RU2312948C1 - Initial barricade part - Google Patents

Abstract

FIELD: road building, particularly safety arrangements for slowing, redirecting or stopping errant vehicles, for instance safety barricade built at road flanks.

SUBSTANCE: barricade comprises shock absorber arranged at initial barricade bar supported by posts. The shock absorber may move along bar under the action of head-on vehicle collision. Shock-absorber head is made as hollow body including shock panel, base and upper surface, which diverge from tail member. The hollow body also has two side walls inclined one to another to provide longitudinal section gradually narrowing from tail member to shock panel. Slot is created between one side wall and shock panel. Bent side wall end passes through the slot to create opening for outlet beam end insertion between side walls. Curvilinear guiding means is fixedly secured to bent end of the second side wall. The guiding means is installed to provide lesser bend radius of lower end of barricade beam leaving shock absorber under the impact force action in comparison with that of free end of the second rear wall.

EFFECT: increased energy absorption, possibility to provide upward spiral movement of barricade bar separated from shock absorber.

8 cl, 7 dwg

Description

FIELD OF THE INVENTION

The invention relates to the construction of roads and can be used in the form of safety barriers of the barrier type with a high degree of energy absorption, located on the side of the road.

State of the art

Known road fencing containing racks, each of which is covered by an annular energy-absorbing elements, guide beams connected to the outer surface of the energy-absorbing elements from two sides with the possibility of rotation in a horizontal plane, while the energy-supporting element is oval, oriented across the road with a larger axis and mounted on the rack the middle part, the guide beams are installed parallel to the small axes of the energy-absorbing elements and are formed from articulated parts and connected to energy-absorbing elements with the possibility of longitudinal movement, while the opposite guide beams are interconnected by a flexible connection (Copyright certificate No. 1677348, IPC E01F 15/00, 1989 (analogue)).

Known road fencing containing installed on the side of the carriageway of the rack, each of which is covered by energy-absorbing elements, the inner diameter of which is larger than the diameter of the rack, and connected to it with the removal of the energy-absorbing element in the direction of the carriageway, guide elements connected to the outer surface of the energy-absorbing elements with the possibility longitudinal displacements of rotation in the horizontal plane, the guiding elements are made in the form of bars, the front end in the direction of movement is each the first of which is connected to the energy-absorbing member from the roadway and the rear - by the curb (inventor's certificate №1539254, IPC E01F 15/00, 1988 (an analogue)).

A road fence is known, comprising a support column, on which an intermediate spacer element is fastened relative to it by means of a finger, and is connected at one end to the enclosing panel, wherein said holder element is made of a box structure with a vertical plate wall having structural weakening sections, one of which is located in the zone of attachment of the holder element by means of a finger, and the other from the side of the enclosing panel (RF patent No. 2093636, IPC E01F 15/00, 19 97 (analog)).

The closest in technical essence to the claimed is the initial section of the road fence, containing a number of struts rigidly fixed in the roadway, the fence beam installed on the racks, at the initial end of which is placed with the possibility of moving along the beam under the influence of a frontal impact of the vehicle, a buffer consisting of rigidly interconnected heads and shanks, while the head is made in the form of a hollow body formed by a shock plate, base and upper surface s, diverging from the shank, and two side walls installed at an angle to each other with the formation of a gradually tapering from the shank to the shock plate of longitudinal section, a gap is formed between one of the side walls and the shock plate, through which a curved free the end of the other side wall with the formation of the mouth of the exit of the beam between the side walls, the shank is made in the form of a rigid three-dimensional spatial frame, covering the beam of the fence, each of the first two pillars the torons of the buffer head are made up of a joint pivotally connected to each other of the base and the cantilever part, which is configured to tip over under the influence of the buffer head during a frontal impact of the vehicle, while the shank frame is mounted on the cantilever part of the first strut, to the base of which one of the ends is tight tensioned cable, the second end of which is fixed on the beam (brochure EURO - ET, Trinity Industries, Inc., 2002 (prototype)).

A disadvantage of the design of the known initial section of the road fence is that when the roadway is contaminated, including when snow gets between the fence beam and the roadway, there is a danger of unreliable operation of this structure due to the fact that the fence beam that emerges from the buffer during impact may crash into the roadway, such as snow on the roadway, and will create resistance that impedes the movement of the buffer along the beam, which in turn can lead to a change in the trajectory of the zheniya buffer, jamming fence beam device with loss of working capacity and catastrophic damage to the vehicle or its ejection in adjacent lanes.

SUMMARY OF THE INVENTION

When creating the invention, the problem of improving traffic safety was solved.

The technical result is the provision of the possibility of forming a spiral movement upward coming out of the buffer during the impact of the beam fencing.

The specified technical result is achieved due to the fact that the initial section of the road fence, characterized by a number of struts rigidly fixed in the roadway, mounted on the racks by a fence beam, at the initial end of which is placed with the possibility of moving along the beam under the influence of a frontal impact of the vehicle, a buffer consisting of rigidly interconnected heads and shanks, while the head is made in the form of a hollow body formed by a shock plate, base and upper a surface diverging from the shank and two side walls mounted at an angle to each other with the formation of a gradually tapering longitudinal section from the shank to the impact plate, a gap is formed between one of the side walls and the impact plate, through which a curved free wall is extended outside this side wall the end of the other side wall with the formation of the mouth of the beam exit between the side walls, while a curved guide fixed to the curved end of the second side wall is mounted cheniem possible reduction with respect to the radius of the bent free end of the second rear lower edge bend radius wall exiting the buffer during impact fence beam.

The initial section of the road fence, characterized in that the curved guide is placed below the longitudinal axis of symmetry of the fence beam.

The initial section of the road fence, characterized in that the width of the mouth of the beam exit is chosen equal to at least 0.35 of the height of the beam profile of the fence.

The initial section of the road fence, characterized in that the curved guide is made in the form of a part of the ring mounted in the curved end of the second side wall so that the latter is located relatively to the part of the ring diagonally from the corner of the ring part adjacent to it from the mouth side to the opposite corner of its opposite side.

The initial section of the road fence, characterized in that each of the two first on the side of the buffer head of the guard racks is made up of a joint pivotally connected to each other of the base and the cantilever part, which is configured to tip over under the influence of the buffer head during a frontal impact of the vehicle.

The initial section of the road fence, characterized in that the shank of the buffer is made in the form of a rigid three-dimensional spatial frame covering the beam of the fence attached to the cantilever part of the first fence post.

The initial section of the road fence, characterized in that it is equipped with a cable installed with the possibility of tension, one of the ends of which is fixed at the base of the first guard post, and the second on the beam.

The initial section of the road fence, characterized in that the second end of the cable is fixed to the longitudinal axis of symmetry of the beam.

Keeping in the design of the declared initial section of the road fence a curved guide, which with its shape and location made it possible to shift the lower edge of the fence that came out of the buffer during the impact of the fence beam after exiting the mouth so that in the future there is unhindered spiral movement of the twisted beam over the surface of the road surface and above the road fence, eliminates jamming of the spent beam both in the device itself, and in the soil, in the snow. Depending on the radius of the protruding part of the ring in front of the curved end of the second side wall and the height of its location relative to the longitudinal axis of symmetry of the fencing beam, you can choose the angle of inclination of the beam exit in relation to the corresponding terrain along which the roadway passes, while the design of the known initial section the road fence not only does not allow to take up the beam that has left the buffer during the impact, but also contributes to the fact that the fence beam under the action of weight tends to go to the roadway.

Thus, a comparison of the properties of the set of essential features of the structures of the claimed and known initial sections of the road fence showed that the creation of the claimed design of the initial section of the road fence, which allows providing the possibility of forming a spiral movement upward from the buffer during the impact of the fence beam, allowed to solve the problem facing specialists in this area over the years: take the beam of the fence from the car and the environment so that it did not constitute a danger to other road users after the accident and provided greater road safety.

List of figures of drawings and other materials

The invention is illustrated by the description of a specific example of its implementation and the accompanying drawings, where:

figure 1 shows the initial section of the road fence, General view;

figure 2 - node And figure 1 (fastening the end of the cable to the base of the front rack);

figure 3 is a section bB of figure 1 (buffer in section, top view);

figure 4 - section bb In figure 1 (elements of the box head buffer);

figure 5 - the path of the beam fencing under the influence of the buffer during a frontal impact;

6 is a section G-G of figure 1 (mounting the buffer to the rack and the relative position of the buffer and the beam fencing);

Fig.7 is a view D of Fig.1 (fastening of the end of the cable in the beam of the fence, in the context).

Information confirming the possibility of carrying out the invention

The initial section of the road fence contains a number of struts 2 rigidly fixed in the roadbed 1 of the road, a guard beam 3 mounted on the struts 2, at the initial end of which is placed buffer 4 (Fig. 1) to move along the fence beam 3 under the influence of a frontal impact of the vehicle.

Racks 2 can be made of metal, for example, in the form of a channel or a C-shaped bent profile. Each of at least two, as shown in our example, the first on the side of the buffer head of the first rack 5 and the second rack 6 of the road fence is made up of a base 7 hingedly connected to each other and a cantilever 8 mounted to allow tipping under the influence of the head 9 of the buffer with a frontal impact of the vehicle (figure 2). To this end, each of the bases of the first strut 5 and the second strut 6 has a part protruding above the web, to which, for example, by means of a bolt connection 10, a pivot cantilever portion 8 of the corresponding strut 5 or 6 is attached. A chamfer is made from the base 7 at the bottom of the cantilever portion 8, console part 8 to tip over under the influence of the head 9 of the buffer. Racks 5 and 6 are interconnected by an angular beam 11, which is laid along the roadway and above it to provide a more rigid mutual position in the ground of the roadway, thereby contributing to the accurate work of the swivel to tilt the cantilever part 8 without bending the racks 5 and 6.

The beam 3 of the fence is made in accordance with GOST 26804-86 from metal, for example from a steel bent profile, such as a wave, with a profile height, for example, 83 mm.

The buffer 4 consists of a rigidly interconnected head 9 and a shank 12.

The head 9 is made in the form of a hollow body formed by the shock plate 13, the base 14, the upper surface 15, the side walls 16 and 17 (figure 3).

The impact plate 13 is rigidly connected, for example by welding, to the base 14, the upper surface 15 and by means of an L-shaped stiffening rib 18 with the second side wall 17. From the open side, the impact plate 13 has bent vertical sides 19.

The side walls 16 and 17 are installed at an angle to each other with the formation of gradually tapering from the shank 12 to the impact plate 13 of a longitudinal section with the formation of the mouth 20 (figure 4). The width of the mouth 20 of the beam exit can be selected equal to at least 0.35 of the profile height of the beam 3 fencing.

The front side wall 16 is made shorter than the second side wall 17 and installed so that a gap 21 is formed between the first 16 side wall and the impact plate 13. Through the gap 21 outside the first 16 side wall, i.e. of this side wall, the curved free end 22 of the second 17, i.e. another side wall with the formation of the mouth 20 for the exit of the beam 3 between the side walls 16 and 17 under the influence of the buffer 4 during an impact during a collision of a car (not shown in Fig.) on the impact plate 13.

In the bent end 22 of the second 17 side wall, for example, below the longitudinal axis of symmetry 23 of the beam 3 of the fence rigidly, for example by welding, a curved guide 24 is fixed.

The guide 24 is installed with the possibility of reducing the radius of bending 25 of the lower edge 26 emerging from the buffer 4 during the impact of the beam 3 fencing (figure 5). For this, the curved guide 24 can be made, for example, in the form of a segment of the ring 27 mounted in the curved end 22 of the second 17 side wall, for which a slot can be made in the curved end 22 into which the segment of the ring 27 is inserted, so that it did not interfere with the exit of beam 3 from buffer 4 during impact. The segment of the ring 27 to provide rigidity can abut one of the end faces against an L-shaped stiffening rib 18 connecting the second side wall 17 and the impact plate 13, while the curved end 22 is located relative to the segment of the ring 27 diagonally from the corner adjacent to it from the mouth 20. segment of the ring 27 to the opposite corner of the opposite end side 28 of the segment of the ring 27 (figure 3).

The base 14 and the upper surface 15 have the same configuration, while they are made diverging from the shank relative to the longitudinal axis of symmetry 23 of the beam 3, i.e. the base 14 goes down, and the upper surface 15 goes up, thereby providing an unhindered exit from the buffer of the beam 3, increased in height as a result of the straightening of the waves of its profile when passing through the mouth 20 when the device is triggered by impact. After the mouth 20, both the base 14 and the upper surface 15 have horizontal sections 29.

Between the base 14 and the upper surface 15 there is a partition 30 mounted on the first 16 side wall parallel to the impact plate 13.

Between the partition 30 and the first 16 side wall at the level of the longitudinal axis of symmetry 23 of the beam is rigidly fixed, for example by welding, a rib 31 protruding beyond the curved end 22 of the second 17 side wall.

The shank 12 of the buffer 4 is made in the form of enclosing the beam 3 fencing rigid three-dimensional spatial frame 32 (Fig.6). The frame 32 can be made of interconnected channels 33. Ears 34 are welded to the frame 32, through which the shank 12 of the buffer is mounted on the cantilever part 8 of the first 5 racks using, for example, a bolted connection.

Based on the first 7 of the first 5 guard rails, by means of a strap 35 adjacent to the part of the base 7 protruding above the ground and pressed by a nut, for example, a well-known screw-nut mechanism 36, in the screw of which the first end of the cable 37 is fixed in a traditional manner, for example by crimping (Fig. .2).

The second 38 end of the cable 37 is fixed on the beam 3 on the longitudinal axis 23 of its symmetry. For this, the second end 38 of the cable 37 is also traditionally fixed, for example, by crimping inside the screw 39 of the second screw-nut mechanism 40, while the screw 39 is placed inside the cup 41, in the bottom of which there is an opening for the screw 39 to exit outward with a nut 42 resting against the bottom of the cup 41. On the outer surface of the cup 41 there is a series of toothed grips 43 equally spaced along the length of the cup 41 at the same distance from each other.

In the beam 3 of the fence along the longitudinal axis of symmetry 23, a series of holes 44 are made uniformly spaced along the axis 23 at the same distance from each other, and the distance between the holes 44 is equal to the distance between the hooked jaws 43.

When installing the buffer 4, hook hooks 43 are inserted into the holes 44 of the beam 3 and, by means of the screw-nut 36 and 40 mechanisms, the cable 37 is tightened tightly. Thus, we can say that the initial section of the road fence is equipped with a cable installed with the possibility of tension, one of the ends of which is fixed at the base of the first guard post, and the second on the beam, for example, on the longitudinal axis of its symmetry.

The device operates as follows.

When impacted upon impact of the vehicle on the impact plate 13 of the buffer 4, the bolt joints in the ears 34 are simultaneously cut off at the installation site of the buffer 4 on the cantilever part 8 of the first rack 5. Under the influence of the buffer 4, which started moving under the influence of the impact, the cantilever part 8, rotating around the bolt in place connection to the base 7 of the rack 5, tilts. The buffer 4, moving further, is pushed onto the beam 3, which at this moment is prevented from shifting, bending and leaving the tensioned cable 37, which allows you to create the initial section of the unfolded beam 3, emerging from the mouth 20. By impact of the shank 12 of the buffer 4 on the end of the glass 41 gear the grippers 43 disengage from the beam 3, and the rope 37 falls to the ground. The buffer 4 can continue to move along the beam 3. If the impact energy has not yet been completely extinguished, the second rack 6 is cut off and the beam 3 is attached to it, ensuring the movement of the buffer 4 along the beam. The profile of the beam 3 coming from the mouth 20 of the beam 3 is smoothed out, while the lower edge 26 of the beam 3 under the action of a curved guide 24 has a bending radius smaller than the radius of curvature of the upper edge of the beam 3, as a result of which the angle of inclination of the unfolded beam 3 is formed so that the straightened section of the beam 3, bypassing obstacles, snow, etc., is formed into a spiral that rises both above the road and above the fence itself, without interfering with the movement of the buffer 4 along the beam 3 of the fence under the action of a buffer strike.

Thus, when the car hits the shock plate 13 of the buffer 4, it perceives the kinetic energy of the car and starts to move with it. At the same time, the beam 3 of the fence, held in the initial period of impact by the cable 37 from displacement, falls into the mouth 20 of the buffer 4, straightens and, falling on the curved guide 24, twists into a spiral, leaving in the opposite direction from the car. The buffer 4, making movement along the beam 3 of the fence, while straightening and wrapping it in the opposite direction from the car, extinguishes the kinetic energy of the car and stops it. 4 racks overturned during the movement of the buffer due to the hinged mounting fall under the bottom of the car in the direction of its movement, and after the accident is liquidated, they are re-ready for use.

The tests showed that the overload experienced by passengers in a collision does not exceed 7g, i.e. almost two times less than the permissible long-term overloads, the value of which is set to 12 g, and without deformation of the passenger compartment.

The impact energy absorbed in this way prevents dangerous deformations of the passenger compartment, i.e. jamming of doors or pinched parts of the body by displacement of the internal structural elements of the car and thus save the life of the driver and passengers.

After the accident has been eliminated, the used section of the beam 3 is disconnected and replaced with a new one, the bent profile posts 2 are replaced. The buffer 4, the bases 7 and the cantilever 8 parts of the first two posts 5 and 6, the cable 37 and its fasteners can be used repeatedly.

Claims (8)

1. The initial section of the road fence, characterized by a number of struts rigidly fixed in the roadway, mounted on the racks by a fence beam, at the initial end of which is arranged to move along the beam under the influence of a frontal impact of the vehicle, a buffer consisting of a head and a shank rigidly interconnected wherein the head is made in the form of a hollow body formed by a shock plate, a base and an upper surface diverging from the shank, and two side walls ka installed at an angle to each other with the formation of a longitudinal section gradually tapering from the shank to the impact plate, a gap is formed between one of the side walls and the impact plate, through which the curved free end of the other side wall is led outside this side wall to form the mouth of the beam exit fences between the side walls, while in the curved end of the second side wall a curved guide is rigidly fixed, which is installed with the possibility of reduction with respect to the radius at the free end of the second curved rear edge of the bending radius of the lower wall leaving the buffer during impact fence beam. 2. The initial section of the road fence according to claim 1, characterized in that the curved guide is made in the form of a part of the ring mounted in the curved end of the second side wall so that the latter is located relative to the part of the ring diagonally from the corner part of the ring adjacent to it from the mouth side. to the opposite corner of her opposite side. 3. The initial section of the road fence according to claim 1, characterized in that the curved guide is placed below the longitudinal axis of symmetry of the fence beam. 4. The initial section of the road fence according to claim 1, characterized in that the width of the mouth of the beam exit is chosen equal to at least 0.35 of the profile height of the beam fence. 5. The initial section of the road fence according to claim 1, characterized in that each of at least the first two on the side of the buffer head of the guard racks is made up of a base articulated to each other and installed to allow tipping under the influence of the buffer during a frontal impact of the vehicle means of the console part. 6. The initial section of the road fence according to claim 1, characterized in that the shank of the buffer is made in the form of a rigid surround spatial frame enclosing the fence beam and is mounted on the cantilever part of the first rack. 7. The initial section of the road fence according to claim 1, characterized in that it is equipped with a cable installed with the possibility of tension, one of the ends of which is fixed at the base of the first guard post, and the second on the beam. 8. The initial section of the road fence according to claim 7, characterized in that the second end of the cable is fixed to the longitudinal axis of symmetry of the beam.

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