CN204805762U - Noise elimination pipeline and sweeping machine - Google Patents
Noise elimination pipeline and sweeping machine Download PDFInfo
- Publication number
- CN204805762U CN204805762U CN201520418894.6U CN201520418894U CN204805762U CN 204805762 U CN204805762 U CN 204805762U CN 201520418894 U CN201520418894 U CN 201520418894U CN 204805762 U CN204805762 U CN 204805762U
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- Prior art keywords
- noise elimination
- noise
- layer
- elimination pipeline
- silencing plate
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Abstract
The utility model discloses a noise elimination pipeline and sweeping machine. The noise elimination pipeline includes a plurality of pipes layer, a plurality of pipes layer is including supporting layer, eliminate the noise layer and sound insulating layer, the supporting layer set up in a plurality of the the most inboard of layer of managing, eliminate the noise the layer support in the supporting layer periphery, the sound insulating layer sets up the periphery on noise elimination layer. According to the utility model discloses a noise elimination pipeline, because the setting of supporting layer, the intensity of the pipeline of can guaranteeing to eliminate the noise has stronger anti static pressure ability, the setting on layer owing to eliminate the noise, the pipeline of should eliminating the noise can reduce the noise of the fluid flow path of applied this noise elimination pipeline effectively, because the setting of sound insulating layer can be avoided the fluid flow path to locate to produce the noise at the noise elimination pipeline and reveal, and can protect the layer of eliminating the noise to avoid the external environment pollution. This noise elimination pipeline can prevent the fan noise to locate to produce the leakage at the connecting tube as the connecting tube of sweeping machine effectively to effectively reduce the noise level of the whole car of air conveying system and sweeping machine.
Description
Technical field
The utility model relates to environmental sanitation mechanical field, particularly one noise elimination pipeline and sweeping machine.
Background technique
In environmental sanitation mechanical field, sweeping machine, with the variation of the high efficiency of its cleaning works and function, is the service such as city, expressway of various places widely.But noise problem during sweeping machine operation also receives the concern of people day by day.
One of Main Noise Sources when fan noise is sweeping machine work is that the interaction such as aerodynamic noise, mechanical noise produces.Fan outlet noise enters air channel part, connecting tube, sucker etc. successively, very easily produces in above-mentioned parts or joint and leaks, if will cause noise pollution to surrounding environment to fan noise is not treated.
In order to reduce fan noise, avoid occurring the problem of noise leakage, needing disappears to insulate against sound to the component of air-transport system designs, and reduces the total noise of centrifuge of sweeping machine.
In prior art, sweeping machine uses following two kinds of connecting tubes usually: one is rubber tubing, rubber tubing not cracky and have certain sound insulation property; Another kind is flexible plastic tube, and comparatively conventional is flexiplastic bellows.
Realizing in process of the present utility model, inventor finds that above prior art has following deficiency: although two kinds of connecting tubes have certain sound insulation effect, but be difficult to effectively to stop fan noise to produce at connecting tube place leak, effectively can not reduce the noise level of air-transport system and car load, especially flexiplastic bellows is easily damaged and sound insulation property is poor when sweeping machine operation.
Model utility content
The purpose of this utility model is to provide a kind of noise elimination pipeline and sweeping machine, and this noise elimination pipeline effectively can reduce the noise of the fluid flowing path of this noise elimination pipeline of application on the basis that guarantee has stronger anti-static pressure ability.
The utility model first aspect provides a kind of noise elimination pipeline, described noise elimination pipeline comprises multiple tube layer, described multiple tube layer supporting layer, silencing plate and Sound insulating layer, described supporting layer is arranged at the inner side of described multiple tube layer, described silencing plate is supported in described supporting layer periphery, and described Sound insulating layer is arranged on the periphery of described silencing plate.
Further, described supporting layer is provided with Pierced structure.
Further, described Pierced structure comprises the multiple openings for transmitting the flow noise in described noise elimination pipeline to described silencing plate.
Further, described Pierced structure also comprises the multiple micropunch for reducing the flow noise in described noise elimination pipeline.
Further, in described multiple opening, the shape of at least two openings is different; And/or at least two openings varies in size in described multiple opening.
Further, described multiple opening comprises at least one group of strip gab, often organizing each strip gab in described strip gab is evenly arranged on described supporting layer around the axis of described noise elimination pipeline, and the shape often organizing each strip gab in described strip gab and length direction identical with size is along the axis of described noise elimination pipeline along stretching.
Further, described silencing plate comprises the sound absorption sublayer of being made up of sound-absorbing material.
Further, described silencing plate also comprises the water proof and dust proof sublayer be arranged between described sound absorption sublayer and described supporting layer.
Further, described noise elimination pipeline also comprises the first securing means be removably disposed in outside described silencing plate, and described first securing means is used for described silencing plate and each tube layer being positioned at described silencing plate inside to tighten together.
Further, described multiple tube layer also comprises innerliner, and wherein, described innerliner is arranged between the periphery of described silencing plate and the inner circumferential of described Sound insulating layer, or described innerliner is arranged between described supporting layer and described silencing plate.
Further, described noise elimination pipeline also comprises the second securing means be removably disposed in outside described Sound insulating layer, and described second securing means is used for described Sound insulating layer and each tube layer being positioned at described Sound insulating layer inside to tighten together.
The utility model second aspect provides a kind of sweeping machine, comprises sucker and is connected to the connecting tube on described sucker, wherein, and the noise elimination pipeline of described connecting tube according to any one of the utility model first aspect.
The noise elimination pipeline provided based on the utility model and sweeping machine, noise elimination pipeline comprises multiple tube layer, multiple tube layer comprises multiple tube layer, described multiple tube layer comprises supporting layer, silencing plate and Sound insulating layer, described supporting layer is arranged at the inner side of described multiple tube layer, described silencing plate is supported in described supporting layer periphery, and described Sound insulating layer is arranged on the periphery of described silencing plate.Due to the setting of supporting layer, the intensity of noise elimination pipeline can be ensured, there is stronger anti-static pressure ability; Due to the setting of silencing plate, this noise elimination pipeline can reduce the noise of the fluid flowing path of this noise elimination pipeline of application effectively; Due to the setting of Sound insulating layer, fluid flowing path can be avoided at noise elimination pipeline place to produce noise and to reveal, and silencing plate can be protected to avoid being subject to external environmental.This noise elimination pipeline can stop fan noise to produce leakage at connecting tube place as the connecting tube of sweeping machine effectively, and effectively reduces the noise level of air-transport system and sweeping machine car load.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, further feature of the present utility model and advantage thereof will become clear.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the sectional structure schematic diagram of the noise elimination pipeline of the utility model preferred embodiment.
Fig. 2 is the structural representation of the supporting layer of noise elimination pipeline embodiment illustrated in fig. 1.
Fig. 3 is the silencing plate of noise elimination pipeline embodiment illustrated in fig. 1 and the structural representation of adhesive tape.
Fig. 4 is the structural representation of the innerliner of noise elimination pipeline embodiment illustrated in fig. 1.
Fig. 5 is the Sound insulating layer of noise elimination pipeline embodiment illustrated in fig. 1 and the structural representation of Belt with clasp assembly.
Fig. 6 is the structural representation of the sweeping machine of the noise elimination pipeline with the utility model preferred embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Below with reference to Fig. 1 to Fig. 5, the noise elimination pipeline 100 of the utility model embodiment is described in detail.
Fig. 1 is the sectional structure schematic diagram of the noise elimination pipeline 100 of the utility model preferred embodiment.As shown in Figure 1, the noise elimination pipeline 100 of the present embodiment comprises multiple tube layer, and multiple tube layer mainly comprises supporting layer 110, silencing plate 120, innerliner 130 and Sound insulating layer 140.In addition, this noise elimination pipeline 100 also comprises the first securing means and the second securing means.
Fig. 2 is the structural representation of the supporting layer 110 of noise elimination pipeline 100 embodiment illustrated in fig. 1.As depicted in figs. 1 and 2, supporting layer 110 is positioned at the inner side of multiple tube layer of noise elimination pipeline 100.Silencing plate 120 is supported in the periphery of supporting layer 110.Supporting layer 110 pairs of hush tube roads 100 play a part to support and sizing.
Due to the setting of supporting layer 110, the intensity of noise elimination pipeline 100 can be ensured, make noise elimination pipeline 100 have stronger anti-static pressure ability; Due to the setting of silencing plate 120, this noise elimination pipeline 100 can reduce the noise of the fluid flowing path of this noise elimination pipeline 100 of application effectively.This noise elimination pipeline 100 is applicable to require certain anti-static pressure ability and need in the pipeline of noise elimination function, such as, be suitable for being applied on sweeping machine using as the connecting tube of sucker.
As depicted in figs. 1 and 2, preferably, supporting layer 110 is provided with Pierced structure.Because supporting layer 110 is provided with Pierced structure, therefore, the noise of noise elimination pipeline 100 inside can be passed to via supporting layer 110 silencing plate 120 be arranged at outside supporting layer 110, makes silencing plate 120 play the function of noise elimination noise reduction more fully, reduces the transmission of noise to downstream.
Wherein, Pierced structure mainly comprises the multiple openings 111 for transmitting the flow noise in noise elimination pipeline to silencing plate 120.Preferably, Pierced structure can also comprise the multiple micropunch 112 for reducing the flow noise in noise elimination pipeline.In multiple micropunch 112 of Pierced structure, the diameter of each micropunch 112 is preferably below 2mm.
Preferably, in multiple opening 111, the single opening area of each opening is greater than 25mm
2.In addition preferably, total opening area of multiple opening 111 accounts for 40% ~ 90% of the internal total surface area of noise elimination pipeline 100.
Above restriction is carried out to total opening area of multiple opening 111, the requirement of strength of supporting layer 110 can be taken into account preferably, noise transfer requires and noise attentuation requirement.
As depicted in figs. 1 and 2, multiple opening 111 comprises at least one group of strip gab, often organizing each strip gab in strip gab is evenly arranged on supporting layer 110 around the axis of noise elimination pipeline 100, the shape often organizing each strip gab in strip gab is identical with size, and length direction is stretched along the axis edge of noise elimination pipeline 100.
Opening shape is set to requirement of strength and noise transfer requirement that strip gab can take into account supporting layer 110 preferably.
Preferably, in multiple openings 111 of Pierced structure, the shape of at least two openings is different; And/or at least two openings varies in size in multiple opening 111.Such as, at least one group of strip gab of noise elimination pipeline 100 comprises the first group of strip gab and second group of strip gab that axially stagger, in first group of strip gab the width of strip gab be less than strip gab in second group of strip gab width and in first group of strip gab the quantity of strip gab be greater than the quantity of second group of strip gab discal patch opening.
Adopt openings of sizes or variform multiple opening, be conducive to the gross area as far as possible increasing opening while ensureing supporting layer rigidity.
It should be noted that, multiple opening also can be other shape such as circle, ellipse, polygonal; In addition, although the arrangement mode of multiple opening is regular in the present embodiment, in other embodiments, the arrangement mode of multiple opening also can be random, only otherwise the arrangement mode of the intensity of broken ring supporting layer 110 can adopt.Supporting layer 110 can by the metal of higher-strength or plastic monoblock shaping.In the present embodiment, its supporting layer 110 is made up of the Stainless Steel Tube that 3mm is thick, and the Pierced structure on Stainless Steel Tube comprises multiple opening 111 and multiple micropunch 112, and multiple opening 111 is divided into two of axially spaced-apart groups of strip gabs that size and number is different.
Fig. 3 is the silencing plate 120 of noise elimination pipeline 100 embodiment illustrated in fig. 1 and the structural representation of adhesive tape 150 (as the first securing means).
As shown in figures 1 and 3, in the present embodiment, silencing plate 120 comprises water proof and dust proof sublayer 121 and sound absorption sublayer 122.
Sound absorption sublayer 122 is made up of sound-absorbing material, and sound-absorbing material is preferably the strong acoustical cotton of sound absorbing capabilities or sound-absorbing fabric.Sound absorption sublayer 122 interacts with noise, has the function to noise elimination noise reduction.
Water proof and dust proof sublayer 121 is arranged between sound absorption sublayer 122 and supporting layer 110, plays waterproof and dustproof effect, prevents sound absorption sublayer 122 to be damaged.Preferably, water proof and dust proof sublayer 121 does not affect or the transmission of little effect noise, interacts with sound absorption sublayer 122 too much can not affect noise.Water proof and dust proof sublayer 121 can adopt the materials such as the aluminium foil of low sound insulation property, skinning to make.In the present embodiment, water proof and dust proof sublayer 121 and sound absorption sublayer 122 are made as integrative-structure.
First securing means is removably disposed in outside silencing plate 120, for being tightened together with the tube layer being positioned at silencing plate 120 inside by silencing plate 120.
Arrange the tube layer that dismountable first securing means can make silencing plate 120 can be positioned at silencing plate 120 inside with supporting layer 110 etc. to be fixed together easily, and can be separated easily, thus be convenient to maintenance and the maintenance of other tube layer of silencing plate 120 and inside thereof.
As shown in Figure 3, in the present embodiment, the first securing means is adhesive tape 150.Adhesive tape 150 can adopt the releasable securing apparatus of other forms such as elastic bands to substitute.
In the present embodiment, preferably, silencing plate 120 unassembled on supporting layer 110 before be rectangular lamella, during assembling noise elimination pipeline 100, rectangular lamella is closely wrapped on supporting layer 110, forms the silencing plate 120 of tubular, then be fixed on supporting layer 110 by adhesive tape 150.
The silencing plate 120 of the present embodiment selects the 3D polyester fibre sound-absorbing fabric of the thick about 20mm with aluminium foil facing, during assembling noise elimination pipeline 100, using aluminium foil facing as water proof and dust proof layer 121,3D polyester fibre sound-absorbing fabric as sound-absorption layer 122.This silencing plate 120 has that sound absorption qualities is high, water proof and dust proof and good long term stability.
Fig. 4 is the structural representation of the innerliner 130 of noise elimination pipeline 100 embodiment illustrated in fig. 1.
As shown in Figure 1 and Figure 4, in the present embodiment, innerliner 130 is arranged between the periphery of silencing plate 120 and the inner circumferential of Sound insulating layer 140.Innerliner 130 is for ensureing the tightness of noise elimination pipeline 100.
Innerliner 130 preferably adopts good thin of tightness to weave cotton cloth or flexiplastic is made.In the present embodiment, the high-quality plastics film that innerliner selects 1mm thick makes plastic sheath.When assembling noise elimination pipeline 100, after fixing silencing plate 120, directly plastic sheath is sleeved on the periphery of silencing plate 120.This innerliner 130 has tightness advantage that is good, not cracky.
In a unshowned embodiment, innerliner also can be arranged between supporting layer and silencing plate.Wherein, innerliner and silencing plate, supporting layer can be Split type structures, also can be made into integrative-structure.
Fig. 5 is the Sound insulating layer 140 of noise elimination pipeline 100 embodiment illustrated in fig. 1 and the structural representation of Belt with clasp assembly 160 (as the second securing means).
Sound insulating layer 140 is arranged on the periphery of silencing plate 120, plays the silencing plate 120 of parcel protection noise elimination pipeline 100, the effect of innerliner 130 and plays the effect reducing noise leakage.Sound insulating layer 140 can avoid fluid flowing path to produce noise leakage at noise elimination pipeline 100 place, and silencing plate 120 can be protected to avoid being subject to external environmental.
Sound insulating layer 140 adopts sound insulating material to make.Preferably, Sound insulating layer 150 adopts the flexible material with high sound insulation property to make, such as, can adopt to have certain thickness rubber material and make.In the present embodiment, the gum sleeve that namely Sound insulating layer 150 selects wall thickness to be about 8mm is made.
Second securing means is removably disposed in outside Sound insulating layer 140, and the second securing means is used for Sound insulating layer 140 to tighten together with the tube layer being positioned at Sound insulating layer 140 inside.
Dismountable second securing means is set, Sound insulating layer 140 can be made to be fixed together with these tube layer being positioned at Sound insulating layer 140 inside of supporting layer 110, silencing plate 120 and innerliner 130, and can be separated easily, be convenient to maintenance and the maintenance of other tube layer of Sound insulating layer 140 and inside thereof.Especially with the first securing means with the use of, silencing plate 120 can be disassembled easily, thus solve in care and maintenance process sound-absorbing material use for a long time after the defect of hydraulic performance decline, extend the working life of noise elimination pipeline 100.
As shown in Figure 1 and Figure 5, in the present embodiment, the second securing means is Belt with clasp assembly 160.Belt with clasp assembly 160 is preferably made up of rubber material.Belt with clasp assembly 160 is arranged on Sound insulating layer 140, and is integrally processed into Sound insulating layer 140.Belt with clasp assembly 160 comprises connecting band 161 and bracelet 162.Connecting band 161 and bracelet 162 are arranged at Sound insulating layer 140 sustained height place vertically respectively, but circumference is in diverse location.When needing fastening, connecting band 161 is inserted after mixing up degree of tightness in bracelet 162 and be buckled together.
Belt with clasp assembly 160 can be also other form, such as, can make waistband form, and the Belt with clasp assembly of waistband form can link together with Sound insulating layer 140, also independently can arrange with Sound insulating layer 140.
In other embodiments, Belt with clasp assembly 160 also can adopt the releasable securing apparatus of other forms such as pipe clamp to replace.
In the present embodiment, change at needs or when safeguarding silencing plate 120, only need to unload noise elimination pipeline 100, open Belt with clasp assembly 160, unload Sound insulating layer 140, open adhesive tape 150 again, just can easily unload silencing plate 120, maintaining is carried out to the sound absorption sublayer 122 of silencing plate 120.
Fig. 6 is the structural representation of the sweeping machine of the noise elimination pipeline 100 with the utility model preferred embodiment.As shown in Figure 6, the connecting tube that the sweeping machine that the present embodiment provides comprises sucker 200 and is connected with sucker 200, wherein, connecting tube is aforesaid noise elimination pipeline 100.
This noise elimination pipeline 100 mainly reduces the noise of fan outlet effectively as the connecting tube of sweeping machine because of the noise elimination effect of silencing plate 120, stop fan noise to produce at connecting tube place to leak, thus effectively reduce the noise level of air-transport system and sweeping machine car load.
Known according to above description, the above embodiment's tool of the utility model has the following advantages:
1, the structural design of noise elimination pipeline makes it effectively can reduce the noise of the fluid flowing path of this noise elimination pipeline of application on the basis with stronger anti-static pressure ability, is especially suitable for use as the connecting tube of sweeping machine.
2, in sweeping machine, adopt this noise elimination pipeline effectively can reduce the noise of fan outlet, stop fan noise to produce at connecting tube place and leak, thus effectively reduce the noise level of air-transport system and sweeping machine car load.
3, this noise elimination pipeline adopts Sound insulating layer that silencing plate can be made from the pollution of external environment, silencing plate is provided with water proof and dust proof sublayer, the sound absorption sublayer of silencing plate can be made from the impact of the moisture carried secretly in noise elimination pipeline internal flow and grit, and easy cleaning, thus there is the advantage of water proof and dust proof.
4, this noise elimination pipeline adopts dismountable structural design, the tube layer such as silencing plate can be disassembled easily and carry out maintaining, and the sound-absorbing material that can solve in silencing plate the sublayer that absorbs sound uses the problem of rear hydraulic performance decline for a long time.
5, the processing of this noise elimination pipeline simple, be easy to maintaining, extend the working life of noise elimination pipeline, reduce the user cost of product.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technological scheme scope of the utility model request protection.
Claims (12)
1. a noise elimination pipeline, it is characterized in that, described noise elimination pipeline comprises multiple tube layer, described multiple tube layer comprises supporting layer (110), silencing plate (120) and Sound insulating layer (140), described supporting layer (110) is arranged at the inner side of described multiple tube layer, described silencing plate (120) is supported in described supporting layer (110) periphery, and described Sound insulating layer (140) is arranged on the periphery of described silencing plate (120).
2. noise elimination pipeline according to claim 1, is characterized in that, described supporting layer (110) is provided with Pierced structure.
3. noise elimination pipeline according to claim 2, is characterized in that, described Pierced structure comprises the multiple openings (111) for transmitting the flow noise in described noise elimination pipeline to described silencing plate (120).
4. noise elimination pipeline according to claim 3, is characterized in that, described Pierced structure also comprises the multiple micropunch (112) for reducing the flow noise in described noise elimination pipeline.
5. noise elimination pipeline according to claim 3, is characterized in that, in described multiple opening (111), the shape of at least two openings is different; And/or at least two openings varies in size in described multiple opening (111).
6. noise elimination pipeline according to claim 3, it is characterized in that, described multiple opening comprises at least one group of strip gab, often organize each strip gab in described strip gab to be evenly arranged on described supporting layer (110) around the axis of described noise elimination pipeline, the shape often organizing each strip gab in described strip gab and length direction identical with size is along the axis of described noise elimination pipeline along stretching.
7. noise elimination pipeline according to claim 1, is characterized in that, described silencing plate (120) comprises the sound absorption sublayer (122) of being made up of sound-absorbing material.
8. noise elimination pipeline according to claim 7, it is characterized in that, described silencing plate (120) also comprises the water proof and dust proof sublayer (121) be arranged between described sound absorption sublayer (122) and described supporting layer (110).
9. noise elimination pipeline according to any one of claim 1 to 8, it is characterized in that, described noise elimination pipeline also comprises and is removably disposed in described silencing plate (120) the first securing means outward, and described first securing means is used for described silencing plate (120) and each tube layer of being positioned at described silencing plate (120) inside to tighten together.
10. noise elimination pipeline according to any one of claim 1 to 8, it is characterized in that, described multiple tube layer also comprises innerliner (130), wherein, described innerliner (130) is arranged between the periphery of described silencing plate (120) and the inner circumferential of described Sound insulating layer (140); Or described innerliner is arranged between described supporting layer and described silencing plate.
11. noise elimination pipelines according to any one of claim 1 to 8, it is characterized in that, described noise elimination pipeline also comprises and is removably disposed in described Sound insulating layer (140) the second securing means outward, and described second securing means is used for described Sound insulating layer (140) and each tube layer of being positioned at described Sound insulating layer (140) inside to tighten together.
12. 1 kinds of sweeping machines, the connecting tube comprising sucker (200) and be connected on described sucker (200), is characterized in that, described connecting tube is the noise elimination pipeline according to any one of claim 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520418894.6U CN204805762U (en) | 2015-06-17 | 2015-06-17 | Noise elimination pipeline and sweeping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520418894.6U CN204805762U (en) | 2015-06-17 | 2015-06-17 | Noise elimination pipeline and sweeping machine |
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| Publication Number | Publication Date |
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| CN204805762U true CN204805762U (en) | 2015-11-25 |
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| CN201520418894.6U Withdrawn - After Issue CN204805762U (en) | 2015-06-17 | 2015-06-17 | Noise elimination pipeline and sweeping machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587946A (en) * | 2015-06-17 | 2016-05-18 | 徐工集团工程机械股份有限公司 | Noise elimination pipeline and sweeping vehicle |
-
2015
- 2015-06-17 CN CN201520418894.6U patent/CN204805762U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587946A (en) * | 2015-06-17 | 2016-05-18 | 徐工集团工程机械股份有限公司 | Noise elimination pipeline and sweeping vehicle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151125 Effective date of abandoning: 20181016 |