A restorable X-shaped cable anti-collision structure suitable for bridges

Abstract

The present invention relates to the technical field of bridge guardrails, and discloses a restorable X-shaped cable anti-collision structure suitable for bridges, comprising a combined stopper, a combined steel bar, and a side fixing plate, wherein the combined steel bar is an "X"-shaped structure composed of a first steel bar and a second steel bar, and the middle parts of the first steel bar and the second steel bar are hinged by a pin shaft; the bottom of the side fixing plate is fixed to both sides of the top of the bridge deck, and the two ends of the inner side wall of the side fixing plate and the combined stopper are provided with a rectangular slideway, and the two ends of the first steel bar and the second steel bar slide in cooperation with the slideway; a small steel spring connected to the inner side wall of the end of the combined steel bar is provided between the inner side wall of one side of the slideway close to the middle of the side fixing plate. The present invention can withstand various degrees of impact force, is not easily damaged after repeated use, and can automatically restore its original shape, and has high economic practicality.

Description

Technical Field

[0001] The invention relates to the technical field of bridge guardrails, in particular to a recoverable X-shaped cable anti-collision structure suitable for bridges. Background Art

[0002] In recent years, with the rapid and stable economic development, government departments have continuously increased their investment in road traffic construction, and my country has formed a relatively complete transportation network system. Distance will no longer be an obstacle to people's communication and economic development, but will expand the original market in various regions. However, more and more people choose to travel by car quickly and conveniently, which not only brings huge pressure to road traffic, but also greatly increases the risk of road safety. The number of casualties caused by traffic accidents around the world each year has reached a terrifying number. Whether it is for the perpetrators or the victims, the tragic accidents are behind huge economic losses and harm to several families. In view of this phenomenon, how to reduce the impact of traffic accidents is a difficult problem that researchers need to solve.

[0003] The purpose of bridge guardrails is to prevent out-of-control vehicles from going over the bridge. They have the function of preventing vehicles from breaking through, passing under, or climbing over the bridge, and can effectively reduce the damage caused to the occupants of the vehicle during a collision. The setting of anti-collision structures in different sections on different bridges should be based on factors such as the frequency of accidents on the section, the degree of danger of the external environment, and the most common types of vehicles. Each section is equipped with anti-collision structures of different types and protection levels according to its own complex external environment, which is more targeted and reasonable, and greatly saves resources while protecting safety. However, most of the guardrails currently used on bridges use simple reinforced concrete wall-type rigid structure guardrails, which only rely on friction, climbing, and turning to consume the energy generated during a collision. Therefore, guardrails of this structure have a short service life, are easy to be scrapped, and are prone to causing secondary damage to the occupants of the vehicle. Summary of the invention

[0004] In view of the above existing situation, the present invention provides an anti-collision structure that can withstand various degrees of impact, is not easily damaged after repeated use, and can automatically restore to its original state. The wave-shaped combined block is used to buffer the huge impact force, and the energy generated by the collision is consumed and converted through the compression of steel springs, the relative movement of magnets with the same magnetic polarity, the friction between the surfaces of the sliders, and the stretching of the cable. When the structure undergoes elastic deformation to the maximum deformation, the accumulated converted energy also reaches the maximum limit. Since the elastic deformation has the characteristic of restoring its own shape, the thrust generated to hinder the further movement of the vehicle can also cause the structure to automatically restore.

[0005] The technical solution adopted to achieve the above-mentioned purpose is as follows: the present invention discloses a restorable X-shaped cable anti-collision structure suitable for bridges, comprising a combined stopper, a combined steel bar, and a side fixing plate, wherein the combined steel bar is an "X"-shaped structure composed of a first steel bar and a second steel bar, and the middle parts of the first steel bar and the second steel bar are hinged by a pin shaft; the bottom of the side fixing plate is fixed to both sides of the top of the bridge deck, and the side fixing plate and the two ends of the inner side wall of the combined stopper are provided with a rectangular slide, and the two ends of the first steel bar and the second steel bar cooperate with the slide to slide; a small steel spring connected to the inner wall of one side of the slide close to the middle of the side fixing plate and the inner wall of the end of the combined steel bar is provided between them.

[0006] The combined stopper is composed of a front rubber air cushion stopper and a rear steel structure stopper. The front wall of the rubber air cushion stopper is wavy and provided with tiny air holes.

[0007] Four magnets with the same magnetic poles are fixed on the outer side walls of the ends of the combined steel bars.

[0008] A transition plate is fixed at both ends of the inner wall of the side fixing plate, and a first slide groove for sliding of the nested structure is provided at the outer end of the inner wall of the transition plate, and the cross-section of the first slide groove is an isosceles trapezoidal structure that is narrow on the outside and wide on the inside, and the cross-section of the nested structure is an octagonal structure with sliding blocks matching the shape of the first slide groove formed at both ends; a second slide groove for sliding of the magnetic plate is provided at the inner end of the inner wall of the transition plate, and a second magnetic plate with the same magnetic pole as the magnetic plate is provided on the inner wall of the side fixing plate; large steel springs are provided between the two side walls of the nested structure and the outer wall of the magnetic plate and the inner wall of the combined stopper.

[0009] The nested structure is composed of an octagonal column, an elliptical column and a cylindrical column which are nested in sequence, and a gap for sliding is provided at the socket joint of the three.

[0010] An upper and a lower combined steel bar are arranged between the combined stopper and the side fixing plate. The combined steel bar is provided with a through hole for a pull rope to pass through. The two combined steel bars are connected by the pull rope, and the middle part of the pull rope is in an "X" shape.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention utilizes a combined structure of a wavy rubber air cushion block with micro-pores and a steel plate, which has good protection, improves the buffering capacity and impact resistance of a single rubber air cushion, prevents the internal structure from being directly stressed, reduces destructive force, and increases the service life of the internal structure; the structure is not easily damaged, reducing the probability of secondary injury to personnel.

[0013] 2. The present invention firstly utilizes cables, springs, the same magnetic phase movement, and sliding friction to hinder the rotation of the combined steel bars. After a certain displacement, the uneven friction energy is consumed through the polygonal nested structure, and then the spring is compressed to push the movement of the magnetic plate; the maximum deformation is achieved layer by layer, and the impact force is gradually increased; the gradient of the impact force makes this anti-collision structure suitable for various stress conditions, and has a wide range of applicability in the field of protection.

[0014] 3. The present invention converts part of the energy generated by the collision into its own elastic potential energy and magnetic field energy, which can achieve automatic reset, achieve repeated use, and reduce waste of resources; compared with the current anti-collision structure, its automatic reset ability also reduces the cost of manual disassembly and assembly, which is in line with the principle of green development. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a partial structural schematic diagram of the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of the nested structure in the present invention;

[0018] Figure 4 It is a schematic diagram of the structure of the combined steel bar in the present invention;

[0019] Figure 5 It is a connection schematic diagram of the present invention;

[0020] Figure 6 The figure is a construction device diagram of the present invention applied to a bridge.

[0021] In the figure: 1 combined block, 2 combined steel bar, 21 first steel bar, 22 second steel bar, 23 pin, 3 side fixing plate, 4 slide, 5 small steel spring, 6 magnet, 7 transition plate, 8 nested structure, 9 first slide, 10 magnetic plate, 11 second slide, 12 large steel spring, 13 pull rope, 14 bolt, 15 bridge deck. DETAILED DESCRIPTION

[0022] The following is a complete and clear description of the technical solution in the example of the present invention in conjunction with the accompanying drawings in the example of the present invention:

[0023] See also Figure 1-6 .

[0024] The present invention discloses a restorable X-shaped cable anti-collision structure suitable for bridges. The present invention discloses a restorable X-shaped cable anti-collision structure suitable for bridges, comprising a combined stopper 1, a combined steel bar 2, and a side fixing plate 3. The combined steel bar 2 is an "X"-shaped structure composed of a first steel bar 21 and a second steel bar 22, and the middle parts of the first steel bar 21 and the second steel bar 22 are hinged by a pin 23; the bottom of the side fixing plate 3 is fixed to both sides of the top of the bridge deck 15, and the two ends of the inner side wall of the side fixing plate 3 and the combined stopper 1 are provided with a rectangular slide 4, and the two ends of the first steel bar 21 and the second steel bar 22 cooperate with the slide 4 to slide; a small steel spring 5 connected to the slide 4 is provided between the inner wall of one side of the slide close to the middle of the side fixing plate 3 and the inner wall of the end of the combined steel bar 2, and the contact surface between the bottom of the combined steel bar 2 and the slide 4 has a large friction coefficient, and a part of the energy generated by the impact is converted into heat energy and dissipated through sliding friction.

[0025] The combined block 1 is composed of a rubber air cushion block in the front and a steel structure block in the rear. The front wall of the rubber air cushion block is wavy and has tiny pores, which plays a good buffering and protective role. The process of squeezing the air in the rubber air cushion through the small holes to release it also does work and consumes part of the energy.

[0026] Four magnets 6 with the same magnetic poles are fixed on the outer side wall of the end of the combined steel bar 2.

[0027] A transition plate 7 is fixed at both ends of the inner wall of the side fixing plate 3, and a first slide groove 9 for sliding of the nesting structure 8 is provided at the outer end of the inner wall of the transition plate 7, and the cross-section of the first slide groove 9 is an isosceles trapezoidal structure that is narrow on the outside and wide on the inside, and the cross-section of the nesting structure 8 is an octagonal structure, and sliders matching the shape of the first slide groove 9 are formed at both ends; a second slide groove 11 for sliding of the magnetic plate 10 is provided at the inner end of the inner wall of the transition plate 7, and a second magnetic plate with the same magnetic pole as the magnetic plate 10 is provided on the inner wall of the side fixing plate 3; a large steel spring 12 is provided between the two side walls of the nesting structure 8 and the outer wall of the magnetic plate 10 and the inner wall of the combined stopper 1.

[0028] The nested structure 8 is composed of an octagonal column 81, an elliptical column 82 and a cylindrical body 83 which are nested in sequence. A gap for sliding is provided at the joint of the three. The side surfaces of the columns have a large friction coefficient. The nested structure 8 increases the friction area and the energy consumed by sliding friction. A certain amount of movable gap is conducive to bearing the impact force from the oblique direction.

[0029] An upper and a lower combined steel bar 2 are provided between the combined stopper 1 and the side fixing plate 3. The combined steel bar 2 is provided with a through hole for the pull rope 13 to pass through. The two combined steel bars 2 are connected by the pull rope 13. The middle part of the pull rope 13 is in an "X" shape, with an upper straight pull rope and a lower "X" pull rope. The "X" type cable structure has excellent force-bearing capacity and converts more energy into elastic potential energy, which acts on the subsequent automatic reset behavior. The connection rotation ability can make the structure have a telescopic distance, which is convenient for improving the buffering performance and utilizing sliding friction energy dissipation.

[0030] The anti-collision structure is connected to each other according to a number of unit structures and fixed to both sides of the edge of the bridge deck 15 by bolts 14, and relies on the bridge deck 15 to transmit the force downward, transferring the excess energy that cannot be stored and consumed to the earth.

[0031] Working principle: When a vehicle loses control and hits the anti-collision structure, the wavy rubber air cushion block with micro pores at the front end of the combined block 1 is squeezed and deformed by force, and the exhaust gas consumes energy to play a buffering role. The rigid baffle at the rear bears the impact force and transmits it to the upper and lower symmetrical combined steel bars 2 to rotate; as the ends of the first steel bar 21 and the second steel bar 22 slide along the slide 4 in opposite directions, the small steel spring 5 stretches and accumulates elastic potential energy, the rough bottom surface of the slide 4 moves relative to the bottom to generate heat energy, and the two magnets 6 fixed with the same magnetic poles are pushed closer to gradually transform the magnetic energy, and the lower "X" pull rope and the upper straight pull rope are driven to stretch, hindering the further deformation of the structure. Assuming that the above structure is not enough to withstand the huge impact force, the pull rope 13 pushes the polygonal nested structure 8 to slide and rub on the first slide 9, and the large steel spring 12 fixed on the polygonal nested structure 8 compresses and pushes the magnetic plate 10 with the same magnetic properties to slide in the second slide 11, and a repulsive force is generated between the two magnetic plates with the same magnetic properties. When the sliders at both ends of the nested structure 8 reach the slots and the large steel spring 12 and the small steel spring 5 have not reached their maximum deformation, the anti-collision structure reaches its maximum deformation limit.

[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. For those skilled in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles of the present invention. All equivalent transformations made by using the contents of the present invention and the drawings or directly or indirectly applied in related technical fields are also included in the patent protection scope of the present invention.

Claims

1. A restorable X-shaped cable anti-collision structure suitable for a bridge, the structural features of which are: comprising a combined stopper (1), a combined steel bar (2), and a side fixing plate (3), wherein the combined steel bar (2) is an "X"-shaped structure composed of a first steel bar (21) and a second steel bar (22), wherein the middle parts of the first steel bar (21) and the second steel bar (22) are hinged via a pin (23); the bottom of the side fixing plate (3) is fixed to both sides of the top of the bridge deck (15), and rectangular slideways (4) are provided at both ends of the inner side wall of the side fixing plate (3) and the combined stopper (1), and the first steel bar (21) and the second steel bar (22) are connected to the slideway (4) at both ends. ) cooperate and slide; a small steel spring (5) connected to the inner wall of the end of the combined steel bar (2) is provided between the inner wall of one side of the slideway (4) close to the middle of the side fixing plate (3); four magnets (6) with the same magnetic poles are fixed on the outer wall of the end of the combined steel bar (2); transition plates (7) are fixed at both ends of the inner wall of the side fixing plate (3); the outer end of the inner wall of the transition plate (7) is provided with a first slide groove (9) for the nesting structure (8) to slide, the cross section of the first slide groove (9) is an isosceles trapezoidal structure with a narrow outer side and a wide inner side, the cross section of the nesting structure (8) is an octagonal structure, and sliders matching the shape of the first slide groove (9) are formed at both ends. The inner end of the inner wall of the transition plate (7) is provided with a second slide groove (11) for the magnetic plate (10) to slide, and the inner wall of the side fixing plate (3) is provided with a second magnetic plate with the same magnetic pole as the magnetic plate (10); large steel springs (12) are provided between the two side walls of the nested structure (8) and the outer wall of the magnetic plate (10) and the inner wall of the combined stopper (1); the nested structure (8) is composed of an octagonal column (81), an elliptical column (82) and a cylindrical body (83) which are nested in sequence, and a gap for sliding is provided at the socket connection of the three; an upper and a lower combined steel bar (2) are provided between the combined stopper (1) and the side fixing plate (3), and the combined steel bar (2) is provided between the combined stopper (1) and the side fixing plate (3); The strip (2) is provided with a through hole for the pulling rope (13) to pass through, and the two combined steel strips (2) are connected by the pulling rope (13), and the middle part of the pulling rope (13) is in an "X"-shaped structure; when the vehicle loses control and collides with the anti-collision structure, as the ends of the first steel strip (21) and the second steel strip (22) slide along the slideway (4) in opposite directions, the small steel spring (5) is stretched to accumulate elastic potential energy, the rough bottom surface of the slideway (4) moves relative to the bottom to generate heat energy, and the two magnets (6) fixed with the same magnetic poles are pushed closer to each other to gradually transform the magnetic energy, and the lower "X"-shaped pulling rope and the upper straight pulling rope are driven to extend, thereby preventing the combined steel strip (2) from further deformation;When the combined steel bar (2) is insufficient to withstand the huge impact force, the pull rope (13) pushes the polygonal nested structure (8) to perform sliding friction movement on the first slide groove (9), and the large steel spring (12) fixed on the polygonal nested structure (8) compresses and pushes the slidable magnetic plate (10) with the same magnetic properties to slide in the second slide groove (11), and a repulsive force is generated between the two magnetic plates with the same magnetic properties. ;

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