Sound barrier for road

Abstract

The utility model discloses a road sound barrier which comprises a plurality of barrier units connected in sequence, each barrier unit comprises two adjacent columns, a baffle and a shock pad, every two adjacent barrier units share one column to be connected, the baffle is embedded between every two adjacent columns, one side of the shock pad abuts against the back face of the baffle, and the other side of the shock pad abuts against the back face of the baffle. The baffle comprises a first sound insulation board, a second sound insulation board, a first sound absorption board and a second sound absorption board which are sequentially connected in a clamped mode from bottom to top, a first included angle is formed between the second sound absorption board and the first sound absorption board, and the angle range of the first included angle is larger than 90 degrees and smaller than 180 degrees. The utility model has the advantages of reasonable structural arrangement, simple installation, low processing cost, good stability, good safety and good sound insulation and absorption effect, and has stronger wind pressure resistance, and when the wind pressure is + / -5.0 kPa, the maximum deflection is less than or equal to 7.2 mm, and the maximum residual deformation is less than or equal to 1mm.

Description

Technical Field

[0001] The utility model relates to the technical field of noise control, in particular to a road sound barrier. Background Art

[0002] Sound barriers, also known as sound insulation screens or noise barriers, are mainly divided into road sound barriers, equipment noise attenuation sound barriers and industrial plant noise sound barriers. Among them, road sound barriers are wall structures set up on both sides of the road to reduce the impact of traffic noise on nearby residents.

[0003] Patent application number: 202020344505.0, named as a utility model patent document of a sound barrier for roads and bridges, discloses a barrier, including a barrier, a hexagonal shell, a rotating rod, a threaded rod and a locking rod; a bearing is arranged on the top of the barrier, and two groups of bearings are arranged, the inside of the bearing is connected with a hexagonal shell, the bottom of the hexagonal shell is located inside the barrier, a rotating rod is arranged inside the barrier, the bottom of the hexagonal shell is arranged with a first conical tooth, and the middle of the rotating rod is arranged with a second conical tooth; threaded rods are fixed at both ends of the rotating rod, and the threaded rod is located inside the thread groove, the thread groove is opened on one side of the locking rod, and rod grooves are opened on both sides of the barrier, the locking rod is located inside the rod groove, the end of the locking rod is plugged into the inside of the locking groove, and the locking groove is opened on the inner wall of the barrier shell. However, the barrier has the problems of complex structure, high processing difficulty, high processing cost and complex installation method. In order to solve the above problems, it is necessary to develop a new type of road sound barrier. Utility Model Content

[0004] The utility model aims to provide a road sound barrier.

[0005] According to one aspect of the utility model, a road sound barrier is provided, comprising a plurality of barrier units connected in sequence, the barrier unit comprising two adjacent columns, a baffle and a shock-absorbing pad, two adjacent barrier units are connected by sharing a common column, the baffle is embedded between two adjacent columns, one side of the shock-absorbing pad abuts against the back of the baffle, and the other side abuts against the column, the baffle comprises a first sound insulation board, a second sound insulation board, a first sound absorbing board and a second sound absorbing board which are sequentially clamped from bottom to top, a first angle is provided between the second sound absorbing board and the first sound absorbing board, and the angle range of the first angle is greater than 90° and less than 180°. Two adjacent columns are used to fix and support the baffle, and the shock-absorbing pad is used to perform shock-absorbing treatment on the column and the baffle. The first sound insulation board and the second sound insulation board are used to block the noise emitted by vehicles traveling on the road. The weighted sound insulation of the first sound insulation board and the second sound insulation board is ≥26dB. The first sound absorbing board and the second sound absorbing board are used to absorb noise, and the noise reduction coefficient of the first sound absorbing board and the second sound absorbing board is ≥0.8.

[0006] In some embodiments, the angle is 156 degrees. The angle between the second sound absorbing panel and the first sound absorbing panel is 156 degrees, so that the second sound absorbing panel is tilted to a certain extent, increasing the contact area between the second sound absorbing panel and the vertical noise, and improving the sound absorption effect.

[0007] In some embodiments, the first sound insulation board and the second sound insulation board have the same structure, the first sound insulation board includes a first panel, a first back panel, a first keel and a first core material, the first keel is fixedly connected using an angle code, the first core material is embedded in the first keel, the first panel is fixedly connected to the front of the first keel, the first back panel is fixedly connected to the back of the first keel, the first keel includes a first top keel and a first bottom keel, the first top keel is installed on the top of the first core material, and the first bottom keel is located at the bottom of the first core material.

[0008] In some embodiments, the first sound absorbing panel and the second sound absorbing panel have the same structure, the first sound absorbing panel includes a second back panel, a second panel, a second keel and a second core material, the second keel is fixedly connected using an angle code, the second core material is embedded in the second keel, the second keel includes a second top keel and a second bottom keel, the second top keel is installed on the top of the second core material, the second bottom keel is located at the bottom of the second core material, the second panel is fixedly connected to the front of the second keel, the second back panel is fixedly connected to the back of the second keel, and the second panel is provided with a louver-type through hole.

[0009] In some embodiments, the first top keel and the second top keel have the same structure and are both provided with protrusions, the first bottom keel and the second bottom keel have the same structure and are both provided with grooves, the positions and shapes of the protrusions correspond to the grooves, and the upper and lower adjacent grooves are snap-connected with the protrusions.

[0010] In some embodiments, the barrier unit also includes a rear cover plate, which is clamped between the second sound absorbing panel and the first sound absorbing panel, and the rear cover plate is provided with a hanging arm, a support arm and a bending arm, and the two ends of the support arm are respectively integrally connected with the hanging arm and the bending arm, and the hanging arm is clamped on the groove of the second bottom keel of the second sound absorbing panel, and the bending arm is abutted against the second top keel of the first sound absorbing panel.

[0011] In some embodiments, the thickness of the first panel and the second panel are both 0.5 mm, and the material is zinc-aluminum-magnesium plate. The thickness of the first back plate and the second back plate are both 0.4 mm, and the material is color steel plate. The material of the first keel and the second keel is 1.0 mm thick galvanized steel plate.

[0012] In some embodiments, the first core material is the same as the second core material, both are recycled fiber honeycomb cores, both have a thickness of 79 mm, a side length of 10 mm, a fire resistance grade of B1, a water absorption rate of ≤5%, and a peel strength of ≥40.

[0013] In some embodiments, a coating is provided on the surface of the first panel and the second panel, the thickness of the coating is not less than 40 μm, and the coating is off-white.

[0014] In some embodiments, the column is provided with a bending portion and a main body, a second angle is provided between the bending portion and the main body, the angle of the second angle is the same as the angle of the first angle, the second sound absorbing board is embedded in the bending portion, and the column is an H-shaped steel column. The bending portion is provided to facilitate the installation of the second sound absorbing board and improve the noise reduction and sound absorption effect.

[0015] The beneficial effects of the utility model: the utility model has the advantages of reasonable structure, simple installation, low processing cost, good stability, good safety, good sound insulation and sound absorption effect, and strong wind pressure resistance. When the wind pressure is ±5.0kPa, the maximum deflection is less than or equal to 7.2mm, and the maximum residual deformation is less than or equal to 1mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of a road sound barrier according to an embodiment of the present invention.

[0017] Figure 2 The present invention is a front view of a barrier unit of a road sound barrier according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic structural diagram of a first sound insulation board of a road sound barrier in one embodiment of the utility model.

[0019] Figure 4 This is a schematic structural diagram of a first sound absorbing board of a road sound barrier in one embodiment of the utility model.

[0020] Figure 5 The present invention is a schematic structural diagram of a column of a road sound barrier according to an embodiment of the present invention.

[0021] Figure 6 for Figure 1 A partial enlarged view of part C.

[0022] Figure 7 for Figure 1 A partial enlarged view of part D.

[0023] Figure 8 for Figure 1 A partial enlarged view of part E in the middle.

[0024] Fig. 9 The present invention is a schematic structural diagram of a rear cover plate of a road sound barrier according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the embodiments.

[0026] refer to Figures 1 to 9 The utility model provides a road sound barrier, comprising a plurality of barrier units connected in sequence, wherein two adjacent barrier units are connected by sharing a column 1.

[0027] The barrier unit includes two adjacent columns 1, a baffle 2, a plurality of shock-absorbing pads 3 and a rear cover 5. The plurality of shock-absorbing pads 3 are located between the back of the baffle 2 and the column 1, one side of the shock-absorbing pad 3 is against the back of the baffle 2, and the other side is against the column 1. The column 1 is provided with a bending portion 11 and a main body 12, and a second angle A is provided between the bending portion 11 and the main body 12, and the angle of the second angle A is the same as the angle of the first angle B, both of which are 156°. The second sound absorbing panel 24 is embedded in the bending portion 11. The column 1 is an H-shaped steel column. The shock-absorbing pad 3 is a PU shock-absorbing pad with a thickness of 30 mm.

[0028] The baffle 2 includes a first sound insulation board 21, a second sound insulation board 22, a first sound absorbing board 23 and a second sound absorbing board 24. The first sound insulation board 21, the second sound insulation board 22, the first sound absorbing board 23 and the second sound absorbing board 24 are all embedded between two adjacent columns 1. The first sound insulation board 21, the second sound insulation board 22, the first sound absorbing board 23, the rear cover 5 and the second sound absorbing board 24 are sequentially clamped and connected from bottom to top. A first angle B is set between the second sound absorbing board 24 and the first sound absorbing board 23, and the angle of the first angle B is 156°.

[0029] The first sound insulation board 21 and the second sound insulation board 22 have the same structure. The first sound insulation board 21 includes a first panel 216, a first back panel, a first keel and a first core material 213. The first keel includes a first top keel 211 and a first bottom keel 212. The first top keel 211 is fixedly connected to the top surface of the first keel, and the first bottom keel 212 is fixedly connected to the bottom surface of the first keel. The first core material 213 is embedded in the first keel. The first top keel 211 is located at the top of the first core material 213, and the first bottom keel 212 is located at the bottom of the first core material 213. The first panel 216 is fixedly connected to the front of the first keel, and the first back panel is fixedly connected to the back of the first keel. The four corners of the first keel are fixedly connected using angle brackets.

[0030] The thickness of the first panel 216 is 0.5 mm, and its material is zinc-aluminum-magnesium plate. The thickness of the first back plate is 0.4 mm, and its material is color steel plate. The material of the keel is 1.0 mm thick galvanized steel plate.

[0031] The first sound absorbing panel 23 and the second sound absorbing panel 24 have the same structure, both of which are louver-type sound absorbing panels. The first sound absorbing panel 23 includes a second keel, a second back plate, a second panel 233, and a second core material 234. The second keel includes a second top keel 231 and a second bottom keel 232. The second core material 234 is embedded in the second keel, the second top keel 231 is fixedly connected to the top of the second core material 234, and the second bottom keel 232 is fixedly connected to the bottom of the second core material 234. The second back plate is fixedly connected to the back of the second core material 234, and the second panel 233 is fixedly connected to the front of the second core material 234. The second panel 233 is provided with a louver-type through hole 235. The four corners of the second keel are fixedly connected using angle brackets.

[0032] The first top keel 211 and the second top keel 231 have the same structure and are both provided with a protrusion 214. The first bottom keel 212 and the second bottom keel 232 have the same structure and are both provided with a groove 215. The positions and shapes of the protrusions 214 and the grooves 215 correspond to each other, and the upper and lower adjacent protrusions 214 and grooves 215 are snap-connected.

[0033] The rear cover plate 5 is provided with a hanging arm 51, a supporting arm 52 and a bending arm 53, and the two ends of the supporting arm 52 are respectively connected to the hanging arm 51 and the bending arm 53. The hanging arm 51 is clamped on the groove 215 of the second bottom keel 232 of the second sound absorbing panel 24, and the bending arm 53 is in contact with the second top keel 231 of the first sound absorbing panel 23. The rear cover plate 5 provides a certain angle of support force to the second sound absorbing panel 24, so that the second sound absorbing panel 24 can maintain an angle of 156 degrees with the first sound absorbing panel 23.

[0034] The first core material 213 and the second core material 234 are both recycled fiber honeycomb cores, with a thickness of 79 mm and a side length of 10 mm. The fire resistance grade is B1, the water absorption rate is ≤5%, and the peel strength is ≥40.

[0035] The surfaces of the first panel 216 and the second panel 233 are both provided with a coating, the thickness of the coating is not less than 40 μm, and the coating is off-white.

[0036] When installing the utility model, a plurality of pillars 1 are first fixedly installed in sequence on one side of the road where noise needs to be shielded, and the left and right ends of the first sound insulation board 21 are embedded in the main body 12 between two adjacent pillars 1, and the first bottom keel 212 of the first sound insulation board 21 is in contact with the bottom of the main body 12. The second sound insulation board 22 is located above the first sound insulation board 21, and the protrusion 214 of the first top keel 211 of the first sound insulation board 21 is clamped in the groove 215 of the first bottom keel 212 of the second sound insulation board 22, so that the second sound insulation board 22 is clamped and connected with the first sound insulation board 21. The first sound absorption board 23 is located above the second sound insulation board 22, and the protrusion 214 of the first top keel 211 of the second sound insulation board 22 is clamped in the groove 215 of the second bottom keel 232 of the first sound absorption board 23, so that the first sound absorption board 23 is clamped and connected with the second sound insulation board 22.

[0037] The second sound absorbing panel 24 is embedded in the bending portion 12, and the rear cover 5 is clamped between the first sound absorbing panel 23 and the second sound absorbing panel 24, so that the bending arm 53 abuts against the second top keel 231 of the first sound absorbing panel 23, and the hanging arm 51 is clamped in the groove 215 of the second bottom keel 232 of the second sound absorbing panel 24. The rear cover 5 is used to support the second sound absorbing panel 24, so as to maintain the first angle A between the second sound absorbing panel 24 and the first sound absorbing panel 23 at 156°. The second panels 233 of the first sound absorbing panel 23 and the second sound absorbing panel 24 both face the road, and the louvered through holes 235 face the road to better absorb the noise emitted by vehicles traveling on the road.

[0038] After the baffle 2 is embedded in the column 1, a plurality of shock-absorbing pads 3 are embedded between the first sound insulation board 21, the second sound insulation board 22, the first sound absorbing board 23 and the second sound absorbing board 24 and the column 1 to fill the gap between the baffle 2 and the column 1, reduce the vibration of the baffle 2 in the column 1, and maintain stability.

[0039] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A road sound barrier, characterized in that: The invention comprises a plurality of barrier units connected in sequence, wherein the barrier units comprise two adjacent columns, a baffle and a shock-absorbing pad, wherein two adjacent barrier units are connected by sharing one column, wherein the baffle is embedded between two adjacent columns, wherein one side of the shock-absorbing pad abuts against the back of the barrier baffle, and the other side abuts against the column, wherein the baffle comprises a first sound insulation board, a second sound insulation board, a first sound absorbing board and a second sound absorbing board which are sequentially connected from bottom to top, wherein a first angle is provided between the second sound absorbing board and the first sound absorbing board, and the angle range of the first angle is greater than 90 ° and less than 180°, the first sound insulation board and the second sound insulation board have the same structure, the first sound insulation board includes a first panel, a first back panel, a first keel and a first core material, the first keel is fixedly connected by using an angle code, the first core material is embedded in the first keel, the first panel is fixedly connected to the front of the first keel, the first back panel is fixedly connected to the back of the first keel, the first keel includes a first top keel and a first bottom keel, the first top keel is installed on the top of the first core material, and the first bottom keel is located at the bottom of the first core material.

2. A road sound barrier according to claim 1, characterized in that: The first angle is 156°.

3. A road sound barrier according to claim 1, characterized in that: The first sound-absorbing panel and the second sound-absorbing panel have the same structure. The first sound-absorbing panel includes a second back plate, a second panel, a second keel and a second core material. The second keel is fixedly connected using an angle code. The second core material is embedded in the second keel. The second keel includes a second top keel and a second bottom keel. The second top keel is installed on the top of the second core material, and the second bottom keel is located at the bottom of the second core material. The second panel is fixedly connected to the front of the second keel, and the second back plate is fixedly connected to the back of the second keel. The second panel is provided with a louver-type through hole.

4. A road sound barrier according to claim 3, characterized in that: The first top keel and the second top keel have the same structure and are both provided with protrusions. The first bottom keel and the second bottom keel have the same structure and are both provided with grooves. The positions and shapes of the protrusions correspond to the grooves, and the upper and lower adjacent grooves are snap-connected with the protrusions.

5. A road sound barrier according to claim 4, characterized in that: The barrier unit also includes a rear cover plate, which is clamped between the second sound-absorbing panel and the first sound-absorbing panel. The rear cover plate is provided with a hanging arm, a supporting arm and a bending arm. The two ends of the supporting arm are respectively connected integrally with the hanging arm and the bending arm. The hanging arm is clamped on the groove of the second bottom keel of the second sound-absorbing panel, and the bending arm is abutted against the second top keel of the first sound-absorbing panel.

6. A road sound barrier according to claim 3, characterized in that: The thickness of the first panel and the second panel are both 0.5 mm, and the material is zinc-aluminum-magnesium plate. The thickness of the first back plate and the second back plate are both 0.4 mm, and the material is color steel plate. The material of the first keel and the second keel is 1.0 mm thick galvanized steel plate.

7. A road sound barrier according to claim 3, characterized in that: The first core material is the same as the second core material, both are recycled fiber honeycomb cores, both have a thickness of 79 mm, a side length of 10 mm, a fire resistance grade of B1, a water absorption rate of ≤5%, and a peel strength of ≥40.

8. A road sound barrier according to claim 3, characterized in that: The surfaces of the first panel and the second panel are both provided with a coating, the thickness of the coating is not less than 40 μm, and the coating is off-white.

9. A road sound barrier according to claim 1, characterized in that: The column is provided with a bending portion and a main body, a second angle is provided between the bending portion and the main body, the angle of the second angle is the same as the angle of the first angle, the second sound absorbing panel is embedded in the bending portion, and the column is an H-shaped steel column.

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