DE4123680A1 - Temporary security fence with wire threaded through rings - gives e.g. acoustic warning of attempt to penetrate or scale overlapped sections of upright wire mesh - Google Patents

Abstract

Sections of wire netting (4) are overlapped at their ends (8) where they are screwed (16) to upright posts (6) set into the sockets of concrete bases (10). The security wire (12) is threaded through a ring in the head of each screw (16) and connected to an alarm centre (14) in common with up to three wires from other sections. Attempts to climb over the top (18) are forestalled by a tensioned (28) wire connected to a pull-switch (Y). USE/ADVANTAGE - For protection of installations and construction sites, any breach in fence or removal of section triggers alarm.

Description

The invention relates to a security fence for temporary use for security objects and construction sites, consisting of overlapping one another attached expanded metal mats attached to fence posts.

For an effective, the security requirements of plant protection temporary protection of construction sites and parking spaces is a Construction fence or mobile fence required. Because of the positive experiences with expanded metal fence systems for stationary security fence systems developed a mobile security fence based on expanded metal that a much higher level of security than conventional fences dard offers.

The object of the invention is to provide a mobile security fence with an over to equip the security device that opens the fence or the Her remove or remove expanded metal mats from the fence composite monitors and reports.

A monitored safety loop is used to solve this task  Ring nuts connected to the fence that loosening the mat connection not without destroying the wire and therefore not without triggering one Notification is possible. Another solution to the problem consists of a Pull wire and a pull switch for monitoring the fence crown.

The invention is described in more detail below with reference to figures.

Show it:

Fig. 1 shows a mobile security fence with acoustic alarm system (AMS).

Fig. 2 shows a mobile security fence with security loop (SHS).

Fig. 3 shows a mobile security fence with security loop (SHS) and train switch system (ZSS).

Fig. 4 Detail X of Fig. 3 regarding the guidance of a safety wire by a ring nut.

Fig. 5 Detail Y of Fig. 3 relating to a pull switch system for monitoring fence crowns.

The mobile expanded metal fence 2 according to the invention consists of expanded metal mats 4 , fence posts 6 , mat connecting parts 8 and reinforced concrete feet 10 . To erect the fence, the concrete feet 10 are spaced apart along the intended fence line, the fence post 6 inserted into the sleeves of the concrete feet 10 and locked from below. At these fence posts 6 , the expanded metal mats 4 are screwed together overlapping with connecting elements, the expanded metal mat sitting on the concrete feet 10 .

The resulting fence structure is designed in such a way that climbing over it without aids is made more difficult, since the fence mats protrude beyond the fence posts and the fence is therefore very unstable in the area of the crown crown when under stress. Cutting through the fence mats themselves is very complex and time-consuming due to the structure of the expanded metal mats 4 . This means that a high resistance time value for penetration and over-climbing is achieved.

For mechanical reinforcement of the mobile expanded metal fence, fol the following measures are taken:

• - fastening the concrete feet to the ground using pegs,
• - weighting of the concrete feet by additional concrete feet as ballast,
• - Construction of additional concrete feet on the inside of the fence and connection through support poles with the fence posts.

To secure the fence, a security loop is used, consisting of an electrically monitored security wire 12 on a cable drum and a mobile signaling center 14 for up to four detection lines, via which the security wire 12 is evaluated.

The safety wire 12 is guided by the fence by ring nuts 16 which are used as the connecting screws on the post 6 and is destroyed in the solution of the wire 12th The security wire 12 is supplied ready-made for monitoring areas on a cable drum. The respective monitoring length can be realized simply by unwinding the required cable length and guiding through the ring nuts 16 . The security wire from two monitoring zones is connected in FIG. 2 to the mobile signaling center 14 for the security loop SHS and evaluated there.

The alarm center 14 has both an acoustic and optical alarm possibility directly on site as well as potential-free outputs for silent forwarding of the alarm and fault messages to a higher-level control center. In addition to the safety loop, a pull switch system (ZSS) is used to monitor the fence crown 18 against climbing over. It consists of a pull switch 20 , the deflection pin 22 of which is braced on both sides with pull wires 24 , 26 . The pulling wires are guided through bent expanded metal lozenges just below the fence crown and in such a way that the pulling wires run freely when the fence crown is bent and, in the event of one-sided or uneven loading, press the deflection pin out of its middle position against one of the contacts, which leads to an alarm being triggered.

The pull wires 24 , 26 are fastened to the free ends with the tension spring 28 and hold the deflection pin 22 in a straight position.

The message is activated on the security message center loop, which is equipped with another evaluation unit for this purpose is.

An acoustic alarm system (AMS) is installed on stationary expanded metal fencing systems has been used for a long time and has proven itself. Use on the mobile Expanded metal fence is possible in the same way. This means that even the mobile Expanded metal fence against cutting through and climbing over individual persons  be monitored safely without tools.

Especially when building a stationary expanded metal fence system, one as a construction fence for longer uses to close vacant lots The acoustic alarm system (AMS) is the ideal choice. There through an almost equivalent security standard to that already established installed fence system can be reached. The cables for connecting the detectors are guided directly on the fence and fastened with cable ties. The Auswer can in the evaluation centers belonging to the stationary fence system of the acoustic alarm system (AMS) or own evaluation centers men.

When using the acoustic alarm system (AMS), the mobile expanded metal fence to make sure that none if possible Rattling noises occur during later operation. You can do this the concrete feet with pegs on the ground or the entire fence Additional concrete feet and support rods are reinforced.

Claims (2)

1. Security fence for temporary use to secure objects and construction sites, consisting of overlapping mutually attached expanded metal mats, which are attached to fence posts, characterized in that at least one ring nut ( 16 ) is attached to each fence post ( 6 ) and through the ring hole a security wire ( 12 ) is laid. 2. Security fence according to claim 1, characterized in that in the area of the fence crown ( 18 ) a pull switch system (ZSS) is present, the pull wires ( 24 , 26 ) being guided through curved rhombuses of the expanded metal mat ( 4 ).