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A Method for Reducing Mechanical Noise of Locomotive Blower Fan

A technology of blower and blower, applied in mechanical equipment, machine/engine, components of pumping device for elastic fluid, etc. problems, to achieve the effect of reducing radial shaking, reducing mechanical noise, and improving maintenance capabilities

Active Publication Date: 2021-04-13
CRRC LUOYANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems in the above-mentioned prior art, and to provide a method for reducing the mechanical noise of the locomotive blower fan. The present invention is scientific and reasonable, and the steps are simple; To disassemble, first use the special tooling to remove the coil on the rotor of the air blower, and then disassemble the bearing by disassembling the special tooling on the bearing on the rotor, replace it or add lubricating grease, and completely solve the increase in the clearance of the rotor bearing of the air blower. Large, the radial vibration of the rotor is serious, causing the problem of high mechanical noise during the operation of the fan

Method used

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  • A Method for Reducing Mechanical Noise of Locomotive Blower Fan
  • A Method for Reducing Mechanical Noise of Locomotive Blower Fan

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Step 1. Disassembly of the rotor coil of the air supply fan: use a wrench to disassemble the plum blossom screwdriver on the outer cover of the air supply fan, and use the special tool for disassembling the rotor coil to remove the coil of the air supply fan; when using the special tool for disassembling the rotor coil , keep the force uniform, and prevent scratches on the surface of the rotor during the process of disassembling the coil and bearing;

[0026] Step 2. Disassembly of the rotor bearing of the blower fan: After the coil of the blower fan is removed in step 1, use the special tool for removing the rotor bearing to remove the upper bearing of the blower fan rotor; when using the special tool for removing the rotor bearing, keep Use uniform force to prevent scratches on the surface of the rotor during disassembly of the coil and bearing;

[0027] Step 3. Bearing replacement or oil filling: Use a measuring tool to measure whether the bearing clearance has incre...

Embodiment 2

[0031] Step 1. Disassembly of the rotor coil of the air supply fan: use a wrench to disassemble the plum blossom screwdriver on the outer cover of the air supply fan, and use the special tool for disassembling the rotor coil to remove the coil of the air supply fan; when using the special tool for disassembling the rotor coil , keep the force uniform, and prevent scratches on the surface of the rotor during the process of disassembling the coil and bearing;

[0032] Step 2. Disassembly of the rotor bearing of the blower fan: After the coil of the blower fan is removed in step 1, use the special tool for removing the rotor bearing to remove the upper bearing of the blower fan rotor; when using the special tool for removing the rotor bearing, keep Use uniform force to prevent scratches on the surface of the rotor during disassembly of the coil and bearing;

[0033] Step 3. Bearing replacement or oil filling: Use a measuring tool to measure whether the bearing clearance has incre...

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Abstract

The invention relates to the technical field of noise reduction of the mechanical noise of the locomotive blower fan. The invention discloses a method for reducing the mechanical noise of the locomotive blower fan. Step 1, dismantling the rotor coil of the blower fan; 1. Bearing replacement or oil filling; step 4, grinding treatment of the rotor surface of the air supply fan; step 5, assembly of the air supply fan coil, rotor and bearing. The method for reducing the mechanical noise of the locomotive air supply fan reduces the mechanical noise of the air supply fan by 25dB, reduces the radial shaking of the air supply fan rotor, improves the service life of the air supply fan, and rapidly increases the inspection pass rate of the air supply fan to 80%. .

Description

technical field [0001] The invention relates to the technical field of reducing the mechanical noise of a locomotive fan, in particular to a method for reducing the mechanical noise of a locomotive fan. Background technique [0002] The air supply fan of HXD1 locomotive is a confirmed inspection part. During the repair test of C6, after the air conditioner is started and running, the failure of the air supply fan is often loud, and the air supply fan needs to be reworked and replaced. During the locomotive test, all parts of the driver's cab have been installed in place, and the removal and installation of the air supply fan requires the removal of related equipment, and the amount of rework is huge. [0003] In the prior art, the causes of high noise of the air supply fan during operation are nothing more than electrodynamic noise, mechanical noise of the fan and wind noise. Aiming at the problem of high noise during the operation of the air supply fan, it is determined th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66F04D29/60
CPCF04D29/601F04D29/661
Inventor 李奇张胜有杨晓梅王建斌
Owner CRRC LUOYANG CO LTD
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