RU2545202C2 - Antiterrorist barrier - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: barrier is intended for protection against unauthorised passage of transport vehicles. A barrier includes a swing-beam fixed in cavities of fixing supports, which are installed on foundation projections along edges of the road bed. An electrohydraulic actuator of the swing-beam is installed on the projection near the swing-beam. A cavity is made in the bed immediately in front of the swing-beam; in the above cavity there mounted is a movable load-carrying surface made on the basis of a garage conveyor for movement of transport consisting of a frame, two movable drums enveloped with a tightened steel band being a moving load-carrying surface. The band is equipped with a brake gear made in the form of an electromagnetic friction coupling with an excitation winding connected to an electric circuit of the swing-beam actuator and attaching the rotation axis of one of the drums to the fixed shaft connected to the earth.

EFFECT: increasing a protection degree by reduction of collision power of a transport vehicle at the moment of its bumping against a barrier.

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Description

The invention relates to road traffic and is intended to protect against unauthorized passage of vehicles.

Known anti-ramp devices containing locking elements installed in the power mechanism in the form of a metal structure mounted in a concrete foundation in the roadway, the drive lifting and lowering the locking elements, their fixation in a horizontal position / see RF patent for utility model No. 46572, cl. F41H 11/08, 2005 [1]; RF patent for useful No. 46573, cl. F41H 11/08, E01F 13/00, 2005 [2] /.

The disadvantages of the known devices are their extreme complexity, large dimensions, significant material consumption, limited functionality due to the advisability of their use only as anti-ram device and the need to lay the foundation for the entire width of the roadway.

Also known are devices for forced stopping of vehicles, comprising a system of mechanical inertial elements mounted on the carriageway, kinematically connected to each other and forming a vehicle’s force-fixing mechanism / cm. A.S. USSR No. 1729298, class E01F 12/00, 1988 [3]; US patent No. 4600335, CL. E01F 13/00, 1986 [4]; A.S. USSR No. 1553601, class E01F 13/00, 1987 [5] /.

The disadvantages of the known devices are also significant complexity, cumbersome, limited functionality due to the appropriateness of their special use only for the forced stop of the vehicle and the subsequent quick release of the carriageway. In addition, anti-ram retractable pillars are known, which are an obstacle located below ground level, vertically rising upwards using electro-hydraulic, electromagnetic, etc. drive / cm. http://www.ronixs.ru/vydvizhnye stolby s gidravlicheskim 06/07/2011 [6]; RF patent for utility model No. 39144, class. E01F 13/04, 2004 [7] /.

The disadvantages of the known devices are their limited functionality, which is explained by the inappropriateness due to the bulkiness, high cost, complexity of foundations and drives to use them as ordinary barriers in the standard and most common modes.

The closest device of the same purpose to the present invention, in terms of essential features, is an anti-terrorism anti-ram barrier containing an arrow mounted by a base and an end on fixing supports and connected with an electro-hydraulic drive / cm located in the zone of the base of the arrow. http://hisec-barriers.ru/images/files/FrontierPittsTerrabar-rier.pdt. [8], and adopted as a prototype.

This device in comparison with devices [1] ÷ [7] has wider application possibilities, does not require laying the foundation for the entire width of the roadway. However, it is intended to work only in critical anti-ram modes without the possibility of functional adjustment to the mode of operation of a conventional barrier. This implies significant dimensions, the mass of the structure / about 2000 kg /, the huge consumption of extra-strong steel grades, the need to make heavy-duty fixing supports and bookmarks with a minimum depth of up to 300 mm. In addition, the known device is characterized by low profitability, significant energy consumption of the drive for periodic lifting - lowering the heavy duty boom. This is due to the fact that almost the entire time of operation, the barrier operates in the normal mode of opening and closing the roadway, which does not require such costs, and only limited time points - in the anti-ram critical mode. The degree of protection achieved by the barrier is sharply reduced due to the possibility of preliminary visual assessment by potential terrorists of the power and anti-ram resistance of the structure, and their adoption of other penetration options: explosion, neutralization of protection, unauthorized opening, etc.

The essence of the invention is to create a relatively simple, universal and economical design of the barrier, while providing a high degree of protection against unauthorized entry by implementing a fundamentally different approach to design. With this approach, increasing the degree of protection is carried out not by increasing the anti-ram power of the barrier, but, on the contrary, by reducing the ramming power of the vehicle at the moment of its impact into the barrier by providing mobility of the road surface in the area of its contact with the wheels of the vehicle upon impact, which allows repeatedly reduce the forces of dynamic interaction.

The technical result is to increase the degree of protection provided by the design, expand its functionality and reduce energy consumption during operation, simplify the design, reduce its size.

The specified technical result during the implementation of the invention is achieved by the fact that in the known anti-terrorist barrier containing an arrow fixed by a base and an end to the fixing supports and connected with a drive located in the zone of the base of the arrow, the feature is that immediately before the arrow in the recess on the roadway in the entire width of its carriageway and flush with the surface mounted moving in the longitudinal direction of the canvas bearing surface, made on the basis of the garage conveyor For the movement of vehicles during the organization of their servicing on the stream with the exception of the drive mechanism from its design and the preservation of the tape movable working body, consisting of two freely rotating drums covered by a steel tape with a tension mechanism supported on the rows of guide rollers, while the movable bearing surface is provided electromechanical braking device, triggered by the electric circuit of the boom drive when it is raised and which is an electromagnetic friction clutch connecting the axis of rotation of one of the drums with a fixed shaft rigidly connected to the ground, and an obstacle is installed in front of the moving surface on the roadway to limit the speed of a vehicle of the “lying cop” type.

The invention is illustrated by drawings, where the proposed device is schematically depicted: in Fig.1 - on a view of the roadway from above with a local cutout; figure 2 - in the form And in figure 1; figure 3 is a longitudinal section along bb in figure 1

The anti-terrorist barrier contains an arrow 1, fixed by the base / left in figure 2 / and the end / right in figure 2 / in the recesses 2, 3 of the fixing supports 4, 5 mounted on the foundation ledges 6, 7 along the edges of the roadway 8. On the left figure 2, the protrusion 6 in the area of the base of the boom 1 is installed electro-hydraulic actuator 9, associated with the base of the boom 1 and serves to raise it in the vertical and lowering in horizontal / see figure 2 / position. Directly in front of the boom 1 on the roadway 8, in the entire width of its roadway in the ground 10, a rectangular recess 11 is made, elongated along the roadway 8, adjacent to a niche 12 also made in the roadway 8 from the edge of the recess 11, in the recess 11 flush with the surface of the roadway 8, a bearing surface 13 movable in the longitudinal direction of the roadway 8 is mounted, allowing the vehicle to be allowed to come into contact with this surface when it is free of longitudinal movement I am with her regarding the roadway 8.

To simplify the process of mounting and reducing the cost of construction, the bearing surface 13 is made on the basis of a commercially available garage conveyor for moving vehicles when organizing their maintenance on the stream / cm. IN AND. Sarbaev. Maintenance and car repair. Rostov-on-Don: Higher Education, 2005, pp. 111-112 [9] /. The belt movable working body is fully used from this conveyor and the drive mechanism of this body, consisting of an electric motor, gearbox, V-belt or chain drive, as well as pushing trolleys / cm, is excluded. also M.I. Login. Chip transportation and processing. M.: Mechanical Engineering, 1968, pp. 48-49 [10] /. When the design of the device for mounting a specific bearing surface 13 is used, a steel frame 14 with a U-shaped cross-sectional shape, rigidly mounted in the recesses 11 so that the horizontal cross-sectional surface of the U-shaped is placed on the bottom of the recess 11, the vertical walls are sides of the U-shaped the sections are adjacent to the walls of the recess 11 parallel to the roadway 8, and the lower free ends of the U-shaped frame 14 are facing up and are flush with the surface of the roadway 8.

The movable tape operating body consists of two freely rotating drums 15, 16, mounted in bearings at the ends of the recess e11 on the walls of the frame 14 and covered by a tensioned steel tape 13, which is a movable bearing surface, equipped with a screw-type tension mechanism 17 located on the rear drum 16. The upper and lower parts of the tape 13 lie, respectively, on the rows 18, 19 of the guide rollers, eliminating the sagging of the tape 13 and installed in the sliding bearings also in the walls of the frame 14. Moving bearing surface / tape / 13 equipped with an electromechanical brake device that is activated from the electrical circuit of the actuator 9 of the boom 1 when it is raised.

This brake device is made in the form of a fixed curved shaft 20 located in a niche 12, rigidly connected to the ground 10, and specifically, attached to the vertical wall of the fixed frame 14. An electromagnetic friction clutch 21 is mounted on the free end of the shaft 20 with an excitation winding connected to an electric circuit drive 9, connecting the shaft 20 with the axis of rotation 22 of the front drum 15, extending beyond the walls of the frame 14. The two upper ends 14 together with the niche 12 are covered from above by covers 23, 24, screwed to the ends of the frame 14 and shown on figure 1 by dashed lines. In this case, only a movable bearing surface in the upper part of the belt 13, which is flush with the surface of the roadway 8, remains open for contact with the wheels of the vehicle.

In the state of the barrier with the boom lowered 1 / cm. figure 2 / - the prohibition of travel - the clutch 21 is disconnected, the axis of rotation 22 of the drum 15 is free and the belt 13 has the possibility of free longitudinal movement in the direction of the roadway 8 together with the rotating drums 15, 16. When you raise the boom 1 - permission to travel - an electrical signal with the drive 9 of the boom 1 is fed into the excitation winding of the coupling 21, the latter is activated and rigidly connects the stationary shaft 26 and the axis of rotation 22 of the drum 15, that is, the bearing surface 13 of the belt is braked for a while while the arrow 1 is raised. In front of the moving surface 13 on the roadway 8 across it across the entire width of the carriageway there is an obstacle 25 of the type "lying police officer", which allows to limit the speed of the vehicle before it enters the surface 13.

The work of the proposed device is carried out as follows.

As mentioned above, when the boom 1 is raised, the bearing surface 13 moving in the longitudinal direction of the roadway 8 is inhibited and the barrier works to let the vehicle pass in the normal mode, the vehicle moves easily along the inhibited belt 13, only its speed is previously limited by the “lying police officer” 25. When lowering the boom 1, i.e. when driving is prohibited, the barrier works in a fundamentally different mode. The bearing surface 13 / conveyor belt / at the same time, as mentioned above, is released, and gets the opportunity to move freely along the roadway 8. Pre-damping the speed of the vehicle using the "lying police officer" 25 does not allow the vehicle to jump onto the surface 13 at a significant speed and slip through its entire length due to the accumulated kinetic energy, and then ram the barrier. Therefore, considering the attempt to break the vehicle through the barrier as if in slow motion, we can describe the dynamics of this process as follows.

The vehicle moves on the surface 13 at low speed and rests with its front part against the horizontal boom 1. At the same time, its wheels, interacting with the belt 13 due to friction forces, begin to turn it together with the drums 15, 16, causing the belt 13 to move backwards, there are wheels together with the vehicle, on the contrary, push off from boom 1 and move away from it. This is equivalent to the fact that a person is trying to move the cabinet standing on the floor with his hands, while standing with his feet on a tape that can move freely, such as a treadmill / naturally, unbraked /. It is clear that at the same time, the legs along with the track will go back, and the efforts exerted by the person to the cabinet will be minimal. Therefore, the vehicle going to the breakthrough at the moment of impact on the boom 1 of the barrier cannot, in principle, apply any significant ramming power to the boom. Obviously, due to this, this variant of the device basically eliminates the need for boom 1, supports 4, 5, foundation, etc. with increased anti-ram power / cm. devices [1] ÷ [8] /.

Of course, given the antiterrorist purpose of the barrier, it should be made somewhat more powerful than ordinary barriers, which often simply do not perform any power function at all, but simply indicate by their presence the fact that the passage is prohibited. However, even this circumstance allows to increase the degree of protection provided by the structure, and at the same time simplify the structure, dramatically reduce energy consumption during its operation, weight and dimensions. Moreover, a fundamentally new, according to the applicant, approach proposed in this technical solution for creating an anti-terrorist barrier, which consists not in ensuring its maximum anti-ram stability, but, on the contrary, in providing the minimum possible ramming power of a vehicle at the time of a breakthrough, can be used to create a whole class of special devices for protecting objects from sources of aggression, for example, in cases when special ramming rams are used to break through the masses of people devices, etc.

Claims (1)

An anti-terrorist barrier containing an arrow fixed by a base and an end to fixing supports and connected to a drive located in the zone of the base of the arrow, characterized in that, in front of the arrow, in the recess on the road, the entire width of its carriageway is mounted flush with the surface and mounted longitudinally cloths bearing surface, made on the basis of a garage conveyor for the movement of vehicles when organizing their maintenance on the stream with the exception of its construction and the drive mechanism and the preservation of the tape movable working body, consisting of two free rotating drums, covered by a steel tape with a tension mechanism supported on the rows of guide rollers, while the movable bearing surface is equipped with an electric braking device that is activated from the electric circuit of the boom drive when it is raised and representing an electromagnetic friction clutch connecting the axis of rotation of one of the drums with a fixed shaft rigidly connected to the ground, and before moving th surface is set on the roadway obstacle to the vehicle speed limit type "lying policeman".

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