CN215109081U

CN215109081U - Silencer for overhead working truck

Info

Publication number: CN215109081U
Application number: CN202121461480.3U
Authority: CN
Inventors: 沈先明; 武子静; 王伟; 袁学红; 万朝升; 王彬
Original assignee: Hefei Hean Machinery Manufacturing Co Ltd
Current assignee: Hefei Hean Machinery Manufacturing Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-12-10
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a silencer for high altitude construction car, including the muffler pipe, be equipped with the baffle at the inside middle part of muffler pipe, the equipartition has a plurality of noise elimination holes on the muffler pipe the outside cover of muffler pipe has the barrel, all is equipped with end cover between the both ends of barrel and muffler pipe, a plurality of noise elimination holes all are located between the end cover of both ends. The utility model discloses silencer after the improvement, wherein low frequency noise effect is better than resistance silencer effect, and its exhaust resistance accords with the customer requirement, simultaneously, compares and adopts resistance material, and resistance silencer's whole cost of manufacture is lower, and economic nature is better.

Description

Silencer for overhead working truck

Technical Field

The utility model relates to a silencer technical field especially relates to a silencer for high altitude construction car.

Background

The existing small-tonnage silencer used on an overhead working truck has limited space and simple and convenient structure, and the silencer of an internal combustion truck adopts the following design mode, namely a design scheme of a small-hole resistive silencer. The resistive muffler has better feedback on high-frequency noise, but the low-and-medium-frequency noise is poorer, the shorter the pipeline of the resistive muffler is, the poorer the muffling effect is, the exhaust muffler is limited in space size and is not properly designed into a muffler with a longer size in the vicinity of an internal combustion engine of an overhead working truck, so that the high-frequency muffling effect is greatly reduced, the actual using effect is unsatisfactory, and the cost of a single muffler is higher. The exhaust resistance value is smaller, the high-frequency noise elimination effect is better, but the cost is higher, the low-frequency noise elimination effect is poorer, and because under most conditions, the working condition low-frequency noise feedback is more obvious, and the scheme of resistive design does not meet the expectations of customers.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a silencer for high altitude construction vehicle in order to remedy the defects of the prior art. Aiming at low-frequency noise, a muffler with a reactive structure is mainly applied, in addition, aiming at the type of ascending vehicle or high-altitude operation vehicle, the exhaust resistance of the muffler relates to the fuel economy performance of the ascending vehicle or high-altitude operation vehicle, the requirement on the exhaust resistance value of the exhaust is generally required to be low, according to the requirement, the reactive muffler structure applied to the high-altitude operation vehicle is designed, and the requirement of a client can be met.

The utility model discloses a realize through following technical scheme:

a silencer for an overhead working truck comprises a silencing pipe, a baffle is arranged in the middle of the interior of the silencing pipe, a plurality of silencing holes are uniformly distributed in the silencing pipe, the left part and the right part of the silencing pipe are designed symmetrically, a barrel body is sleeved on the outer side of the silencing pipe, sealing end covers are arranged between two ends of the barrel body and the silencing pipe, and the silencing holes are located between the sealing end covers at the two ends.

The air inlet end of the silencing pipe is connected with an air inlet pipe, the air inlet pipe is an arc-shaped pipe, a supporting rod is arranged at the end part, close to the air outlet end of the silencing pipe, of the outer side of the barrel, and the other end of the supporting rod is fixedly connected with the outside of an air inlet of the air inlet pipe. The air flow enters the silencing pipe from the air inlet pipe, and the support rod is used for supporting the silencing pipe and the air inlet pipe.

And a fixing plate is fixed outside the air inlet end of the silencing pipe, and a fixing hole is formed in the fixing plate. For fixing the muffler.

The cross-sectional area of the small hole of the inner pipe of the silencing pipe is smaller than the cross-sectional area of the pipe diameter of the air inlet pipe, so that the resistance is increased, and the silencing effect is better.

The utility model discloses a muffler pipe forms the resonant cavity with the barrel, the air current gets into behind the muffler pipe, move forward along the muffler pipe, because there is the baffle muffler intraduct, the air current is from the downthehole resonant cavity that flows out of the noise elimination that is located baffle the place ahead, it is intraductal from the downthehole noise elimination that flows in of the noise elimination that is located the baffle rear again, the end of giving vent to anger from the muffler pipe flows, the resistance silencer is the sudden change department of production through the pipeline cross-section or other change that arouses impedance in the acoustic propagation in-process and produce the reflection of sound energy, interfere, thereby reduce the sound energy by silencer external radiation, in order to reach the silencer of noise elimination purpose.

The utility model has the advantages that: the utility model discloses silencer after the improvement, wherein low frequency noise effect is better than resistance silencer effect, and its exhaust resistance accords with the customer requirement, simultaneously, compares and adopts resistance material, and resistance silencer's whole cost of manufacture is lower, and economic nature is better.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1, the muffler for the aerial work vehicle comprises a muffling pipe 1, wherein a baffle 2 is arranged in the middle of the interior of the muffling pipe 1, a plurality of muffling holes 3 are uniformly distributed on the muffling pipe 1, the left part and the right part of the muffling pipe 1 are designed symmetrically, a cylinder body 4 is sleeved outside the muffling pipe 1, sealing end covers 5 are arranged between two ends of the cylinder body 4 and the muffling pipe 1, and the muffling holes 3 are located between the sealing end covers 5 at the two ends.

The air inlet end of the muffling tube 1 is connected with an air inlet tube 6, the air inlet tube 6 is an arc-shaped tube, a support rod 7 is arranged at the end part, close to the air outlet end of the muffling tube 1, of the outer side of the barrel 4, and the other end of the support rod 7 is fixedly connected with the outer portion of an air inlet of the air inlet tube 6. The air flow enters the silencing pipe 1 from the air inlet pipe 6, and the support rod 7 is used for supporting the silencing pipe 1 and the air inlet pipe 6.

A fixing plate 8 is fixed outside the air inlet end of the silencing tube 1, and a fixing hole 9 is formed in the fixing plate 8. For fixing the muffler.

The sectional area of the small hole of the inner pipe of the silencing pipe 1 is smaller than the sectional area of the pipe diameter of the air inlet pipe 6, so that the resistance is increased, and the silencing effect is better.

Claims

1. The utility model provides a silencer for high altitude construction car which characterized in that: the silencer comprises a silencer tube, wherein a baffle is arranged in the middle of the interior of the silencer tube, a plurality of silencing holes are uniformly distributed on the silencer tube, a cylinder body is sleeved on the outer side of the silencer tube, sealing end covers are arranged between two ends of the cylinder body and the silencer tube, and the silencing holes are located between the sealing end covers at the two ends.

2. The muffler for the aerial work platform as claimed in claim 1, wherein: the air inlet end of the silencing pipe is connected with an air inlet pipe, the air inlet pipe is an arc-shaped pipe, a supporting rod is arranged at the end part, close to the air outlet end of the silencing pipe, of the outer side of the barrel, and the other end of the supporting rod is fixedly connected with the outside of an air inlet of the air inlet pipe.

3. The muffler for the aerial work platform as claimed in claim 1, wherein: and a fixing plate is fixed outside the air inlet end of the silencing pipe, and a fixing hole is formed in the fixing plate.

4. The muffler for the aerial work platform as claimed in claim 1, wherein: the cross-sectional area of the inner pipe small hole of the silencing pipe is smaller than the pipe diameter cross-sectional area of the air inlet pipe.