CN204175383U - A kind of light-duty excavator silencing apparatus - Google Patents

A kind of light-duty excavator silencing apparatus Download PDF

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Publication number
CN204175383U
CN204175383U CN201420585050.6U CN201420585050U CN204175383U CN 204175383 U CN204175383 U CN 204175383U CN 201420585050 U CN201420585050 U CN 201420585050U CN 204175383 U CN204175383 U CN 204175383U
Authority
CN
China
Prior art keywords
cover
dividing plate
diffusing tube
partition
silencing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420585050.6U
Other languages
Chinese (zh)
Inventor
王春云
翟明超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHUCHENG HAIDEWEI MACHINE CO Ltd
Original Assignee
ZHUCHENG HAIDEWEI MACHINE CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHUCHENG HAIDEWEI MACHINE CO Ltd filed Critical ZHUCHENG HAIDEWEI MACHINE CO Ltd
Priority to CN201420585050.6U priority Critical patent/CN204175383U/en
Application granted granted Critical
Publication of CN204175383U publication Critical patent/CN204175383U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of light-duty excavator silencing apparatus, it is characterized in that, front cover and rear end cover is occluding with respectively at the two ends of shell, first dividing plate and second partition are by the internal layout of shell, intervalve is interspersed with respectively in the upper and lower of the first dividing plate and second partition, air inlet diffusing tube is located at the enclosure between front cover and the first dividing plate, and diffusing tube of giving vent to anger longitudinally is located between rear end cover and second partition.By above setting, the utility model maintains the effective advantage of resistance exhaust silencer centering, low frequency silencing noise, and air-flow is by repeatedly turning to and the repeatedly noise elimination of vent to high frequency and the sound absorption of sound-absorbing material, engine supercharger whistle is well eliminated, in actual entrucking uses, obtain good effect.

Description

A kind of light-duty excavator silencing apparatus
Technical field
The utility model belongs to engine exhaust muffler field, particularly relates to a kind of light-duty excavator silencing apparatus.
Background technique
At present, existing light-duty excavator engine exhaust muffler mainly adopts the resistance exhaust silencer structure of pipeline section expansion and cross-sectional constriction, utilize sound wave in the change of abrupt change of cross-section place due to acoustic reactance, some sound wave goes back to sound source reflects, and not by the outlet of silencing apparatus, thus reach the object of noise elimination.This resistance exhaust silencer centering, low-frequency silencing noise effect are better.And for high frequency noise, due to the perforation pipeline section good to high frequency noise soundproof effect of employing and the negligible amounts of perforated plate, and the inner resistive sound-absorbing material that layout is not good to high frequency noise acoustically effective, it is undesirable to the soundproof effect of high frequency noise.
Summary of the invention
The purpose of this utility model is to provide a kind of light-duty excavator silencing apparatus that especially high band soundproof effect is good in whole frequency range.
To achieve these goals, the utility model is occluding with front cover and rear end cover respectively at the two ends of shell, first dividing plate and second partition are by the internal layout of shell, vent is respectively equipped with in the both sides of described first dividing plate, intervalve is interspersed with respectively in the upper and lower of the first dividing plate and second partition, the one end open of described intervalve, the other end is closed, air inlet diffusing tube is located at the enclosure between front cover and the first dividing plate, the one end open of described air inlet diffusing tube, the other end is closed, diffusing tube of giving vent to anger longitudinally is located between rear end cover and second partition, one end of described diffusing tube of giving vent to anger is closed, the other end opening.On the outer wall of described diffusing tube of giving vent to anger, cover has steam outlet pipe sleeve pipe, between steam outlet pipe sleeve pipe and the inwall of diffusing tube of giving vent to anger, be provided with sound absorbing material.
By above setting, the utility model maintains the effective advantage of resistance exhaust silencer centering, low frequency silencing noise, and air-flow is by repeatedly turning to and the repeatedly noise elimination of vent to high frequency and the sound absorption of sound-absorbing material, engine supercharger whistle is well eliminated, in actual entrucking uses, obtain good effect.
Accompanying drawing explanation
Now by reference to the accompanying drawings the utility model is described further.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
In figure: 1, shell, 2, front cover, 3, rear end cover, the 4, first dividing plate, 5, second partition, 6, vent, 7, intervalve, 8, air inlet diffusing tube, 9, diffusing tube of giving vent to anger, 10, steam outlet pipe sleeve pipe, 11, sound absorbing material.
Embodiment
As Fig. 1, shown in 2, the utility model is occluding with front cover 2 and rear end cover 3 respectively at the two ends of shell 1, first dividing plate 4 and second partition 5 are by the internal layout of shell 1, vent 6 is respectively equipped with in the both sides of described first dividing plate 4, intervalve 7 is interspersed with respectively in the upper and lower of the first dividing plate 4 and second partition 5, the one end open of described intervalve 7, the other end is closed, the shell 1 that air inlet diffusing tube 8 is located between front cover 2 and the first dividing plate 4 is inner, the one end open of described air inlet diffusing tube 8, the other end is closed, diffusing tube 9 of giving vent to anger longitudinally is located between rear end cover 3 and second partition 5, one end of described diffusing tube 9 of giving vent to anger is closed, the other end opening.On the outer wall of described diffusing tube 9 of giving vent to anger, cover has steam outlet pipe sleeve pipe 10, between steam outlet pipe sleeve pipe 10 and the inwall of diffusing tube 9 of giving vent to anger, be provided with sound absorbing material 11.
By above setting, the noise of discharging from light-duty digger engine enters in the shell 1 between front cover 2 and the first dividing plate 4 through air inlet diffusing tube 8 of the present utility model, realize one-level expansion, eliminate the basic, normal, high audio-frequency noise of part, the transformation in noise direction simultaneously, and the vibration friction of mesh on air inlet diffusing tube 8, eliminate part high-frequency noise.Noise enters between the first dividing plate 4 and second partition 5 at the vent 6 of the both sides from the first dividing plate 4, realize second level expansion, elimination part is low, in, high-frequency noise, simultaneously due to noise enter intervalve 7 time, by the mesh vibration friction on intervalve 7, eliminate part high-frequency noise, noise enters between rear end cover 3 and second partition 5 by intervalve 7 again, realize three grades of expansions, elimination part is low, in, high-frequency noise, due to the mesh vibration friction by diffusing tube 9 outer wall of giving vent to anger, eliminate part high-frequency noise again, simultaneously because the sound absorption of the sound-absorbing material 11 between diffusing tube 9 and steam outlet pipe sleeve pipe 10 of giving vent to anger turn eliminates part high-frequency noise.

Claims (2)

1. a light-duty excavator silencing apparatus, it is characterized in that: be occluding with front cover and rear end cover respectively at the two ends of shell, first dividing plate and second partition are by the internal layout of shell, vent is respectively equipped with in the both sides of described first dividing plate, intervalve is interspersed with respectively in the upper and lower of the first dividing plate and second partition, the one end open of described intervalve, the other end is closed, air inlet diffusing tube is located at the enclosure between front cover and the first dividing plate, the one end open of described air inlet diffusing tube, the other end is closed, diffusing tube of giving vent to anger longitudinally is located between rear end cover and second partition, one end of described diffusing tube of giving vent to anger is closed, the other end opening.
2. the light-duty excavator silencing apparatus of one according to claim 1, is characterized in that: on the outer wall of described diffusing tube of giving vent to anger, cover has steam outlet pipe sleeve pipe, between steam outlet pipe sleeve pipe and the inwall of diffusing tube of giving vent to anger, be provided with sound absorbing material.
CN201420585050.6U 2014-10-11 2014-10-11 A kind of light-duty excavator silencing apparatus Expired - Fee Related CN204175383U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420585050.6U CN204175383U (en) 2014-10-11 2014-10-11 A kind of light-duty excavator silencing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420585050.6U CN204175383U (en) 2014-10-11 2014-10-11 A kind of light-duty excavator silencing apparatus

Publications (1)

Publication Number Publication Date
CN204175383U true CN204175383U (en) 2015-02-25

Family

ID=52564200

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420585050.6U Expired - Fee Related CN204175383U (en) 2014-10-11 2014-10-11 A kind of light-duty excavator silencing apparatus

Country Status (1)

Country Link
CN (1) CN204175383U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112327734A (en) * 2020-10-29 2021-02-05 工业互联网创新中心(上海)有限公司 Engineering machine tool remote monitering system based on internet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112327734A (en) * 2020-10-29 2021-02-05 工业互联网创新中心(上海)有限公司 Engineering machine tool remote monitering system based on internet
CN112327734B (en) * 2020-10-29 2021-06-29 工业互联网创新中心(上海)有限公司 Engineering machine tool remote monitering system based on internet

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150225

Termination date: 20171011

CF01 Termination of patent right due to non-payment of annual fee