A road noise reduction guardrail

Abstract

The present invention discloses a road noise reduction guardrail, which relates to the technical field of road guardrails, and comprises a noise reduction unit, including a barrier and a plurality of fixed blocks arranged on one side of the barrier surface; a storage unit, including a plurality of shielding plates, latches arranged between the shielding plates, positioning plates arranged at the ends of the shielding plates, and a connecting rod passing through the center of the positioning plates; the noise reduction unit is fixedly connected to the storage unit. The beneficial effect of the present invention is that the guardrail adopts a retractable design, which not only improves the efficiency of transportation and installation, but also enhances road safety through the flexible connection between the guardrails. Its adjustable characteristics make traffic management more flexible, and the integrated noise reduction function effectively improves the urban road environment.

Description

Technical Field

[0001] The present invention relates to the technical field of road guardrails, in particular to a road noise reduction guardrail. Background Art

[0002] Road guardrails are widely used in guiding traffic flow and dividing lanes. In order to cope with the usage conditions of different road sections, road guardrails are given different functions. For example, highway sections need to provide buffer zones for vehicles, urban sections also need to take into account the functions of quick paving and beautiful appearance, and sections near residential areas need to be able to reduce traffic noise and improve the living environment.

[0003] The road guardrails commonly used in cities are all welded in one piece. They have low storage efficiency during storage and transportation, and their installation flexibility is too low. When dividing traffic, they do not have a significant buffering effect on vehicles in emergencies, and are prone to rigid collisions with vehicles, causing serious damage. Therefore, there is a need for a guardrail that can be laid and transported on urban roads more conveniently, efficiently, and flexibly, reducing transportation and storage costs and lowering the requirements for permanent guardrail installation. In addition, sound barriers are usually installed on both sides of roads near residential areas, but such sound barriers are only used in special sections such as elevated sections, express sections, railway lines, and airport areas. The coverage rate is low, and residents on regular sections will still be affected by noise. Therefore, a road noise reduction guardrail is proposed to solve the above problems. Summary of the Invention

[0004] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a road noise reduction guardrail, which can solve the problem of low efficiency of traditional urban road guardrails during storage, transportation and installation, and can also solve the safety hazard of conventional urban guardrails having insufficient buffering effect in emergency situations, which can easily cause serious collision injuries; in addition, it effectively solves the problem of low coverage of traditional sound barriers and the limitation of being limited to specific road sections.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a road noise reduction guardrail, comprising a noise reduction unit including a barrier and a plurality of fixing blocks arranged on one side of a surface of the barrier;

[0007] The storage unit includes a plurality of shielding plates, latches disposed between the shielding plates, positioning plates disposed at the ends of the shielding plates, and a connecting rod extending through the center of the positioning plates; the noise reduction unit is fixedly connected to the storage unit;

[0008] The supporting unit includes a base, a storage tube arranged on the outer wall of the base, and a locking assembly arranged on one side of the storage tube; the other end of the storage unit is connected to the storage tube through the latch.

[0009] As a preferred embodiment of the road noise reduction guardrail of the present invention, the barrier comprises a plurality of reflective bends arranged on its surface; the barrier is made of a high-strength and lightweight material; and the surface of the barrier is coated with an acoustic metamaterial;

[0010] The fixing block includes engaging grooves arranged at both ends thereof.

[0011] As a preferred solution of the road noise reduction guardrail of the present invention, wherein: the shielding plate includes a first engaging groove provided on one side thereof, and a first engaging block provided on the other side of the shielding plate;

[0012] The positioning plate includes a second engaging block arranged on one side thereof, an accommodating cavity arranged inside the positioning plate, a straight groove arranged on the inner wall of the accommodating cavity, and a circular groove arranged on the inner wall of the accommodating cavity.

[0013] As a preferred solution of the road noise reduction guardrail of the present invention, the connecting rod includes limit strips arranged on both sides thereof, and a positioning sleeve arranged at the bottom of the connecting rod.

[0014] As a preferred solution of the road noise reduction guardrail of the present invention, wherein: the base includes a column arranged on its upper surface, and a hinged column arranged on one side of the column;

[0015] The storage tube includes a connecting column arranged on one side thereof, a second engaging groove arranged on one side of the connecting column, a handle arranged above the outer wall of the storage tube, and a plurality of limiting teeth arranged below the outer wall of the storage tube.

[0016] As a preferred solution of the road noise reduction guardrail described in the present invention, the locking assembly includes a rocker arm, a pair of locking blocks arranged on the upper surface of the rocker arm, a trigger column arranged at the end of the rocker arm, a locking cylinder arranged at the bottom of the trigger column, an inclined rod passing through the trigger column and the locking cylinder, and a spring arranged between the trigger column and the locking cylinder.

[0017] As a preferred solution of the road noise reduction guardrail described in the present invention, the rocker arm includes arc grooves arranged on both sides of its surface, a sleeve arranged at the end of the rocker arm, a hollow column arranged at the center of the sleeve, and a pair of horizontal grooves penetrating the side walls of the hollow column.

[0018] As a preferred solution of the road noise reduction guardrail of the present invention, the locking block includes a plurality of triangular teeth arranged on its side wall, and a spring piece arranged on the other side wall of the locking block.

[0019] As a preferred solution of the road noise reduction guardrail of the present invention, wherein: the trigger column includes a mounting column arranged on the top thereof, and an inclined groove penetrating the outer wall of the trigger column;

[0020] The locking cylinder includes an annular inclined surface provided on the inner wall of its opening;

[0021] The oblique rod includes horizontal rods arranged at both ends thereof.

[0022] Beneficial effects of the present invention: The present invention can significantly improve the storage efficiency of guardrails, reduce transportation and storage costs, while increasing the flexibility of laying and reducing dependence on permanent guardrail installation; through flexible connections between guardrails, the buffering effect is enhanced, and the degree of harm caused by collisions between vehicles and guardrails in emergency situations is reduced; in addition, the guardrail adopts a rollable design, and the road layout can be quickly adjusted as needed; importantly, the guardrail has an integrated noise reduction function, and the barrier is easy to set up, which effectively solves the limitations of traditional sound barriers, such as low coverage and being limited to specific sections of road, and provides comprehensive noise protection for ordinary urban roads, especially sections near residential areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is the overall effect diagram of the present invention.

[0025] Figure 2 Exploded view of the noise reduction unit of the present invention.

[0026] Figure 3 It is a three-dimensional rendering of the storage unit of the present invention.

[0027] Figure 4 It is a cross-sectional view of the connection of the storage unit of the present invention.

[0028] Figure 5 It is a transverse cross-sectional view of the storage unit of the present invention.

[0029] Figure 6 This is a three-dimensional rendering of the support unit of the present invention.

[0030] Figure 7It is a top view of the support unit of the present invention.

[0031] Figure 8 For the present invention Figure 7 AA full section view.

[0032] Figure 9 For the present invention Figure 7 BB full cross-section view.

[0033] Figure 10 For the present invention Figure 9 A partial enlarged view of the .

[0034] Figure 11 1 is an exploded view of the locking assembly of the present invention.

[0035] In the figure: 1. Noise reduction unit; 11. Barrier; 12. Fixing block; 2. Storage unit; 21. Shield; 22. Latch; 23. Positioning plate; 24. Connecting rod; 3. Support unit; 31. Base; 32. Storage cylinder; 33. Locking assembly; 111. Reflection bend; 121. Engaging groove; 211. First engaging groove; 212. First engaging block; 231. Second engaging block; 232. Accommodating cavity; 233. Straight groove; 234. Circular groove; 241. Limiting strip; 242. Positioning sleeve; 311. Column; 3 12. Positioning hole; 313. Articulated column; 321. Connecting column; 322. Second engaging groove; 323. Handle; 324. Limiting tooth; 331. Rocker arm; 332. Locking block; 333. Trigger column; 334. Locking cylinder; 335. Oblique rod; 336. Spring; 3311. Arc groove; 3312. Sleeve; 3313. Hollow column; 3314. Horizontal groove; 3321. Triangular tooth; 3322. Spring piece; 3331. Mounting column; 3332. Oblique groove; 3341. Annular slope; 3351. Cross bar. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0039] Example 1

[0040] Reference Figures 1 to 5 , which is the first embodiment of the present invention, provides a road noise reduction guardrail, which includes a noise reduction unit 1, including a barrier 11, and a plurality of fixing blocks 12 arranged on one side of the surface of the barrier 11;

[0041] The storage unit 2 includes a plurality of shielding plates 21, latches 22 arranged between the shielding plates 21, positioning plates 23 arranged at the ends of the shielding plates 21, and a connecting rod 24 passing through the center of the positioning plates 23; the noise reduction unit 1 is fixedly connected to the storage unit 2.

[0042] Furthermore, the barrier 11 includes a plurality of reflective bends 111 arranged on its surface; the barrier 11 is made of a high-strength and lightweight material; the surface of the barrier 11 is coated with an acoustic metamaterial;

[0043] The fixing block 12 includes engaging slots 121 disposed at both ends thereof.

[0044] Furthermore, the shielding plate 21 includes a first engaging groove 211 provided on one side thereof, and a first engaging block 212 provided on the other side of the shielding plate 21;

[0045] The positioning plate 23 includes a second engaging block 231 disposed on one side thereof, an accommodating cavity 232 disposed inside the positioning plate 23 , a straight groove 233 disposed on the inner wall of the accommodating cavity 232 , and a circular groove 234 disposed on the inner wall of the accommodating cavity 232 .

[0046] Furthermore, the connecting rod 24 includes limiting strips 241 disposed on both sides thereof, and a positioning sleeve 242 disposed at the bottom of the connecting rod 24 .

[0047] It should be noted that the barrier 11 is made of high-strength and lightweight materials as a whole, such as carbon fiber composite materials, which have an extremely high strength / weight ratio and are corrosion-resistant. They can be designed into a multi-layer structure to improve the sound absorption effect; such as aluminum honeycomb composite panels, whose honeycomb structure can effectively absorb sound wave energy and can effectively reduce noise; such as aerogel composite materials, which are ultra-lightweight, have excellent thermal insulation and sound insulation properties, and their nano-scale pore structure can effectively block the propagation of sound waves, and can be used as an efficient sound insulation layer or filling material.

[0048] The barrier 11 is evenly distributed with reflective bends 111 from top to bottom. If these bends 111 are arc-shaped, the barrier 11 appears wavy; if they are triangular, the barrier 11 appears serrated. Whether arc-shaped or serrated, the surface of the reflective bends 111 increases the contact area between the sound waves and the guardrail surface. When sound waves encounter this irregular surface, they scatter. As a result, the sound waves are reflected in different directions rather than being concentrated at a single point, reducing the directional propagation of sound.

[0049] Furthermore, the multiple reflective bends 111 can cause sound wave diffraction. When sound waves encounter the edge of an obstacle, they bend, helping to disperse the sound energy. If the size and spacing of each reflective bend 111 are precisely designed, they can produce a resonance effect for sound waves within a specific frequency range, converting some of the sound energy into heat, thereby achieving a sound-absorbing effect. Furthermore, the reflective bends 111 increase the surface area of ​​the barrier 11. This larger surface area interacts with sound waves, enhancing the overall sound insulation effect.

[0050] At the same time, the reflective bend 111 affects the airflow pattern. When wind blows over the guardrail, this structure can generate small-scale turbulence, which helps to further disperse the sound waves.

[0051] Preferably, in order to further enhance the noise reduction effect of the guardrail, it is necessary to coat the surface of the barrier 11 with an acoustic metamaterial. Acoustic metamaterials are a type of artificially designed composite material that can achieve extraordinary manipulation of sound waves by constructing periodic or non-periodic structural units on a subwavelength scale. These structural units can be composed of a variety of materials, such as polymers, metals, silicones, etc. The design of acoustic metamaterials can achieve exotic properties such as negative refraction, abnormal sound transmission, stealth, and anomalous Doppler effect. For example, acoustic metamaterials based on thin silicone rubber sheets can be manufactured using polymer molding methods and can be customized according to actual requirements in terms of sound insulation frequency, thermal insulation strength, weight, and thickness.

[0052] Preferably, the partition part of the guardrail is composed of multiple shielding plates 21, a first engaging groove 211 is provided in the middle position of one side of the shielding plate 21, and a first engaging block 212 is provided on the other side. Therefore, when the two shielding plates 21 are assembled, the first engaging block 212 of one of them can be inserted into the first engaging groove 211 of the other, and the joint of the two shielding plates 21 is penetrated from top to bottom by a pin 22. The pin 22 can be in the form of a combination of a long bolt rod and a nut, or it can be riveted after penetration.

[0053] Similarly, the remaining shielding panels 21 can continue to be assembled according to the above steps, and can be flipped over each other with the pin 22 as the axis. Therefore, the shielding panel 21 group composed of a large number of shielding panels 21 connected in series has a certain degree of flexibility and can be rolled up.

[0054] Preferably, at the connecting end of the shielding plate 21 set, i.e., on the side where the first engagement slot 211 is located, there is a positioning plate 23 connected via a latch 22. A second engagement block 231 is also provided on one side of the positioning plate 23, which has the same shape and function as the first engagement block 212. A through-hole 232 is formed at the axis of the positioning plate 23, into which the connecting rod 24 can be inserted. A symmetrical straight groove 233 is formed on the sidewall of the accommodating cavity 232, which runs from top to bottom. The straight groove 233 does not completely penetrate the upper and lower end surfaces of the positioning plate 23 and is used to limit the position of the connecting rod 24.

[0055] In addition, a circular groove 234 is provided in the middle portion of the accommodating cavity 232 , which completely covers the straight groove 233 .

[0056] Preferably, two symmetrically distributed limiting bars 241 are fixed on either side of the connecting rod 24. The limiting bars 241 completely fit the straight groove 233, allowing the connecting rod 24 to move axially along the accommodating cavity 232. Since the straight groove 233 does not completely penetrate the upper and lower end surfaces of the positioning plate 23, the limiting bars 241 will not fall out of the accommodating cavity 232. When the limiting bars 241 move into the circular groove 234, they can rotate therein. When the limiting bars 241 pass over the straight groove 233 below, the connecting rod 24 cannot move downward and is thus restricted to its current height. Only when it is realigned with the straight groove 233 can it continue to move downward.

[0057] A positioning sleeve 242 is also fixed to the bottom of the connecting rod 24, and the positioning sleeve 242 is hollow inside and open downward. A knurled column is also fixed to the top of the connecting rod 24, so that personnel can lift and rotate the connecting rod 24 up and down.

[0058] Preferably, the barrier 11 can be connected to the group of shielding plates 21 through the fixing block 12. Since it is necessary to ensure that the movement of each shielding plate 21 is not restricted, a gap is left between the shielding plates 21, and the fixing block 12 can be inserted into the gap and fix the two adjacent shielding plates 21 through the snap-fit ​​grooves 121 opened on both sides. The shape of the snap-fit ​​grooves 121 is consistent with the edge of the shielding plate 21, and can be inserted into the gap between the shielding plates 21 from top to bottom or from bottom to top. At this time, the barrier 11 can be fixed to the fixing block 12 by bolts.

[0059] Preferably, personnel can pre-connect the upper fixing blocks 12 so as to directly fix the barrier 11 on the surface of the shielding plate 21, and then supplement and fix the lower fixing blocks 12, which helps to reduce laying time, improve work efficiency, and achieve quick and convenient installation.

[0060] In summary, this design can flexibly install the barrier 11 on the guardrail near residential areas. The barrier is easy to install and effectively solves the limitations of traditional sound barriers, such as low coverage and being limited to specific sections of road. It provides comprehensive noise protection for ordinary urban roads, especially sections near residential areas.

[0061] In addition, when the fixing block 12 is inserted into the gap between the shielding plates 21 , the movement of two adjacent shielding plates 21 can be restricted, so that the movable connection between the shielding plates 21 becomes fixed, thereby enhancing the stability of the structure between the shielding plates 21 .

[0062] Example 2

[0063] Reference Figures 3 to 11 , which is the second embodiment of the present invention, which is different from the first embodiment in that: it also includes a supporting unit 3, including a base 31, a storage tube 32 arranged on the outer wall of the base 31, and a locking assembly 33 arranged on one side of the storage tube 32; the other end of the storage unit 2 is connected to the storage tube 32 through a pin 22.

[0064] Furthermore, the base 31 includes a column 311 disposed on its upper surface, positioning holes 312 disposed on both sides of the base 31 , and a hinge column 313 disposed on one side of the column.

[0065] The storage tube 32 includes a connecting post 321 disposed on one side thereof, a second engaging groove 322 disposed on one side of the connecting post 321 , a handle 323 disposed above the outer wall of the storage tube 32 , and a plurality of limiting teeth 324 disposed below the outer wall of the storage tube 32 .

[0066] Furthermore, the locking assembly 33 includes a rocker arm 331, a pair of locking blocks 332 arranged on the upper surface of the rocker arm 331, a trigger column 333 arranged at the end of the rocker arm 331, a locking cylinder 334 arranged at the bottom of the trigger column 333, an inclined rod 335 arranged between the trigger column 333 and the locking cylinder 334, and a spring 336 arranged between the trigger column 333 and the locking cylinder 334.

[0067] Furthermore, the rocker arm 331 includes arcuate grooves 3311 arranged on both sides of its surface, a sleeve 3312 arranged at the end of the rocker arm 3311, a hollow column 3313 arranged at the inner center of the sleeve 3312, and a pair of horizontal grooves 3314 arranged through the side walls of the hollow column 3313.

[0068] Furthermore, the locking block 332 includes a plurality of triangular teeth 3321 disposed on a side wall thereof, and a spring piece 3322 disposed on another side wall of the locking block 332 .

[0069] Furthermore, the trigger column 333 includes a mounting column 3331 disposed on the top thereof, and an inclined slot 3332 penetrating the outer wall of the trigger column 333;

[0070] The locking cylinder 334 includes an annular inclined surface 3341 provided on the inner wall of its opening;

[0071] The oblique rod 335 includes horizontal rods 3351 provided at both ends thereof.

[0072] It should be noted that a column 311 is fixed at the center of the upper surface of the base 31, and the storage tube 32 is sleeved on the outer wall of the column 311 and can rotate about the column 311. To ensure that the storage tube 32 does not move axially, a limit post with a diameter larger than the inner diameter of the storage tube 32 is provided on the top of the column 311. In addition, two symmetrically distributed positioning holes 312 are opened on both sides of the base 31.

[0073] On the perpendicular bisector of the line connecting the two positioning holes 312, a hinge column 313 is fixed on one side of the column 311. The hinge column 313 can be hinged to the end of the rocker arm 331. In order to prevent the rocker arm 331 from detaching from the hinge column 313, a limiting column is also fixed on the top of the hinge column 313.

[0074] Preferably, a connecting column 321 is fixed to one side of the outer wall of the storage tube 32, and a second engagement groove 322 is also provided in the middle of the connecting column 321. The second engagement groove 322 has the same function as the first engagement groove 211, and is used to connect to one end of the first engagement block 212 of the shielding plate 21 group. The connection between the two is also connected by a latch 22, allowing relative movement. A handle 323 is also fixed to the top outer wall of the storage tube 32. By rotating the handle 323, a person can drive the storage tube 32 to rotate and fold or unfold the shielding plate 21 group. Circumferentially distributed limiting teeth 324 are also fixed to the bottom of the outer wall of the storage tube 32, and the limiting teeth 324 are adjacent to the hinge column 313.

[0075] Preferably, the upper surface of the rocker arm 331 adjacent to one end of the hinge post 313 is provided with two symmetrically distributed arcuate grooves 3311. A symmetrically distributed cylinder is fixed in each of the arcuate grooves 3311. The locking blocks 332 are hinged to the cylinders. To prevent the locking blocks 332 from falling off, a limit post is also fixed to the upper end of the cylinders. The two locking blocks 332 are also symmetrically distributed.

[0076] A pair of triangular teeth 3321 are fixed on the side wall of the locking block 332 , and the triangular teeth 3321 are distributed in a certain arc to facilitate fitting the limiting teeth 324 , and a spring piece 3322 is fixed on the other side of the locking block 332 , and the spring piece 3322 is inclined outward.

[0077] When the rocker arm 331 rotates in either direction and abuts against the stop teeth 324, the locking block 332 compresses the spring piece 3322, causing it to deform and the outer wall of the spring piece 3322 to abut against the wall of the arc-shaped groove 3311. Because the triangular teeth 3321 have the same shape as the stop teeth 324 and are arranged with an arc, the triangular teeth 3321 are fully inserted between the stop teeth 324, thus preventing the storage tube 32 from rotating.

[0078] Preferably, an inverted sleeve 3312 is fixed to the other end of the rocker arm 331, and a hollow column 3313 is fixed at the center of the bottom of the sleeve 3312. Two offset horizontal grooves 3314 are opened on the side wall of the hollow column 3313, and the horizontal grooves 3314 are consistent in shape and size.

[0079] The trigger post 333 completely penetrates the sleeve 3312 and is inserted into the hollow column 3313, allowing it to move axially along the sleeve 3312. A through-going oblique slot 3332 is defined on the outer wall of the trigger post 333 near its lower end. The two notches of the oblique slot 3332 point toward the two offset horizontal slots 3314. A mounting post 3331 is also secured to the top of the trigger post 333.

[0080] The outer wall of the locking cylinder 334 is tightly attached to the inner wall of the sleeve 3312 and can move axially along the sleeve 3312. The opening of the locking cylinder 334 faces upward, and an inward-facing annular slope 3341 is provided on the inner wall of the opening of the locking cylinder 334. The annular slope 3341 is distributed circumferentially along the opening of the locking cylinder 334. In addition, the cross-section of the annular slope 3341 is triangular.

[0081] A crossbar 3351 is fixed to each end of the inclined rod 335, giving the inclined rod 335 a Z-shape. Note that the higher crossbar 3351 on the inclined rod 335 also has an inclined surface. The inclined rod 335 can be inserted into and moved within the inclined slot 3332. The two crossbars 3351 of the inclined rod 335 are inserted into the two offset horizontal slots 3314. When the trigger post 333 moves axially, the inclined rod 335 moves laterally to one of the corresponding sides.

[0082] Specifically, refer to Figure 10When the trigger post 333 moves downward, the inclined rod 335 moves horizontally to the right, and vice versa. The connection between the inclined rod 335 and the cross bar 3351 is stuck outside the horizontal groove 3314, so the travel of the inclined rod 335 is limited and it will not dislocate. Because the end of the elevated cross bar 3351 is also provided with an inclined surface, which can always contact the annular inclined surface 3341, the locking cylinder 334 will not fall. A spring 336 is also fixed between the bottom of the trigger post 333 and the bottom of the locking cylinder 334. Therefore, when the trigger post 333 moves downward, the inclined rod 335 moves horizontally to the right, while the locking cylinder 334 is then driven by the inclined surface. When the trigger post 333 is not under pressure, the spring 336 will cause the trigger post 333 to move upward and the locking cylinder 334 to move downward.

[0083] During use, when the shielding plate 21 is in the stored position, that is, rolled up and wrapped around the storage tube 32, the rocker arm 331 is in close contact with the limiting tooth 324, thereby preventing the storage tube 32 from rotating and thus preventing the shielding plate 21 from dispersing. The locking cylinder 334 should fall into the positioning hole 312 in the corresponding direction, and the rocker arm 331 will not move away from the storage tube 32. It should be noted that the positioning sleeve 242 is now sleeved on the outer wall of the mounting post 3331, and the connecting rod 24 is also restrained in the circular groove 234.

[0084] When deploying the guardrail, the operator aligns the limiting strip 241 with the straight slot 233 within the circular slot 234 and presses down on the connecting rod 24. This causes the trigger post 333 to move downward, while the locking cylinder 334 moves upward and leaves the positioning hole 312. The rocker arm 331 is then moved away from the limiting tooth 324 by the action of the deformable spring 3322, and the locking block 332 is released. It should be noted that the connecting rod 24 is still attached to the trigger post 333. Since the shielding panel 21 does not need to be wound very tightly, there is enough room for the rocker arm 331 to rotate. The connecting rod 24 is then lifted upward, and the shielding panel 21 can be deployed.

[0085] After unfolding to the desired length and arc, the rocker arm 331 is moved, allowing the locking cylinder 334 to pass through the inclined surface of its outer lower edge and extend into the positioning hole 312. The locking block 332 now locks the storage cylinder 32 again. At this point, the connecting rod 24 on the other guardrail can be inserted into the mounting post 3331 here, completing the connection between the two guardrails. The same process applies to the remaining guardrails.

[0086] When dismantling is required, the connecting rod 24 on the other guardrail needs to be pulled up, and then the mounting column 3331 is stepped on to make the rocker arm 331 pop open. At this time, the person can rotate the handle 323 and roll up the shielding plate 21 group.

[0087] When retracting, the rocker arm 331 is moved to allow the locking cylinder 334 to re-enter the positioning hole 312. At this time, the storage cylinder 32 is locked, and the shielding plate 21 set will not be dispersed. Finally, the connecting rod 24 on the guardrail is inserted into the mounting post 3331 and locked in the circular groove 234. At this time, the guardrail is stored and is in a state that it will not be loosened.

[0088] In summary, the present invention can significantly improve the storage efficiency of guardrails, reduce transportation and storage costs, increase the flexibility of laying, and reduce dependence on permanent guardrail installation; through flexible connections between guardrails, the buffering effect is enhanced, and the degree of harm caused by collisions between vehicles and guardrails in emergency situations is reduced; in addition, the guardrail adopts a rollable design, and the road layout can be quickly adjusted as needed; importantly, the guardrail has an integrated noise reduction function, and the installation of barrier 11 is also very convenient.

[0089] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A road noise reduction guardrail, characterized by: include, A noise reduction unit (1) comprises a barrier (11) and a plurality of fixing blocks (12) arranged on one side of a surface of the barrier (11); The storage unit (2) comprises a plurality of shielding plates (21), latches (22) arranged between the shielding plates (21), positioning plates (23) arranged at the ends of the shielding plates (21), and a connecting rod (24) passing through the center of the positioning plates (23); the noise reduction unit (1) is fixedly connected to the storage unit (2); The support unit (3) comprises a base (31), a storage cylinder (32) arranged on the outer wall of the base (31), and a locking assembly (33) arranged on one side of the storage cylinder (32); the other end of the storage unit (2) is connected to the storage cylinder (32) via the latch (22).

2. The road noise reduction guardrail according to claim 1, characterized in that: The barrier (11) includes a plurality of reflective bends (111) arranged on its surface; the barrier (11) is made of a high-strength and lightweight material; the surface of the barrier (11) is coated with an acoustic metamaterial; The fixing block (12) comprises engaging grooves (121) arranged at both ends thereof.

3. The road noise reduction guardrail according to claim 1 or 2, characterized in that: The shielding plate (21) comprises a first engaging groove (211) provided on one side thereof, and a first engaging block (212) provided on the other side of the shielding plate (21); The positioning plate (23) comprises a second engaging block (231) arranged on one side thereof, a receiving cavity (232) arranged inside the positioning plate (23), a straight groove (233) arranged on the inner wall of the receiving cavity (232), and a circular groove (234) arranged on the inner wall of the receiving cavity (232).

4. The road noise reduction guardrail according to claim 3, characterized in that: The connecting rod (24) comprises limiting strips (241) arranged on both sides thereof, and a positioning sleeve (242) arranged at the bottom of the connecting rod (24).

5. The road noise reduction guardrail according to claim 4, characterized in that: The base (31) comprises a column (311) provided on its upper surface, positioning holes (312) provided on both sides of the base (31), and a hinge column (313) provided on one side of the column; The storage tube (32) comprises a connecting column (321) provided on one side thereof, a second engaging groove (322) provided on one side of the connecting column (321), a handle (323) provided above the outer wall of the storage tube (32), and a plurality of limiting teeth (324) provided below the outer wall of the storage tube (32).

6. The road noise reduction guardrail according to claim 5, characterized in that: The locking assembly (33) includes a rocker arm (331), a pair of locking blocks (332) arranged on the upper surface of the rocker arm (331), a trigger column (333) arranged at the end of the rocker arm (331), a locking cylinder (334) arranged at the bottom of the trigger column (333), an inclined rod (335) arranged between the trigger column (333) and the locking cylinder (334), and a spring (336) arranged between the trigger column (333) and the locking cylinder (334).

7. The road noise reduction guardrail according to claim 6, characterized in that: The rocker arm (331) includes arcuate grooves (3311) provided on both sides of its surface, a sleeve (3312) provided at the end of the rocker arm (331), a hollow column (3313) provided at the inner center of the sleeve (3312), and a pair of horizontal grooves (3314) provided through the side walls of the hollow column (3313).

8. The road noise reduction guardrail according to claim 7, characterized in that: The locking block (332) comprises a plurality of triangular teeth (3321) arranged on a side wall thereof, and a spring piece (3322) arranged on another side wall of the locking block (332).

9. The road noise reduction guardrail according to claim 8, characterized in that: The trigger column (333) includes a mounting column (3331) provided on the top thereof, and an inclined groove (3332) extending through the outer wall of the trigger column (333); The locking cylinder (334) includes an annular inclined surface (3341) provided on the inner wall of its opening; The oblique rod (335) includes horizontal rods (3351) arranged at both ends thereof.

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