KR20230018821A - Cable cutting device for easy intrusion detection with improved compatibility - Google Patents

Abstract

A conventional cable banding induction device, when coupled to a frame supporting a barbed wire or a support frame of a fence, is not directly installed on the existing support frame but is additionally installed at an upper end of the existing frame, resulting in an increase in the overall height of the support frame and inconvenience in installation. Moreover, the conventional cable banding induction device can be installed when holes are drilled in a fastening part of the existing support frame, resulting in increased installation costs, extensive installation time, and elevated labor costs for workers. So, the conventional cable banding induction device raises production costs. To overcome the problems, an objective of the present invention is to provide a cable cutting device with easy detection of intrusion, which includes a post overlaying body frame and a cable support upper frame, and is coupled to the external surface of a frame supporting a barbed wire or a support frame of a fence in an overlaying manner, thereby simplifying the frame, and making installation more convenient and reducing installation time and costs by allowing for installation without damaging the existing support frame. When an external force is applied while touching or stepping on a net connected to the support frame or the barbed wire to climb over the barbed wire, a sensing cable is perfectly cut without any entanglement such that the cable cutting device can detect the external force, and the cutting positions of the sensing cable are evenly distributed such that there are no blind spots in detection.

Description

Cable cutting device for easy intrusion detection with improved compatibility {CABLE CUTTING DEVICE FOR EASY INTRUSION DETECTION WITH IMPROVED COMPATIBILITY}

The present invention relates to a cable cutting device that is coupled to a frame, fence, fence, etc. supporting an existing barbed wire and cuts the cable inserted into the frame when stepped on by hand or foot, and which facilitates intrusion detection.

When an intruder crosses a barbed wire, fence, fence, or barbed wire without permission, a cable bending trigger device has been developed and installed in various places to detect intrusion when pressure is applied when an intruder steps on a support pole with his or her hand.

At this time, the cable bending inducing device has an outer frame and an inner frame formed therein, and a cable is inserted into the inner part of the inner frame, and when pressure is applied to the outer frame, the outer frame is folded and the cable inserted inside is bent or cut. done in a way

In particular, the cable bending trigger device is extensive and is installed at regular intervals on the poles of the GOP's barbed wire, which is 155 miles long (about 250 km), and is used in large quantities for the purpose of detecting unauthorized defectors and North Korean defectors.

Here, when the existing cable bending inducing device is coupled to a frame supporting barbed wire or a support frame such as a fence or fence, it is not directly installed on the existing support frame, but is additionally installed at the upper end, so that the overall height of the support frame is increased. It is inconvenient to install, and it is possible to install only when a hole is drilled in the fastening part of the existing support frame, which increases the cost of installation, takes a lot of installation time, and increases the labor cost of workers, resulting in a high production cost. There was a problem that caused the

Republic of Korea Patent Registration No. 10-1949815 (registered on February 13, 2019)

In order to improve the above problems, in the present invention, the frame can be simplified by bonding to the outer surface of an existing support frame such as a frame supporting barbed wire, a fence, or a fence in an additive manner, and it can be installed without damaging the existing support frame. It is easy to install and can reduce installation time and cost, and when an external force is applied while holding or stepping on the net connected to the support frame or barbed wire to cross the barbed wire, it can be perfectly cut and sensed without misalignment of the sensing cable. It is an object of the present invention to provide a cable cutting device in which the cutting position of the sensing cable is evenly distributed so that the intrusion detection is easy without a blind spot of detection.

In order to achieve the above object, the iron props according to the present invention are erected at regular intervals, the netting and netting support wires are fixed between the gaps, and are coupled to one side of the upper end of the iron pillars of the wire fence forming the circular barbed wire at the top and detected. The cable cutting device for accommodating the cable,

A body frame with a hollow rectangular frame that is coupled to the front and rear by an addition method to the steel post, and accommodates the sensing cable and supports the cable cutting device as a whole;

In the shape of a hollow square frame, it is coupled to the upper end of the post-reinforced body frame and is composed of a cable support upper frame supporting the penetrating mesh support wire and the incoming/outgoing sensing cable.

As described above, in the present invention, the frame can be simplified by attaching to the outer surface of an existing support frame such as a frame supporting barbed wire, a fence, or a fence, and the frame can be simplified, and the existing support frame can be installed without damaging it. It is easy to install and can reduce installation time and cost. When an external force is applied while holding or stepping on the support frame or the net connected to the barbed wire to go over the barbed wire, it can be perfectly cut and sensed without misalignment of the sensing cable. In this case, the cutting position of the sensing cable is evenly distributed, so there is a good effect that sensing can be performed without a blind spot.

1 is an iron support according to the present invention is erected at regular intervals, a net and a net support wire are fixed between the intervals, and coupled to the top of the iron support of the wire fence forming a circular barbed wire at the top in an overlapping manner, and a sensing cable A perspective view showing the overall shape of the cable cutting device 1 to be accommodated,
Figure 2 is a perspective view showing the overall shape of a cable cutting device for easy intrusion detection with improved compatibility according to the present invention;
Figure 3 is an exploded perspective view shown in the top perspective view direction by disassembling the overall components of the cable cutting device for easy intrusion detection with improved compatibility according to the present invention;
Figure 4 is an exploded perspective view from the bottom perspective view direction by disassembling the overall components of the cable cutting device for easy intrusion detection with improved compatibility according to the present invention;
Figure 5 is a partially projected perspective view showing by disassembling the components of a portion of the post body frame according to the present invention, and projecting the internal components of a portion of the front addition frame;
6 is a perspective view showing directions in which a sensing cable penetrates and is coupled to a cable cutting part and a torsion spring according to the present invention, and the cable cutting part and the torsion spring are moved and restored through elastic force according to external pressure with arrows;
Figure 7 is an exploded perspective view showing the disassembled components of the cable cutting unit coupled to the inside of the front reinforcement frame according to the present invention;
Figure 8 is an exploded perspective view showing the disassembled components of the cable cutting unit coupled to the inside of the lower padding frame according to the present invention;
Figure 9 is an exploded view of the components of the cable support upper frame according to the present invention, and an enlarged view of the bottom of the upper portion of the upper support frame enlarged;
10 is a projected perspective view showing that the upper sheath frame of the cable support upper frame is separated and the mesh support wire and the sensing cable are drawn in and out of the cable support upper frame according to the present invention;
11 is vertically spaced from the inner lower end of the wire cutting fixing frame in a state in which a mesh support wire and a sensing cable are pulled in and out of the wire support movable frame according to the present invention, and an elastic spring formed at the lower end of the wire support movable frame is raised. A perspective view showing the status,
12 is a mesh support wire and a sensing cable being pulled in and out of the wire support movable frame according to the present invention, pressure is formed in the vertical downward direction in the wire support movable frame, and the elastic spring formed at the bottom descends to form a wire cutting fixed frame, A perspective view showing a state in which the wire support moving frame is engaged and the sensing cable in the cable entry/exit hole is cut.

Hereinafter, a preferred embodiment according to the present invention will be described with accompanying drawings.

1 is a barbed wire fence in which iron posts 2a according to the present invention are erected at regular intervals, a net 2b and a net support wire 2c are fixed between the intervals, and a circular barbed wire 2d is formed at the top ( It relates to a perspective view showing the overall shape of the cable cutting device 1 coupled to the top of the steel post in an additive manner and accommodating the sensing cable of 2), which includes a post-reinforced body frame 100 and a cable support upper frame 200 It consists of

First, the post-reinforced body frame 100 according to the present invention

The post support body frame 100 has a hollow rectangular frame shape engaged with the front and rear surfaces of the iron post in an addition method, and serves to accommodate the sensing cable and support the cable cutting device as a whole.

It is composed of a front padding frame 110 and a rear padding frame 120.

The front padding frame 110 has an upright hollow frame shape forming a square groove-shaped cross section, and one side of the left and right rear longitudinal ends is fitted with one side of the left and right front longitudinal directions of the rear rear padding frame, and the left side The inside and the right inside are spaced apart from the front reinforcement frame, and the elastic body is coupled to the spaced space facing the iron support inserted into the inner side.

The front reinforcement frame 110 according to the present invention is formed with a cable cut portion 111 and a torsion spring 112 forming an elastic body facing the iron support by inserting a plurality of them at regular intervals along the longitudinal direction on the inner surface.

The cable cutting part 111 has a square frame shape laid horizontally, the front part is fixed to the inner surface of the front padding frame, the rear part is in contact with the iron support, the front part and the rear part are interlocked, and the inside is spaced apart from each other, spaced apart The sensing cable is passed through in the vertical direction on the inside, and is composed of a cutting fixing frame 111a and a cutting moving frame 111b.

Here, the cutting fixing frame 111a is a square frame-shaped frame fixed to the inner surface of the front add-on frame, supports the cable cutting part as a whole, and the cable cutting blade 111a-1 is inserted and fixed to one side of the inner center.

At this time, the cable cutting blade 111a-1 is fixed to the inside of the cutting fixing frame in the horizontal direction and is formed to face the sensing cable 3 vertically penetrating the cable cutting portion at a right angle.

Here, the cutting movement frame 111b is a square frame-shaped frame in which elastic springs 111b-2 are symmetrically arranged on the left and right sides of the inside and engaged with the cutting fixing frame, and move in the elastic direction of the elastic spring and restore the position. And, a cable fixing pin 111b-1 for accommodating the sensing cable 3 penetrating in the vertical direction is formed at the center of the upper and lower ends.

At this time, the cable fixing pin 111b-1 prevents the sensing cable 3 penetrating vertically from the upper and lower ends of the cable cutout from being unfixed, sloshing or moving laterally, and stably fixed to the cable cutout. .

At this time, the elastic spring (111b-2) forms the elasticity in the coupling direction inside the cutting fixed frame (111a), the cutting movement frame (111b) coupled in an interlocking structure.

The cable cutting part 111 according to the present invention is located at regular intervals in the longitudinal direction on the inner surface of the frontal padding frame, so that when the frontal padding frame is gripped by hand or stepped on with feet, the cutting moving frame 111b is cut and fixed frame 111a While moving in the direction, the sensing cable 3 is cut by the cutting blade 111a-1 to perform sensing.

Through this, when an external force is applied to the post-reinforced body frame 100 attached to the existing iron post, the sensing cable 3 that is drawn in and out and passes through is cut, and the cut signal of the sensing cable is received. It can detect whether or not an unauthorized intrusion from outside is detected.

The torsion spring 112 is spaced apart from one side of the cable cutting part and is formed between the front reinforcement frame and the iron post to form an elastic force.

This maintains the separation distance of the cutting moving frame 111b engaged with the cutting fixed frame 111a like an elastic spring coupled to the inside of the cutting moving frame, and stably installs the cable cutting part, and supports the support body frame ( 100), when an external force is applied, it contracts like an elastic spring and serves to form an auxiliary elastic force.

The rear back frame 120 is in the shape of an upright hollow frame forming a right-angled groove-shaped cross section, and is located while surrounding and abutting the outer rear surface of the right-angled steel support, and one side in the left and right longitudinal directions is a frontal back frame It is formed by interlocking and combining with.

It is formed to surround the rear surface protruding in a right angle structure with the side of the iron post 2a, and is engaged and fixed with the front additional frame 110.

The support body padding frame 100 according to the present invention includes a lower moving frame 130 for padding.

The lower moving frame 130 is in the shape of a hollow frame forming a cross section of a square groove shape, and is coupled to form an inclined angle at the lower end of the front additional frame to surround the front of the lower inclined surface of the iron support and is spaced apart, the inner surface The elastic body is coupled to the spaced space.

When the reinforcement frame 130 according to the present invention has a cable cut portion 131 and a torsion spring 132 forming an elastic body facing the lower inclined surface of the iron support on the inner surface.

The cable cutting part 131 is in the shape of a square frame laid horizontally, the front part is fixed to the inner surface of the backside frame, and the rear part is fixed while abutting the lower inclined surface of the steel post, and the front and rear parts are interlocked and the inside is spaced apart from each other , and the sensing cable passes through the spaced inner side in the vertical direction, which is composed of a cutting fixing frame 131a and a cutting moving frame 131b.

Here, the cutting fixing frame 131a is a square frame-shaped frame fixed to the inner surface of the one-sided padding frame, supports the cable cutting part 131 as a whole, and the cable cutting blade 131a-1 is inserted and fixed to one side of the inner center do.

At this time, the cable cutting blade 131a-1 is fixed to the inside of the cutting fixing frame in a horizontal direction and is formed to face the sensing cable 3 passing through the cable cutting portion in the vertical direction at a right angle.

Here, the cutting moving frame 131b is a square frame-shaped frame in which elastic springs 131b-2 are symmetrically arranged on the left and right sides of the inside and engaged with the cutting fixing frame, and move in the elastic direction of the elastic spring and restore the position. And, a cable fixing pin 131b-1 for accommodating the sensing cable 3 penetrating in the vertical direction is formed at the center of the upper and lower ends.

At this time, the cable fixing pin 131b-1 prevents the sensing cable 3 penetrating vertically from the upper and lower ends of the cable cut-off portion from being unfixed, sloshing or moving laterally, and stably fixed to the cable cut-off portion. .

At this time, the elastic spring (131b-2) forms the elasticity in the coupling direction inside the cutting fixed frame (131a), the cutting moving frame (131b) coupled in an interlocking structure.

The cable cutting part 131 according to the present invention is located on the inner surface of the frontal padding frame, and when the frontal padding frame is gripped by hand or footed, the cutting moving frame 131b is moved in the direction of the cutting fixed frame 131a, and the sensing cable (3) is cut by the cutting blade (131a-1) and the sensing is made.

Through this, when an external force is applied to the post-reinforced body frame 100 attached to the existing iron post, the sensing cable 3 that is drawn in and out and passes through is cut, and the sensing cable receives the cut signal It can detect whether or not an unauthorized intrusion from outside is detected.

The torsion spring 132 is spaced apart from one side of the cable cutting part and is formed between the front reinforcement frame and the iron post to form an elastic force.

This maintains the separation distance of the cutting moving frame 131b engaged with the cutting fixed frame 131a like an elastic spring coupled to the inside of the cutting moving frame and stably installs the cable cutting part, and supports the support body frame ( When an external force is applied to 100), it contracts like an elastic spring and serves to form an auxiliary elastic force.

Next, it is composed of a cable support upper frame 200 according to the present invention.

The cable support upper frame 200 has a hollow rectangular frame shape, is coupled to the upper end of the post-reinforced body frame, and serves to support the mesh support wire passing through and the sensing cable being pulled in and out.

It consists of an upper support frame 210, a wire cutting fixing frame 220, a wire support moving frame 230, and an upper sheath frame 240.

The upper support frame 210 has an upright hollow square frame shape, the upper end of the steel support is inserted into the lower groove and fixed, and the wire cutting fixing frame is fixed in the upper groove to support the cable support upper frame as a whole. do.

The upper support frame 210 according to the present invention has a square structure on the lower side of the inner surface, one side and one rear side are combined and horizontal, and a rectangular plate-shaped bulkhead frame 211 with a bolt hole formed on one side of the center is formed, A support square groove 212 formed of a groove having a right angle structure is formed on the front and one side of the bulkhead frame.

Here, the bulkhead frame 211 is fastened to the square plate frame 2a-1 formed on the upper end of the iron post 2a by bolting so that the cable cutting device 1 can be stably fastened to the iron post.

Here, the post coupling square groove 212 allows one upper side of the iron post 2a to be inserted into the upper support frame 212, so that the square plate frame 2a-1 formed spaced apart from the inside of the iron post It can be fastened with the bulkhead frame 211, and the upper end of the iron support can be wrapped around and inserted into the upper frame for supporting the cable.

In this way, the cable cutting device 1 can be stably fastened without any damage to the existing steel post 2a through the upper support frame 210, thereby increasing the ease of installation and minimizing installation time and installation cost can do.

The wire cutting fixing frame 220 has a double structure upright hollow square frame shape, the fixing frame at the outer lower end is inserted into the upper groove of the upper support frame and fixed, and the cutting frame protrudes and is fixed at the inner upper end. , which is composed of a fixed frame 221 and a cutting frame 222.

Here, the fixed frame 221 is a rectangular frame-shaped frame forming the outer circumference of the lower end of the wire cutting fixed frame, and the lower surface is fixed by being bolted to the bulkhead frame of the upper support frame.

Here, the cutting frame 222 is located inside the fixed frame and has a rectangular frame shape having an inner circumferential surface matching the outer circumferential surface of the wire supporting movable frame, and is formed so that the wire supporting movable frame is inserted into the inner surface.

The wire support movable frame 230 has a shape of an upright hollow square frame, supports the mesh support wire 2c and the detection cable 3 through and through the left and right sides, and has an elastic spring 230a formed at the lower end. It is coupled with the wire cutting fixing frame and forms elasticity in the vertical direction.

It consists of a left detection cable entry hole 231, a wire entry hole 232, a right detection cable entry hole 233, a right mesh support wire entry hole 234, and a rear detection cable entry hole 235.

The left sensing cable entry hole 231 has a U-shaped hole formed on one side of the upper left side of the square frame, and serves to insert and support the sensing cable into the upper left side of the upper frame supporting the cable.

The wire inlet hole 232 has a square hole shape formed at one side of the center of the left side of the square frame, and serves to insert and support the mesh support wire into the center of the left side of the upper frame for supporting the cable.

The right sensing cable lead-out hole 233 has a U-shaped hole formed on one side of the upper right side of the square frame, and serves to lead and support the sensing cable to the lower right side of the upper frame supporting the cable.

The right mesh support wire inlet hole 234 has a square hole shape formed on one side of the center of the right side of the square frame, and serves to draw and support the mesh support wire to the center of the right side of the upper frame for supporting the cable.

The rear detection cable entry/exit hole 235 has a left/right symmetrical circular hole shape formed at one side of the center of the rear surface of the square frame, and serves to lead and lead the detection cable to the center of the rear surface of the upper frame supporting the cable.

The wire support movable frame 230 according to the present invention has an elastic spring formed at the lower end when a direct external force is applied to the cable support upper frame 200 or an external force pulling the net support wire 2c downward is applied. 230a) contracts and moves to the lower end, and the wire cutting fixing frame 220 and the wire supporting moving frame 230 are engaged to form a shear force on the sensing cable 3 protruding from the rear sensing cable entry/exit hole 235. It is cut and detected.

Through this, when an external force is applied to the cable support upper frame 200 coupled to the upper part of the existing steel support or a situation in which the net support wire 2c is pulled occurs, it is drawn in and out to pass through The detection cable 3 is cut, and it is possible to detect whether an unauthorized intrusion is received from the outside by receiving a cut signal of the detection cable.

The upper sheath frame 240 has a square frame shape, is fixed to the upper end of the wire support movable frame, and serves to penetrate the mesh support wires and detection cables through the left and right sides.

This serves to surround and support the upper outer circumferential surface of the cable support upper frame 200 .

Hereinafter, a method for installing a cable cutting device for easy intrusion detection with improved compatibility according to the present invention will be described.

First, a square post coupling groove is inserted into the upper end of an existing rectangular steel post, and a bulkhead frame is coupled to a square plate frame formed on one side of the upper end to fix the cable support upper frame.

Next, the mesh support wire and the sensing cable are coupled to the inside of the cable support upper frame and the support body frame so as to be drawn in and out.

Next, the front padding frame is attached to the front of the iron support, the rear padding frame is padded to the rear, and the rear padding frame is fitted in the longitudinal direction of the left and right inner sides of the front padding frame.

At this time, the cable cut portion facing the iron support is coupled to the inner surface of the front frame at regular intervals along the longitudinal direction.

Next, the cable cutting device is completed by combining the lower reinforcement frame so as to be coupled to the lower end of the front reinforcement frame and padded to the front of the lower slope of the iron support.

At this time, the cable cut portion facing the lower inclined surface of the iron support is coupled to the inner surface of the lower reinforcement frame.

1: cable cutting device 2: barbed wire
3: detection cable
100: support body frame 110: front support frame
120: rear padding frame 211: cable cut
122: torsion spring 130: lower moving frame
131: cable cutting portion 200: cable support upper frame
210: upper support frame 220: wire cutting fixed frame
230: wire support moving frame 240: upper shell frame

Claims (8)

Iron supports are erected at regular intervals, the netting and netting support wires are fixed between the intervals, and the cable cutting device (1) coupled to the iron supports of the barbed wire forming the circular barbed wire at the top and accommodating the sensing cable,
A support body frame 100 having a hollow rectangular frame shape coupled to the front and rear surfaces by an addition method to an iron support, accommodating a sensing cable and supporting the cable cutting device as a whole,
In the shape of a hollow square frame, it is coupled to the upper end of the post-reinforced body frame and consists of a cable support upper frame 200 supporting the penetrating mesh support wire and the incoming/outgoing sensing cable. Improved compatibility, characterized in that Cable cutting device for easy intrusion detection.
The post-reinforced body frame 100 according to claim 1
It is an upright hollow frame shape that forms a square groove-shaped cross section, and one side of the left and right rear longitudinal direction ends are fitted with one of the left and right front longitudinal sides of the rear addition frame, and the left inside and right inside are the front addition frame A front reinforcement frame 110 spaced apart from and coupled with an elastic body in a spaced space facing the iron support inserted into the inner surface;
It is in the shape of an upright hollow frame forming a right-angled groove-shaped cross section, wrapped around and in contact with the outer rear surface of the right-angled steel support, and one side in the left and right longitudinal front side is engaged with the front addition frame. 120), a cable cutting device for easy intrusion detection with improved compatibility, characterized in that composed of.
The post backing body frame 100 according to claim 2
It is a hollow frame shape that forms a square groove-shaped cross section, and is combined while forming an inclination angle at the bottom of the front addition frame, wrapping the front of the lower slope of the iron support and spaced apart. Cable cutting device for easy intrusion detection with improved compatibility, characterized in that the moving frame 130 is included.
The front padding frame 110 according to claim 2
In the shape of a square frame laid horizontally, the front part is fixed to the inner surface of the front reinforcement frame, the rear part is in contact with the steel support, the front part and the rear part are interlocked, the inside is spaced apart, and the sensing cable is perpendicular to the spaced inside With the cable cutting portion 111 passing through,
The torsion spring 112 spaced apart from one side of the cable cutout and formed between the front reinforcement frame and the steel post to form an elastic force is formed at regular intervals along the length direction, characterized in that the intrusion detection with improved compatibility is easy cable cutting device.
The cable cutting part 111 according to claim 4
A cutting fixing frame (111a), which is a square frame-shaped frame fixed to the inner surface of the front padding frame, supports the cable cutting part as a whole, and has a cable cutting blade (111a-1) inserted and fixed to one side of the inner center,
It is a square frame-shaped frame that engages with the cutting fixing frame and has elastic springs (111b-2) symmetrically disposed on the left and right sides of the inside to be coupled. A cable cutting device for easy intrusion detection with improved compatibility, characterized in that it consists of a cutting moving frame (111b) in which a cable fixing pin (111b-1) is formed to accommodate the sensing cable (3) passing through.
The cable support upper frame 200 according to claim 1
An upright hollow square frame shape, in which the upper end of the iron support is inserted and fixed into the lower groove, and the wire cutting fixing frame is fixed in the upper groove to support the cable support upper frame as a whole 210;
In the shape of a double structure upright hollow square frame, the fixing frame of the outer lower end is inserted into the upper groove of the upper support frame and fixed, and the cutting frame is protruded and fixed to the inner upper end of the wire cutting fixing frame 220,
In the shape of an upright hollow square frame, the mesh support wires and detection cables are penetrated and supported on the left and right sides, and an elastic spring is formed at the bottom to combine with the wire cutting fixing frame, and the wire support forms elasticity in the vertical direction. A moving frame 230,
Intrusion detection with improved compatibility, characterized in that it is composed of an upper outer frame 240 fixed to the top of the wire support moving frame in the shape of a square frame frame and passing through the mesh support wire and detection cable on the left and right sides. Easy cable cutting device.
The upper support frame 210 according to claim 6
On one side of the bottom of the inner surface, one side and one side of the rear are combined in a square structure, and a rectangular plate-shaped bulkhead frame 211 is formed with a bolt hole formed on one side of the center to form a horizontal structure. A cable cutting device that is easy to detect intrusion with improved compatibility, characterized in that the holding square groove 212 formed of grooves is formed.
The wire support moving frame 230 according to claim 6
A left sensing cable entry hole 231 having a U-shaped hole formed on one side of the upper left side of the square frame and supporting and inserting the sensing cable into the upper left side of the upper frame for supporting the cable 231;
In the shape of a square hole formed on one side of the center of the left side of the square frame, a left mesh support wire inlet hole 232 for inserting and supporting the mesh support wire into the center of the left side of the upper frame for cable support,
A right sensing cable lead-out hole 233 having a U-shaped hole formed on one side of the upper right side of the square frame and pulling out and supporting the sensing cable to the lower right side of the upper frame supporting the cable;
In the shape of a square hole formed on one side of the center of the right side of the square frame, the right side mesh support wire inlet hole 234 for drawing and supporting the mesh support wire to the center of the right side of the upper frame supporting the cable 234,
In the shape of a left-right symmetric circular hole formed on one side of the rear center of the square frame, compatibility is improved, characterized in that the rear detection cable entry/exit hole 235 is configured to withdraw and lead the detection cable to the rear center of the upper frame supporting the cable. A cable cutting device that is easy to detect intrusion.

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