the manhole cover; A catching piece installed on an opposite side of the clasp, A mantle ring corresponding to the end of the clasp exposed to the clasp hole, the clasp ring being inserted by the end of the clasp; A hook that is caught by inserting the end of the hook piece into a manhole toe corresponding to the hook piece; Manhole cover security device consisting of a manipulator formed in the manhole cover to enable the operation of the shaft and the shaft support of the housing to enable the operation of the latch through a separate jig. In the manhole extension with a manhole cover, A housing attached to a bottom surface of the manhole cover, the housing having a shaft at one side and a latch hole at a side thereof; A shaft support having a shaft hole and a rotating jaw on one side thereof is rotatably coupled to the shaft, and the other end of the latch rotates in and out of the latch hole; A spring that is elastically installed around the axis of the housing between the housing and the clasp to give the restoring force of the clasp; A plurality of clasps having a shaft groove for exposing the shaft support and the shaft, the closing plate being fixed to the upper portion of the housing, the plurality of clasps being installed outwardly on both sides of the bottom surface of the manhole cover; A clasp ring in which the end of the clasp is inserted and caught in a manhole receptacle corresponding to an end of the clasp exposed to the clasp holes of both clasps; Manhole cover security device, characterized in that the operating hole is formed in the manhole cover to enable the operation of the shaft and the shaft support of the housing to enable the operation of the latch through a separate jig. The manhole cover security device according to claim 1 or 2, wherein the latch fixing groove is formed in an upper portion of the latch hole adjacent to the shaft. The manhole cover security device according to claim 1 or 2, wherein the jig has a locking groove corresponding to a locking jaw of the upper end of the shaft support part, and a handle is formed on the upper end to facilitate rotation.