A kind of noise barrier
Technical field
The utility model relates to a kind of noise barrier, relates in particular to a kind of simple in structure, assembling easy construction, the better noise barrier of soundproof effect.
Background technology
In some cities, speedway, railway are by dense population areas such as residential block, schools, automobile or train have produced noise, surrounding environment has been produced noise pollution, in order to reduce the pollution to surrounding environment of noise that vehicle or train produce, general highway or railway limit are provided with the noise barrier that is used for isolated noise, but existing noise barrier structure is generally the body structure that cold-reduced sheet is made, be filled with damping material in the casing, casing has the end socket shutoff in two ends up and down.But the noise barrier of this structure, owing to will fill damping material in inside when producing, complex process trouble is installed, and manufacturing cost is also than higher.As publication number is CN101177935A, name is called the Chinese utility model patent of vacuum sound insulation board of plastic, its structure is: the sound insulation panel in the inner space of sound insulating panel is arranged on the centre position between front panel and the rear board, be formed with the fixedly planar projection of usefulness of a plurality of damping materials between sound insulation panel and the front panel, sound insulation panel and damping material fixedly insert the one-piece type sound-absorbing material with certain-length between the planar projection of usefulness.This noise barrier just has above-mentioned shortcoming: complex process, trouble is installed.
Summary of the invention
The problem that the utility model has mainly solved general noise barrier manufacturing process complexity, trouble is installed, manufacturing cost is high provides a kind of simple in structure, assembling easy construction, cost is low, soundproof effect is good noise barrier.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of noise barrier, comprise two I-shaped columns and some sound insulating panels, described sound insulating panel is superimposed with each other and is arranged between two columns, the two ends of sound insulating panel are stuck in the groove of column side, some sound insulations chamber and silencing cavity have been separated to form in the described sound insulating panel, described silencing cavity is provided with opening on the sound insulating panel one side, the top edge of opening is provided with baffle plate.Sound insulating panel is extruded by the plastic material uniform section, the production efficiency height, and defect rate is low.This sound insulating panel can be for monochromatic, double-colored, three looks etc., make outward appearance more attractive in appearance, and noise barrier is constituted by the polylith sound insulating panel, and the assembling easy construction has also made things convenient for transportation and storage simultaneously.This noise barrier is provided with sound-absorbing opening and silencing cavity, external noise imports silencing cavity into by the sound-absorbing opening, sound wave shakes on each reflecting surface of silencing cavity repeatedly, and then decay gradually, can eliminate most of noise in this stage, the baffle plate retaining that opening is provided with returns acoustic reflection in the silencing cavity on opening, improves erasure effect.Remaining part noise continues to propagate forward, by several layers sound insulation chamber the time, utilizes sound wave to propagate in different densities, the characteristic of rapid decay, the noise of further having decayed.This noise barrier is compared the more effective propagation that intercepts noise of common noise barrier, has guaranteed the peace and quiet of resident's environment.
As a kind of preferred version, described opening is provided with along the sound insulating panel length direction, is parallel to each other the downward-sloping setting of described baffle plate between the opening.Opening makes the easier silencing cavity that enters of sound wave, the downward-sloping setting of baffle plate, and retaining has blocked sound wave to external reflectance in opening the place ahead, has improved erasure effect.
As a kind of preferred version, the setting that slopes inwardly of the lower limb of described opening.The opening lower limb slopes inwardly and makes sound wave can enter silencing cavity easily, but is difficult for going out from the silencing cavity internal reflection.
As a kind of preferred version, be provided with two-layer sound insulation chamber in the described sound insulating panel, the volume in the sound insulation chamber of one deck will be positioned at the volume in the sound insulation chamber of outside one deck greatly in the middle of wherein being positioned at.The sound wave of having decayed more effectively.
As a kind of preferred version, being shaped as of described sound insulation chamber and silencing cavity is square, triangle or circle.
As a kind of preferred version, the sound insulating panel upper end is provided with detent/locating convex block, and the sound insulating panel lower end is provided with corresponding locating convex block/detent.When two sound insulating panels were superimposed, the locating convex block of the sound insulating panel lower end of lastblock was inserted into the detent of next piece sound insulating panel, has played positioning action, made that the sound insulating panel after installing is difficult for rocking, and also made easier for installation in addition.
As a kind of preferred version, described column lateral grooves is provided with locking bolt, and described locking bolt is transverse in the groove.Locking bolt is used for preventing that sound insulating panel is loosening or drops out.
As a kind of preferred version, described column top is skewed or arc shape, and the sound insulating panel that is arranged between the column top is corresponding skewed or arc shape.The various appearances effect can be produced after making noise barrier assemble, better soundproof effect can be played simultaneously.
As a kind of preferred version, in described column and seam between sound insulating panel matches, evenly be pasted with sealing rubber strip.It is more fastening that sound insulating panel is connected with column, also improved soundproof effect simultaneously.
The utility model has the advantages that: simple in structure, the manufacturing is convenient, production efficiency is very high.Has good sound insulation value.And be easy to construction and installation, required technical requirements is low, is easy to promote, and practicality is stronger.Plastic-steel section bar density is big, and is anti-aging, adapts to special local uses such as burning sun is exposed to the sun, humidity.Plastic-steel section bar is recyclable to be utilized again, meets the basic demand of future architecture.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is a kind of structural representation of sound insulating panel in the utility model;
Fig. 3 is the another kind of structural representation of sound insulating panel in the utility model;
Fig. 4 is a kind of side-looking structure sectional view of the present utility model;
Fig. 5 is an another kind of side-looking structure sectional view of the present utility model.
The specific embodiment:
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is further described.
Embodiment:
A kind of noise barrier of present embodiment as shown in Figure 1, comprises the column 1 of two I shapes, and these column both sides have the groove that inserts for object, are provided with installation along 3 in the bottom of column, installs along being provided with bolt, and column is fixed on the ground.Be inserted with sound insulating panel 2 between two columns, sound insulating panel has polylith, evenly is pasted with sealing rubber strip in the mutual superposition up and down, column 1 and seam between sound insulating panel 2 matches.As shown in Figure 2, this sound insulating panel is the plastics steel plate of a uniform section, be separated into three layers in sound insulating panel inside by dividing plate, silencing cavity layer and the two-layer sound insulation chamber layer that by sound insulation chamber 9 constitute of one deck for constituting by a plurality of silencing cavity 5, the silencing cavity laminating on the front of sound insulating panel, each silencing cavity has opening 6 on the front of sound insulating panel, this opening extends along the sound insulating panel length direction, opening is parallel to each other, the top edge of opening is provided with a baffle plate 7 with the sound insulating panel one, the downward-sloping setting of this baffle plate, retaining is put in opening the place ahead.The lower limb 8 of opening is obliquely installed in mutually.Two-layer sound insulation chamber layer is positioned at the sound insulating panel middle part for one deck, and another laminating the sound insulating panel back, and the volume that wherein is positioned at the sound insulation chamber of mid portion is greater than and is positioned at the volume that the sound insulation chamber of sound insulating panel back is promptly being pasted in the outside.In the present embodiment silencing cavity and sound insulation chamber be shaped as squarely, as required, also silencing cavity and sound insulation cavity shape can be arranged to circle, as shown in Figure 3, perhaps other shapes such as triangle.The upper end of sound insulating panel is provided with the detent 10 that is provided with along its length, and the lower end of sound insulating panel is provided with and the corresponding locating convex block 11 of detent, and when two sound insulating panels were superimposed, locating convex block was inserted in the detent.As shown in Figure 1, stake pocket upper end is provided with locking bolt, and locking bolt passes across groove, and after sound insulating panel installed, locking bolt was through on the groove, and sound insulating panel is pinned, and prevents that sound insulating panel is loosening or drops out.Can produce the various appearances effect for after making noise barrier assemble, simultaneously can play better soundproof effect, as shown in Figure 4 and Figure 5, column 1 top is arranged to skewed or arc shape, and the sound insulating panel that is inserted between the column top also is arranged to corresponding skewed or arc shape.
When noise barrier is installed, earlier required column is fixed to nut on the equidistant bolt of reservation, each sound insulating panel is inserted into the column from the column upper end, the top is fixed with locking bolt, evenly pastes sealing rubber strip at the seam crossing that column cooperates with sound insulating panel.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as sound insulating panel, column, opening, baffle plate, silencing cavity morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.